Overhead connectors

THO Air - Overhead disconnector with a dry air insulation enclosure

The THO Air enclosed overhead disconnector is a modern device used mainly in advanced smart grids, SPZ automation and modern automation systems, e.g. FDiR.

Extensive experience in the production of switching equipment from scratch, hundreds of projects and the implementation of new technologies and design solutions have enabled us to create an overhead disconnector with a dry air insulation enclosure.

This disconnector directly replaces the previous THO-24 and THO 2-24 generation disconnectors, while maintaining high electrical parameters and the existing capabilities of comprehensive parameter monitoring and overhead line protection.

Characteristics

Construction

The innovative design of the disconnector is enclosed in a sealed stainless steel tank with IP67 protection rating in dry air insulation. This guarantees stable operating conditions and allows for high electrical parameters and excellent switching capacity. In addition, the enclosed design eliminates the need for maintenance or adjustment of the disconnector assemblies.
The disconnector uses resin bushings covered with silicone rubber, adapted for operation in dry air insulation. The solution has excellent hydrophobic properties and an appropriate creepage distance for 24kV voltage and the highest pollution zone.
The disconnect switch has a specially designed safety valve located at the top of the device. It protects the sealed tank against excessive pressure build-up inside, and its location at the top of the tank ensures safe operation.
The disconnect switch is always equipped with a pressure gauge to verify the dry air pressure level before performing the connection operation. It is also equipped with a pressure switch as standard, which transmits the pressure status to the telemechanics controller.
The motor drive is directly coupled to the main working shaft and forms an integral part of the disconnector. Switching on and off is performed simultaneously for all three poles by means of a single common shaft. This eliminates the possibility of interference and reduces the possibility of incorrect signalling and manoeuvres.
In addition, the disconnector is usually equipped with current sensors (transformers or Rogowski coils) and voltage sensors (capacitive or resistive), which allows for automatic operation in automatic networks, ensuring comprehensive protection of overhead lines, full control of their parameters and quick location of short circuits or damage.

Engine drive

The disconnector equipped with a motor drive is mainly designed for remote control. It is also possible to operate the motor drive locally. The motor drive performs the ‘on’ and ‘off’ operations in less than 1.2 seconds.

Engine drive

The disconnector is always equipped with an emergency manual drive with a clutch. This type of solution guarantees smooth operation of the motor drive without unnecessary engagement of the manual drive cables. The manual drive is connected to the motor drive in only one place, which prevents incorrect manoeuvres. The coupling is also signalled to the controller, as a result of which this information is also sent to the network monitoring system and at the same time acts as an assembly lock.

The drive also has the option of fitting a standard padlock in any position.

Control cable

The disconnector is equipped with a dedicated control cable adjusted in length to the height of the disconnector installation at the target location.
The cable on the disconnector side is permanently factory-terminated, while on the cabinet side, the cable is terminated with marked plug connectors ready for connection.
This solution prevents incorrect connection of the device.

Fastening structure

The disconnector can be mounted on pole stations made of both spun poles and older types of reinforced concrete poles BSW/ŻN or non-standard concrete or steel lattice poles.

There is also a special design where a disconnector with an auxiliary transformer and surge arresters are mounted on a single common structure.

Safety valve

The disconnect switch has a specially designed safety valve located at the top of the tank. It protects the sealed tank against excessive pressure build-up inside.

Additional equipment

Pressure gauge

A pressure gauge with temperature compensation is standard equipment.

It is built into the drive compartment of the disconnector and is clearly visible from ground level.

The indicator has a scale divided into two zones:

GREEN ZONE (correct level), where the indicator is located under normal conditions (it takes into account the effect of temperature on pressure changes inside the tank)
RED ZONE, where the indicator signals a reduced state (emergency state in which disconnection operations cannot be performed).

Counter of completed operations

The meter is standard equipment.

It indicates the number of manoeuvres performed by the switch.

It is built into the drive compartment of the disconnector, visible from below.

Dedicated current clamps and bird-proof insulation covers

Dedicated clamps and covers are standard equipment.

They enable endless connection of overhead cables up to 185 mm², and the covers ensure insulation of the connection.

Pressure sensor (pressure switch) for telemechanics

The sensor signals a failure when the internal pressure drops to a level that prevents the disconnector from functioning properly. This also blocks switching operations.

THO Air circuit breaker parameters

Compliance with reference standards:

PN-EN 62271-103:2024-04 - High-voltage switchgear and controlgear - Part 103: Disconnectors with a rated voltage higher than 1 kV up to and including 52 kV.
PN-EN IEC 62271-102:2018-10 - High-voltage switchgear and controlgear - Part 102: AC disconnectors and earthing switches.
PN-EN 62271-1:2018-02 - High-voltage switchgear and controlgear - Part 1: Common provisions for AC switchgear and controlgear.
PN-EN IEC 62271-200:2022-02 - point 6.106 i zał. AA - arc flash tests.
PN-EN 60529:2003 - Degrees of protection provided by enclosures (IP code).
PN-EN IEC 62271-4:2023-04 - High-voltage switchgear and controlgear - Part 4: Procedures for handling gases used for insulation and/or switching operations.
PN-EN 61140:2016-07 - Protection against electric shock. Common aspects of installations and equipment.

Disconnector parameters
Type	THO Air
Rated voltage U_r	24(25)kV
Rated frequency - number of phases f_r	50 Hz - 3
Rated withstand voltage at mains frequency - dry and wet conditions - 1 min. U_d
- to ground and interphase	50kV
- safe insulation gap	60kV
Rated lightning impulse withstand voltage 1.2/50msj U_p
- to ground and phase-to-phase	125kV
- safe insulation gap	145kV
Rated continuous current I_r	630A
Short-time rated current I_k	20kA(1s)
Rated peak current withstand I_p	50kA
Rated short-circuit inrush current I_ma	50kA
Rated breaking current in a low-inductance circuit I_load	630A
Rated breaking current in a ring circuit I_loop	630A
Mechanical durability (cycle understood as opening and closing)	(M2) 5000
Operating temperature	- 40°C + 60°C
Electrical durability class of the disconnector	(E3) 100 C-O
Electrical durability class of the earthing switch	E2

Current sensor parameters

Parameters of PR-0.72 current transformers

The ring-shaped devices placed on the bushing insulators of the disconnector are connected in a Holmgreen configuration.
They are used to obtain information about earth fault currents and phase-to-phase currents, as well as to measure current as needed.

Rated primary voltage U_pr	0,66 kV
Maximum permissible voltage of the transformer U_m	0,72 kV
Rated frequency f_r	50 Hz
Rated secondary current I_pr (Scope)	50 A up to 600 A
Rated secondary current I_sr	1 A or 5 A
Power	5 VA(10)*
Core parameters (Sr, kl., AFL)	5(15)VA; 5P; AFL-5

* Note! - Current transformers with other parameters are also available in special designs.

Parameters of PR-0.72 current transformers

Parameters of PR-0.72s type current sensors (Rogowski coils)

Rated primary voltage U_pr	0,66 kV
Maximum permissible voltage of the transformer U_m	0,72 kV
Rated frequency f_r	50 Hz
Rated secondary current I_pr (Scope)	0,5 - 2000 A
Sensitivity	1 mV/1 A or 5 mV/1 A*
Rated dynamic current I_dyn	5(15)VA; 5P; AFL-5
Accuracy	1%

Current sensors are installed on bushing insulators on the outflow side.

Voltage sensor parameters

Technical parameters of the capacitive voltage sensor

Voltage sensors built into the bushing insulators of the disconnector on the supply side.

Rated primary voltage	15/√3, 20/√3*
Maximum permissible voltage of the divider	24 kV
Rated insulation test voltage	55 kV
Lightning impulse withstand voltage 1.2/50μs	125 kV
Capacitance of the upper capacitor built into the insulator	21 pF
Capacitance of the lower capacitor in the amplifier	200 nF / 267 nF*
Rated load	≥200 kΩ
Rated secondary voltage	3,25/√3 V*
Measurement accuracy after taking into account correction factors for voltage amplitude, class	3P (1P)*
System operating temperature	-40°C + 60°C

Technical parameters of the capacitive voltage sensor

Appearance and dimensions

Description of equipment

Description of the equipment of an overhead disconnector with a closed structure in dry air insulation

Table of symbols

Table of designations for overhead disconnectors with a dry air insulation enclosure

For example:

THO Air C-D Disconnector - means an overhead switch with a closed structure, dry air insulation for 24kV voltage, with a motor drive, Rogowski coils for current measurement and voltage sensors for presence control/voltage measurement.

THO/T Air P-D Disconnector - means an overhead switchgear of closed construction, insulated with dry air for a voltage of 24kV, with an earthing switch, motor drive, current measuring transformers and voltage sensors for presence control/voltage measurement.

THO Air disconnect switch, manual operation - means an overhead disconnector of closed construction, dry air insulated, rated for 24kV, suitable for manual control, with the option of retrofitting a motor drive.

THO/T Air disconnect switch, manual operation - means an overhead disconnector of closed construction, dry air insulated, with an earthing switch, rated for 24kV, suitable for manual control, with the option of retrofitting a motor drive.

Network partitioning options

Options for sectioning overhead switchgear networks with a closed dry air insulation structure

Object cabinet

SO type control cabinets (object cabinets) are designed for comprehensive operation of THO type remotely controlled disconnectors manufactured by ZPUE.
The cabinet housing is made of powder-coated aluminium sheet (stainless steel housing is also available). The cabinet doors are equipped with a Master-Key lock with the option of adding a padlock and a lock to prevent accidental closure. The enclosure features a special drainage system that prevents dirt from getting inside. The enclosures are thermally insulated as standard.
Metal glands are installed in the bottom of the object cabinet through which all necessary cables (control, antenna, power supply, etc.) are fed. The glands are selected according to the needs of a given investment.
The object cabinets provide space for the installation of commercially available telemechanics controllers and communication modems from any manufacturer that integrate the following functions: measurement, protection, motor drive control, telemechanics, automation and multi-channel disturbance recorder, as well as for collecting and processing information about network parameters and events. They ensure proper communication with the SCADA system.
In addition to the telemechanics system, cabinets of this type are usually equipped with a 230VAC service socket, internal LED lighting, and automatic heating and exhaust fan. They can also be fitted with devices such as radio modems for the TETRA system, industrial switches, fibre optic equipment, etc.
The exact electrical diagram and device layout depend on the standards of the relevant power company or the customer's guidelines.
The standard colour of the aluminium enclosure coating is RAL 7035. The colour can be changed to any colour as required. We can also design and manufacture control cabinets for other disconnectors or devices according to customer specifications. Please contact us with your individual enquiry.

Choosing a wardrobe – table of symbols

Cabinet selection – table of designations for overhead disconnectors with a closed structure in dry air insulation

SO1-THO-Air-P-D-B - Cabinet for controlling one THO Air circuit breaker with drive lockout signalling, current transformers and voltage dividers. Telemechanics controller manufactured by Mikronika.

SO5-THO-Air-P-D-B - Cabinet for controlling one THO Air circuit breaker with drive lockout signalling, current transformers and voltage dividers. Telemechanics controller manufactured by Apator Elkomtech.

SO1-2xTHO-Air-C-D - Cabinet for controlling two THO Air disconnectors, Rogowski coils and voltage dividers. Telemechanics controller manufactured by Mikronika.

SO2-THO-Air - A small cabinet containing only the control circuits of a THO Air type disconnector. Used when the telemechanics controller is located in a separate cabinet.

SO6-THO-Air-P-D-B - Cabinet for controlling one THO Air circuit breaker with drive lockout signalling, current transformers and voltage dividers. IEN Gdańsk telemechanics controller or equivalent from another manufacturer.

Compliance with standards

PN-EN 62271-1:2018-02 - High-voltage switchgear and controlgear - Part 1: Common provisions for alternating current switchgear and controlgear
PN-EN IEC 61439-1:2021-10 - Low-voltage switchgear and controlgear assemblies - Part 1: General requirements
PN-EN 60439-5:2008 - Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies for power distribution in public networks
PN-EN ISO 1461:2023-02 - Zinc coatings applied to steel and cast iron products by immersion
PN-EN ISO 12944-2:2018-02 - Paints and varnishes – Protection of steel structures against corrosion by protective paint systems – Part 2: Classification of environments
PN-EN 60529:2003 - Degrees of protection provided by enclosures (IP code) and related standards
PN-EN 62262:2003 - Degrees of protection against external mechanical impacts provided by electrical equipment enclosures (IK code)
PN-EN 61140:2016-07 - Protection against electric shock – Common aspects of installations and equipment

Parameters

Parameters of object cabinets
Rated voltage of the AC power supply	230 VAC*
Rated voltage of internal circuits	24/12 VDC
Degree of protection	IP54**
Ambient temperature range	-40°C +60°C
Possibility of installing data transmission modules	GPRS/TETRA NET-MAN/TRUNKING
Degree of protection against external impacts	IK10
Weight	35-50kg***

* Can be manufactured for other supply voltages
** Other IP ratings available depending on customer requirements
*** Weight depends on equipment variant and number of connectors supported

Spun concrete poles and prefabricated fundaments

The pre-stressed high strength type E and EM concrete poles offered by ZPUE are the highest quality products, compliant with the standard PN-EN 12843:2008. Use of modern technology of concrete density by centrifugation method allows us to achieve a high level of density and a smooth surface, which guarantees the stability and bearing capacity of the spun concrete poles. Concrete compressive strength class minimum C40/50(C50/60) according to PN-EN206-1:2003.

Characteristics

design working life 50 years without the need for maintenance,
low water absorption <3,5%, good frost resistance, exposure class XC4, XF2 according to the PN-EN 206-1 norm: 2003, confirmed by accredited research body,
esthetic design, scratch resistance of the smooth surface,
limiting of the amount of land made unavailable for agricultural use
possibility to increase the span length, fewer number of poles along 1km of lines,
easy foundation in the ground,
application of one concrete pole instead of expanded spans.

Application:

supports for overhead and overhead-cable MV and LV power lines, telecommunication lines, train and tram lines,
various support constructions for general application.

Spun poles type E and EM have a Certificate of Factory Production Control 1487 CPD/112/ZKP/09

Technical parameters of the concrete pole type E and EM

Legend:

L - overall length of the concrete pole
dw - outside diameter of the apex
dp - outside diameter of the base

Concrete poles designation

Technical parameters of the concrete pole type E
Lp.	Concrete pole type	Strength [kN]	Repture force [kg]	Weight [kg]	Dimensions					Strength colour indication
					[m]			[mm]
					L	L₁	L₂	dp	dw
1	E 6,7/12	12	21,6	910	6,7	6,7	1,5	353	218
2	E 7,5/12	12	21,6	1055	7,5	6,7	1,5	330	218
3	E 8,2/4,3	4,3	7,7	990	8,2	6,7	1,5	353	218
4	E 8,2/6	6,0	10,8	990	8,2	6,6	1,6	341	218
5	E 8,2/10	10,0	18,0	1100	8,2	6,6	1,6	341	218
6	E 8,2/12	12,0	21,6	1150	8,2	6,6	1,6	341	218
7	E 8,2/15	15,0	27,0	1150	8,2	6,6	1,6	341	218
8	E 9/2,5	2,5	4,5	775	9,0	7,4	1,6	308	173
9	E 9/4,3	4,3	7,7	845	9,0	7,4	1,6	308	173
10	E 9/6c	6,0	10,8	845	9,0	7,4	1,6	308	173
11	E 9/6	6,0	10,8	1250	9,0	7,7	1,6	353	218
12	E 9/10	10,0	18,0	1300	9,0	7,2	1,8	353	218
13	E 9/12	12,0	21,6	1300	9,0	7,2	1,8	353	218
14	E 9/15	15,0	27,0	1380	9,0	7,2	1,8	353	218
15	E 9/20	20,0	36,0	1508	9,0	7,2	1,8	353	218
16	E 10,5/2,5	2,5	4,5	1100	10,5	8,7	1,8	330	173
17	E 10,5/4,3c	4,3	7,7	1100	10,5	8,5	2,0	330	173
18	E 10,5/4,3	4,3	7,7	1500	10,5	8,5	2,0	375	218
19	E 10,5/6c	6,0	10,8	1100	10,5	8,5	2,0	330	173
20	E 10,5/6	6,0	10,8	1500	10,5	8,5	2,0	375	218
21	E 10,5/10	10,0	18,0	1600	10,5	8,3	2,2	375	218
22	E 10,5/12	12,0	21,6	1650	10,5	8,3	2,2	375	218
23	E 10,5/15	15,0	27,0	1725	10,5	8,3	2,2	375	218
24	E 10,5/20	20,0	36,0	1878	10,5	8,3	2,2	375	218
25	E 12/2,5	2,5	4,5	1400	12,0	10,0	2,0	353	173
26	E 12/4,3c	4,3	7,7	1450	12,0	9,8	2,2	353	173
27	E 12/4,3	4,3	7,7	1800	12,0	9,8	2,2	398	218
28	E 12/6c	6,0	10,8	1450	12,0	9,8	2,2	353	173
29	E 12/6	6,0	10,8	1800	12,0	9,8	2,2	398	218
30	E 12/10	10,0	18,0	2000	12,0	9,5	2,5	398	218
31	E 12/12	12,0	21,6	2050	12,0	9,5	2,5	398	218
32	E 12/15c	15,0	27,0	2250	12,0	9,5	2,5	398	218
33	E 12/20	20,0	36,0	2306	12,0	9,5	2,5	398	218
34	E 13,5/2,5	2,5	4,5	1650	13,5	11,3	2,2	375	173
35	E 13,5/4,3c	4,3	7,7	1700	13,5	11,1	2,4	375	173
36	E 13,5/4,3	4,3	7,7	2050	13,5	11,1	2,4	420	218
37	E 13,5/6	6,0	10,8	2050	13,5	11,0	2,5	420	218
38	E 13,5/10	10,0	18,0	2500	13,5	10,8	2,7	420	218
39	E 13,5/12	12,0	21,6	2500	13,5	10,8	2,7	420	218
40	E 13,5/15	15,0	27,0	2500	13,5	10,8	2,7	420	218
41	E 15/2,5	2,5	4,5	1690	15,0	12,5	2,5	398	173
42	E 15/4,3c	4,3	7,7	1913	15,0	12,3	2,7	398	173
43	E 15/4,3	4,3	7,7	2500	15,0	12,3	2,7	443	218
44	E 15/6	6,0	10,8	2500	15,0	12,2	2,8	443	218
45	E 15/10	10,0	18,0	2900	15,0	12,0	3,0	443	218
46	E 15/12	12,0	21,6	3000	15,0	12,0	3,0	443	218
47	E 15/15	15,0	27,0	3000	15,0	12,0	3,0	443	218

Technical parameters of the concrete pole type EM
Lp.	Concrete pole type	Strength [kN]	Rupture force [kg]	Weight [kg]	Dimensions					Strength colour indication
					[m]			[mm]
					L	L₁	L₂	dp	dw
1	EM 10,5/15	15,0	27,0	1875	10,5	8,3	2,2	420	263
2	EM 10,5/17,5	17,5	31,5	1907	10,5	8,3	2,2	420	263
3	EM 10,5/20	20,0	36,0	1991	10,5	8,3	2,2	420	263
4	EM 10,5/25	25,0	45,0	2082	10,5	8,3	2,2	420	263
5	EM 12/15	15,0	27,0	2225	12,0	9,5	2,5	443	263
6	EM 12/17,5	17,5	31,5	2383	12,0	9,5	2,5	443	263
7	EM 12/20	20,0	36,0	2492	12,0	9,5	2,5	443	263
8	EM 12/25	25,0	45,0	2518	12,0	9,5	2,5	443	263
9	EM 13,5/15	15,0	27,0	2841	13,5	10,8	2,7	465	263
10	EM 13,5/17,5	17,5	31,5	2893	13,5	10,8	2,7	465	263
11	EM 13,5/20	20,0	36,0	3042	13,5	10,8	2,7	465	263
12	EM 13,5/25	25,0	45,0	3086	13,5	10,8	2,7	465	263
13	EM 15/15	15,0	27,0	3131	15,0	12,0	3,0	488	263
14	EM 15/17,5	17,5	31,5	3131	15,0	12,0	3,0	488	263
15	EM 15/20	20,0	36,0	3225	15,0	12,0	3,0	488	263
16	EM 15/25	25,0	45,0	3225	15,0	12,0	3,0	488	263

Concrete poles type E and EM

Technical parameters of the concrete pole type EU and EMU

Legenda:

L - overall length of the concrete pole
dw - outside diameter of the apex
dp - outside diameter of the base

Concrete pole designation

Technical parameters of the concrete pole type EU
Lp.	Concrete pole type	Strength [kN]	Rupture force [kg]	Weight [kg]	Dimensions					Strength colour indication
					[m]			[mm]
					L	L₁	L₂	dp	dw
1	EU 6,7/12	12	21,6	910	6,7	6,7	1,5	353	218
2	EU 7,5/12	12	21,6	1055	7,5	6,7	1,5	330	218
3	EU 8,2/4,3	4,3	7,7	990	8,2	6,7	1,5	353	218
4	EU 8,2/6	6,0	10,8	990	8,2	6,6	1,6	341	218
5	EU 8,2/10	10,0	18,0	1100	8,2	6,6	1,6	341	218
6	EU 8,2/12	12,0	21,6	1150	8,2	6,6	1,6	341	218
7	EU 8,2/15	15,0	27,0	1150	8,2	6,6	1,6	341	218
8	EU 9/2,5	2,5	4,5	775	9,0	7,4	1,6	308	173
9	EU 9/4,3	4,3	7,7	845	9,0	7,4	1,6	308	173
10	EU 9/6c	6,0	10,8	1250	9,0	7,4	1,6	308	173
11	EU 9/6	6,0	10,8	1250	9,0	7,7	1,6	353	218
12	EU 9/10	10,0	18,0	1300	9,0	7,2	1,8	353	218
13	EU 9/12	12,0	21,6	1300	9,0	7,2	1,8	353	218
14	EU 9/15	15,0	27,0	1380	9,0	7,2	1,8	353	218
15	EU 9/20	20,0	36,0	1508	9,0	7,2	1,8	353	218
16	EU 10,5/2,5	2,5	4,5	1100	10,5	8,7	1,8	330	173
17	EU 10,5/4,3c	4,3	7,7	1100	10,5	8,5	2,0	330	173
18	EU 10,5/4,3	4,3	7,7	1500	10,5	8,5	2,0	375	218
19	EU 10,5/6c	6,0	10,8	1100	10,5	8,5	2,0	330	173
20	EU 10,5/6	6,0	10,8	1500	10,5	8,5	2,0	375	218
21	EU 10,5/10	10,0	18,0	1600	10,5	8,3	2,2	375	218
22	EU 10,5/12	12,0	21,6	1650	10,5	8,3	2,2	375	218
23	EU 10,5/15	15,0	27,0	1725	10,5	8,3	2,2	375	218
24	EU 10,5/20	20,0	36,0	1878	10,5	8,3	2,2	375	218
25	EU 12/2,5	2,5	4,5	1400	12,0	10,0	2,0	353	173
26	EU 12/4,3c	4,3	7,7	1450	12,0	9,8	2,2	353	173
27	EU 12/4,3	4,3	7,7	1800	12,0	9,8	2,2	398	218
28	EU 12/6c	6,0	10,8	1450	12,0	9,8	2,2	353	173
29	EU 12/6	6,0	10,8	1800	12,0	9,8	2,2	398	218
30	EU 12/10	10,0	18,0	2000	12,0	9,5	2,5	398	218
31	EU 12/12	12,0	21,6	2050	12,0	9,5	2,5	398	218
32	EU 12/15c	15,0	27,0	2250	12,0	9,5	2,5	398	218
33	EU 12/20	20,0	36,0	2306	12,0	9,5	2,5	398	218
34	EU 13,5/2,5	2,5	4,5	1650	13,5	11,3	2,2	375	173
35	EU 13,5/4,3c	4,3	7,7	1700	13,5	11,1	2,4	375	173
36	EU 13,5/4,3	4,3	7,7	2050	13,5	11,1	2,4	420	218
37	EU 13,5/6	6,0	10,8	2050	13,5	11,0	2,5	420	218
38	EU 13,5/10	10,0	18,0	2500	13,5	10,8	2,7	420	218
39	EU 13,5/12	12,0	21,6	2500	13,5	10,8	2,7	420	218
40	EU 13,5/15	13,5	27,0	2500	13,5	10,8	2,7	420	218
41	EU 15/2,5	2,5	4,5	1690	15,0	12,5	2,5	398	173
42	EU 15/4,3c	4,3	7,7	2500	15,0	12,3	2,7	398	173
43	EU 15/4,3	4,3	7,7	2500	15,0	12,3	2,7	443	218
44	EU 15/6	6,0	10,8	2500	15,0	12,2	2,8	443	218
45	EU 15/10	10,0	18,0	2900	15,0	12,0	3,0	443	218
46	EU 15/12	12,0	21,6	3000	15,0	12,0	3,0	443	218
47	EU 15/15	15,0	27,0	3000	15,0	12,0	3,0	443	218

Technical parameters of the concrete pole type EMU
Lp.	Concrete pole type	Strength [kN]	Rupture force [kg]	Weight [kg]	Dimensions					Strength colour indication
					[m]			[mm]
					L	L₁	L₂	dp	dw
1	EMU 10,5/15	15,0	27,0	1875	10,5	8,3	2,2	420	263
2	EMU 10,5/17,5	17,5	31,5	1907	10,5	8,3	2,2	420	263
3	EMU 10,5/20	20,0	36,0	1991	10,5	8,3	2,2	420	263
4	EMU 10,5/25	25,0	45,0	2082	10,5	8,3	2,2	420	263
5	EMU 12/15	15,0	27,0	2225	12,0	9,5	2,5	443	263
6	EMU 12/17,5	17,5	31,5	2383	12,0	9,5	2,5	443	263
7	EMU 12/20	20,0	36,0	2492	12,0	9,5	2,5	443	263
8	EMU 12/25	25,0	45,0	2518	12,0	9,5	2,5	443	263
9	EMU 13,5/15	15,0	27,0	2841	13,5	10,8	2,7	465	263
10	EMU 13,5/17,5	17,5	31,5	2893	13,5	10,8	2,7	465	263
11	EMU 13,5/20	20,0	36,0	3042	13,5	10,8	2,7	465	263
12	EMU 13,5/25	25,0	45,0	3086	13,5	10,8	2,7	465	263
13	EMU 15/15	15,0	27,0	3131	15,0	12,0	3,0	488	263
14	EMU 15/17,5	17,5	31,5	3131	15,0	12,0	3,0	488	263
15	EMU 15/20	20,0	36,0	3225	15,0	12,0	3,0	488	263
16	EMU 15/25	25,0	45,0	3225	15,0	12,0	3,0	488	263

Concrete poles type EU and EMU

Prefabricated footing elements

Precast concrete is designed for concrete poles and transformer stations foundations in MV and LV overhead networks. Concrete prefabricated footing and fundament elements are made from concrete class C 30/35. Footing elements should be chosen based on PTPIREE albums and assessment of the ground parameters according to the regulations defined in PN-81/B-03020 and PN-80/B-03322 norms.

List of footings and fundaments
Lp.	Footing type	Type	Footing elements
1.	Footing plates	UP 1 ÷ 7	Plate U - 85 Plate U - 130 Alloyed plate 0,3 x 0,3 Bracket OU-1, OU-2, OU-6/VE
2.	Footing plates	UP 11 ÷ 18	Plate U - 85 Plate U - 130 Element ES-2 Alloyed plate 0,3 x 0,3
3.	Footing blocks	To the concrete pole ŻN i BSW	Block B - 60 Block B - 80 Block B - 90 Block B - 150
4.	Prefabricated fundaments	SFP 111, 122, 133 SFP 21/L, 22/L, 23/L SP 1, 2, 3 SP 11, 22, 33	Bottom plate PD Plate PS 120 Plate PS 160 Plate PS 200 Screw connections SFP 2 /L
5.	Prefabricated fundaments	FP 11, 12, 13 FP 21, 22, 23	Element EF Plate P - 120 Plate P - 160 Plate P - 200 Assembly bolts

Table footing elements
Element name	Symbol of the element	a [cm]	Element weight
Footing plate	P - 120	120	675 kg
	P - 160	160	900 kg
	P - 200	200	1125 kg
	Element sketch

	Symbol of the element	a [cm]	Element weight
	PS - 120	120	400 kg
	PS - 160	160	530 kg
	PS - 200	200	660 kg
	Element sketch

	Symbol of the element		Element weight
	U - 85		77 kg
	Element sketch

	Symbol of the element		Element weight
	U - 130		156 kg
	Element sketch

	Symbol of the element		Element weight
	Bottom plate PD		510 kg
	Element sketch

Element name	Symbol of the element		Element weight
Footing blocks	B - 60		23 kg
	Element sketch

	Symbol of the element		Element weight
	B - 80		38 kg
	Element sketch

	Symbol of the element		Element weight
	B - 90		72 kg
	Element sketch

	Symbol of the element		Element weight
	B - 150		120 kg
	Element sketch

Element name	Symbol of the element		Element weight
Footing elements	EF		1060 kg

Concrete poles and construction of the overhead power lines

Prefabricated functional spun concrete or wooden poles are delivered with previously installed constructions, elements of the overhead connectors’ drives, elements for lightning arresters installation, constructions for cable terminations, required groundings, warning plates, etc.

Connectors should be self assembled on the poles in the construction site in order to avoid damage to the elements during transfer and transport. Steel constructions are protected against corrosion by hot dip galvanizing according to the PN-EN ISO 1461 norm. All connecting elements used in the construction assembly, such as bolts and nuts, are protected against corrosion by hot dip galvanizing. The application of galvanizing for anti-corrosion protection has been eliminated because of its insufficient durability. Prefabricated concrete poles are made according to individual projects developed by ZPUE S.A and overhead power line albums adopted by the Polish Society of Transmission and Distribution of Electricity.

Implementation of the ZKP system in accordance with the EN 1090 norm

In accordance with Regulation (UE) 305/2011 of the European Parliament and of the Council of 9 March 2011 (Construction Products Regulation – CPR), ZPUE is pleased to inform our customers that the Factory Production Control System was introduced, fulfilling the requirements of the PN-EN 1090 norm within the range of production of low, medium and high voltage power constructions, and transformer stations.
ZPUE was also examined and found to be a company which performs welding works in “steel supporting constructions”.
To confirm the implementation, ZPUE has gained certificates from the notified and accredited body TUV NORD.

List of developments and albums

15-30 kV Overhead power lines with AFL-6 (35-70) cables on E spun concrete poles. Energoprojekt Poznań 1993 P-22505 volume 1-10 LSN/E

15-30 kV Overhead power lines with AFL-6 (35-70) cables on EPV spun concrete poles. Energoprojekt Poznań 1992 P-22529 volume 1-7 LSN/V

Medium voltage overhead power lines with AFL 35-70 cables on PTPIREE spun concrete poles, ELprojekt, Energolinia Poznań 1996 volume 1-8 LSN/P

15-20 kV Medium voltage overhead power lines with 70 (50) naked cables on spun concrete poles. Flat cable line. PTPIREE, Energolinia Poznań 2000 volume 1-8 LSN 50/E

Medium voltage overhead power lines with AFL 95-240 cables on spun concrete poles Energolinia Poznań 1998 EN-118 volume 1-2 LSN 240/E

Medium voltage overhead power lines with PAS 50-120 cables on spun concrete poles. Flat and vertical cable line. Energolinia Poznań 1998 EN-029 volume 1-6 LSN/PAS

15-20 kV Medium voltage overhead power lines with 35 (50), 70 (120) insulated cables on spun concrete poles. Vertical and flat cable line Elprojekt Poznań 1996 volume 1-16 LSNi

Medium and low voltage overhead insulated lines on wooden and spun concrete poles – dual-voltage PTPIREE power lines , Energolinia, Elprojekt Poznań 1996 volume 1-7 LSN/LNN

Medium voltage overhead power lines with AFL 35-70 naked cables on wooden poles. Triangular cable line. PTPIREE, Energolinia Poznań 2001 volume 1-3 LSNd

15-20 kV Medium voltage overhead power lines with semi-insulated cables with cross-sections 50-120mm2 in flat configuration on PTPIRE spun concrete poles, Elprojekt, Energolinia Poznań 2003 volume 1-8 LSNi 50- 120

15-20 kV Medium voltage overhead power lines with AFL 120(70) cables on spun concrete poles El- project Poznań 1994 volume 1-4 LSN 120/E Actualisation PTPIREE, El-project Poznań 1998 volume 1-4 LSN 120/E

Medium voltage overhead power lines on spun concrete poles. Metering points catalogue (accounting) AFL 35-70 Energolinia Poznań1997 EN-067 volume 1-2 LSN/PR

15-20 kV Medium voltage overhead power lines on spun concrete poles. Metering points album. PTPIREE, Energolinia Poznań 2008 LSN/PR

15-20 kV Medium voltage overhead power lines with 35 (50) and 70 mm2 naked cables on spun concrete poles with radio controlled switch disconnectors. PTPIREE, Elprojekt, Energolinia Poznań 2000 volume 1-3 LSN-os

15-20 kV Medium voltage overhead power lines with naked cables in triangular configuration on PTPIREE spun concrete poles, Energolinia Poznań 2002 volume 1-4 LSN 35(50)

Medium voltage double track lines with AFL 120 (70) cables on PTPIREE spun concrete poles, Elprojekt Poznań 1995 volume 1-3 LSN 2 x 120/E

Medium voltage overhead double track lines with semi-insulated 2x70-120mm2 cables in vertical configuration on PTPIREE spun concrete poles, Elprojekt Poznań 2004 volume 1-3 LSNi 2x70-120

15-20 kV Medium voltage overhead power lines with unisolated cables in flat configuration 70 and 50mm2 on single spun concrete poles type E and EM Energolinia Poznań 2007 EN-340 volume 1-3 LSN 70(50)

15-30 kV Medium voltage overhead power lines on E, EPV, ŻN, BSW spun concrete poles. Catalogue of the poles with THO (AFL 35 70)switch disconnectors Energolinia Poznań 1997 EN-097 volume 1 LSN/R

15-30 kV Medium voltage overhead power lines on ŻN, BSW concrete poles, E and EPV spun concrete poles, with unisolated and insulated cables.

15-30 kV Medium voltage overhead power lines with AFL-6 120, 240mm2 cables in flat and triangular configuration on spun concrete poles Energolinia Poznań EN-316 2010 volume 1-2 LSN 120, 240

Exemplary solutions for concrete poles with radio controlled connectors

Pole ROKe LSN 70(50) with switch disconnector THO

Pole ROPp-23(3r) LSN 70(50) with switch disconnector THO

Pole Or LSN 70(50) with recloser THO-RC27

Pole Oro LSN 70(50) with recloser THO-RC27 and disconnector ON III 24/4 P

Pole Op-12g(2r) LSN 70(50) with switch disconnector THO i RN

Pole RPKr LSN 70(50) with switch disconnector RN-100A

Pole O-6gr LSN 35(50) with switch disconnector RPN

Pole ROKp-22(3r) LSN 70(50) with switch disconnector 3xRPN

Exemplary solutions for concrete poles with manually controlled connectors

Pole Kp-21(2go) LSN 70(50)

Pole Og(2o) LSN 70(35)

Pole Op-21(2go) LSN 70(50)

Pole OMtg2r LSN 120-240

Pole Kb(2g0) LSNi 2x70(120)

Pole Ko(2g) LSN 70(50)

Pole ROKg(2o) LSN 25(50)

Pole ROKp-12go LSN 70(50)

Fuse bases are composed of the base main frame, MV bushing insulators and a fuse link.
PBNV-24, PBNV-30 overhead bases are designed for fixing WBGNp-17,5 and 24, OWBG-36 fuse links up to 25 A, as well as for connection with secured circuit in overhead switchgears, in particular in pole transformer substations up to 400 kVA.

PBNW-24 overhead fuse bases are designed for installation of pipe type fuses HH 24/....A, VVC/HH 24/....A up to 63 A, and to connect with a secured circuit in overhead switchgears, in particular in pole transformer substations with a transformer more than 400 kVA.

Technical parameters of the fuse bases

Compliance with standards:

Fuse bases comply with the latest PN-EN standards and have a certificate of conformity from the accredited body: the Institute of Electrical Engineering in Warsaw.

Technical parameters of the fuse bases
Rated voltage U_r	24 kV	36 kV
Isolation lightning impulse test voltage
- underground and inter-pole	125 kV	170 kV
- inter-terminal	145 kV	195 kV
Rated isolation altering test voltage
- underground and inter-pole	50 kV	70 kV
- inter-terminal	60 kV	80 kV
Rated frequency	50 Hz
Rated continuous current of the base	250A (depending on the value of the used link)
Rated continuous currents of the fuse links	PBNV-24 (from 2 to 25A) PBNW-24 (from 0,5 to 63A)
Rated interrupting current	6,3 kA
Link type	Up to PBNV-24 WBGNp-17,5 and 24, OWBG-36, Up to PBNW-24 HH 24.....A; VVC/HH 24.....A
Bushing insulator type	CH-4-125 ,ISWN	CH4-170

Designation

PBNV

Bushing insulator
Fuse link WBGN
Current terminal
Earthing terminal
Assembly element of the base
Main contacts of the base

PBNVo-24/D w I

Bushing insulator
Fuse link WBGN
Current terminal
Earthing terminal
Assembly element of the base
Main contacts of the base
Lightning arrester

PBNW-24

Bushing insulator
Fuse link HH
Current terminal
Earthing terminal
Assembly element of the base
Main contacts of the base

THO-RC27 automatic overhead circuit breaker Recloser consists of the switching unit of the THO-RC27 recloser and control unit SRC. Each switching unit pole has its own vacuum interrupter. All poles are mechanically coupled with a synchronizing shaft which guarantees simultaneous three-phase operation. Vacuum interrupters are opened and closed using a simple electromagnetic actuator with an effective operating lifespan of thirty thousand operations. The electromagnetic drive is actuated by the energy stored in the capacitors. It is composed of one movable part, which differentiates this electromagnetic drive from ordinary spring charged mechanisms. Vacuum interrupters and an electromagnetic drive are placed in completely sealed casing with an IP 65 protection degree.

The switching unit can be opened manually using a mechanical rod, actuating manual trip and lock out handle. After being opened manually, the circuit breaker is mechanically and electrically locked out. The circuit breaker position is mechanically indicated with a visual indicator placed at the bottom of the cubicle and electrically with the SRC control unit, which controls the position of the circuit breakers auxiliary contacts. External cover of the bushing insulators is made from water-repellent silicone rubber. Voltage measurement is performed by capacitive voltage dividers installed inside all bushing insulators. Current measurement is performed by installation of the external current transformers 1A secondary current or Rogowski coils on the bushing insulators.

The SRC control unit is designed for complex operation of Recloser THO-RC, incorporating digital protection with a function of SO-54SR- 1xx- REK bay controller and a communication module of any manufacturer, for example: Mikronika MSG- 6xx, Elkomtech EX- BRG, etc., which integrates the following functions: metering, protecting, controlling with a switching unit, telemechanics, automation and multi-channel fault recorder, as well as storing and processing information concerning network parameters and occurring events.

A detailed description of protection and communication modules is included in separate documentation depending on the type of the module used. ZUPE S.A. makes this documentation accessible after an enquiry is made.

Characteristics

possibility to install current transformers or Rogowski coils (depending on customer’s requirements), and very fast transformer or coil replacement, without the need to change the entire switching unit,
voltage meter from both sides using capacitive voltage dividers,
easy and very fast electromagnetic drive,
dry air solid isolation
possibility of manual opening and locking of the recloser without external power supply.

Recloser THO-RC27 parameters

Compliance with standards:

IEC 62271-111 - High Voltage Switchgear and Controlgear — Part 111: Automatic circuit reclosers and fault interrupters for alternating current systems up to 38 kV.
PN-EN 62271-1 - “High Voltage Switchgear and Control gear – Part 1: Common specifications”,
PN-EN 62271-100 - “High Voltage Switchgear and Control gear – Part 100: Alternating current circuit breakers”
PN-EN 61140:2005/A1 - Protection against electric shock. Common aspects for installation and equipment

Recloser THO-RC27 parameters
Rated voltage U_r	27kV
Rated frequency – number of phases f_r	50-60 Hz-3
Power insulation level withstand test frequency (underground/ interphase) - dry test (1 minute) 60/70 kV - wet test (10 s)	60/70kV 50/ 60kV
Rated lighting impulse withstand voltage 1,2 /50ms (underground/ interphase)	125/150kV
Rated continuous current I_r	630A
Rated short-time withstand current I_k	12,5kA
Rated peak current strength I_p	32,5kA
Rated short-circuit making current I_ma	31,5kA
Rated symmetrical interrupting current I_sc	12,5kA
Electrical life short-circuit interrupting at rated current	200
Mechanical durability (the process defined as closing and opening)	30000
Operation temperature	- 40°C + 55°C
Self-weight	100kg
Current metering	Current transformers or Rogowski coils
Voltage metering	6x voltage dividers

Control system parameters
Rated voltage of the altering current power suply	230 VAC
Rated voltage of the internal system power suply	24 VDC
Degree of protection	IP 54
Ambient temperature range	-40°C +55°C
Possibility to install transmission modules	GPRS/TETRA/NET-MAN/TRUNKING
Unladen maxx	40 kg

Recloser standards and have a certificate of conformity from the accredited body.

View, dimensions and construction of the switching unit

stainless-steel housing of the recloser
drive housing, under which is an electromagnetic drive
safety valve
lifting brackets
resin isolator with voltage divider installed inside, covered with silicone rubber
recloser interrupter installed inside the bushing isolator
main common shaft for all three poles
manual open and lock handle
fast electromagnetic drive
RX terminal strip
Rogowski coil or current transformer
MV cable connection
lifting bracket for recloser installation on the pole
visual position indicator

Dimensions and size

Schematic diagram

Wiew, dimensions and construction of the control unit

Control unit housing made from aluminum sheet, powder painted

controller protection SO-54SR-111-REK
capacitors
batteries
operating mode switch: remote, local, reclosing off
circuit breaker position indication
local control switches
live-line operation switch
automatic reclosing switch (automatic service restoration)
main protection 230 VAC with an arrester B + C and damage indication

Motor drives type NSP-7/SO-2 and NSP-8 manufactured by ZPUE are adapted for maneuvering with switch disconnectors from the RN and RPN groups with a rotating motion (in a place where hand drives have been applied), which functionality exceeds other solutions used in the power industry. Motor drive housings are made from powder-painted aluminum sheets (it is possible to order drives in housings made from stainless steel), drive series NSP-7/SO-2 (requires a separate plant/PLC controller installed in a separate control cabinet).

Drive series NSP-8 can be equipped with a telemechanics controller manufactured by Mikronika, Elkomtech, power supply to charge the batteries, batteries, short-circuits indicator. All drives manufactured by ZPUE S.A. cooperate with all dispatch systems: Wind-ex; Syndis; NetMan-Radius; SEN-CZAT.

Motor drives T1 and T2 are dedicated to only the THO series switch disconnectors. They were described in the subchapter “Switch disconnectors “sectionalizers” THO in closed casings for Smart Grid networks.

Compliance with standards

Compliance with standards:

PN-EN 61439-1:2011 - Low Voltage Switchgear and Control gear – Part 1: Common specifications,
PN-EN 60529:2003 - Degrees of protection provided by enclosures (IP code),
PN-EN 60439-5:2008 - Low Voltage Switchgear and Control gear – Part 5: Particular requirements for assemblies for power distribution in public networks,
PN-EN ISO 1461:2011 - Hot dip galvanized coatings on fabricated iron and steel articles,
PN-EN ISO 12944-2:2001P - Paints and Varnishes - Corrosion protection of steel structures through the use of painting methods – Part 2: environment classification,
PN-EN 60529: 2003 - Degrees of protection provided by casings (IP code) and related standards,
PN-EN 62262:2003 - Degrees of protection against mechanical damages provided by the casings of the electrical devices (IK code),
PN-EN 61140:2005/A1:2008 - Protection against electric shock - Common aspects for installation and equipment,
PN-EN ISO 12944-2:2001P - Paints and Varnishes - Corrosion protection of steel structures through the use of painting methods – Part 2: environment classification.

Types of motor drives

Types of motor drives
Drive type	T-1	T-2	NSP-7-SO2	NSP-8/ with telemechanics
Power supply voltage	24 V DC	24 V DC	24 V DC	230 V AC/ 24 V DC
Motor power	160 W	160 W	330 W	400 W
Start-up current consumption	6,8 A	6,8 A	9 A	20 A
Average time (*) of close / open switching operations	4-6 s	close 4-6/ switch off 0,1s	>2 s	>2 s
Drive weight	27 kg	27 kg	38,6 kg	65 kg

Motor drive NSP-7/SO-2

View from the SO-2 side

View from the drive side

Main shaft
Control cam
Limit circuit breaker
Gearmotor
Crank
Manual drive mechanical interlock
Manual drive slot interlock
Manual drive slot
Power supply protection
Housing door
Door opening indication
Drive casing
Control panel SO-2
Terminal strip with signals conduction
Control operation mode

Operating principle

NSP-7/SO-2 is an electric drive 24V DC equipped with a control panel SO-2.
The drive has a motor for 24 V DC voltage, single-step spur gear and electric control system SO-2. Switch disconnector maneuvering is performed when the main shaft drive is rotated to a 180° angle. The drive’s construction allows it to be handled from the ground level. The drive has a mechanical operation interlock, which protects against closing the drive during network operations.
A mechanical interlock allows permanent locking of the switch disconnector in the “OPEN” or “CLOSE” position. In order to lock the drive, the manual drive slot interlock (7) should be opened. Next insert the hand drive mechanical interlock (6) in such a way as to fit the interlock lugs with the cut out of the manual drive slot (8), then close the casing door (10).

Opening of the manual driver slot interlocks causes simultaneous switching off of the drive power supply thanks to the limit switch activation. Pulling out the mechanical interlock (6) from the manual drive slot (8) and closing the manual drive slot interlock (7) causes the release of the lock.

The switch disconnector can be maneuvered remotely or electrically from the control panel SO-2.
On the control cubicle panel are buttons:
"CLOSE" - send an impulse to close switch disconnector;
"OPEN” - send an impulse to open switch disconnector;
The control operation mode (15) is used to choose the way in which to control the switch disconnector:
1. REMOTE – remote control of the connector (radio control)
0. SWITCHED OFF – controlling deactivated
2. LOCAL - connector manoeuvring using buttons on the SO-2 control panel

Detailed information related to the drive is included in the DTR documentation.

Motor drive NSP-8 with telemechanics unit

Napędy silnikowe NSP-8 z układem telemechaniki

Main shaft of the drive
Espagnolette key to open panels
Manual drive crank
Drive casing
Door opening interlock
Terminal to ground the drive casing
Control panel SO-2
Place for installation of the mechanical interlock padlock
Manual drive slot
Local control buttons (Close / Open)
Control operation mode (Remote/ Deactivated/ Local)
Manual drive lever interlock
Manual drive interlock lever
Assembly board with the apparatus
Main overcurrent protection with the earthing switch disconnector Tytan (2A)
Ahort circuit indicator SZN-1 (option related to the controller type)
Temperature regulator
Espagnolette lock to open panels
Batteries
Heater
Gearmotor
Limit switches of the drive shaft position indication
Optical indicator of the shaft position (by the main shaft 1)
Electrical diagram
Rating plate
Drive power supply circuit breaker 24 V DC
Plant/PLC controller (depending on the manufacturer)
Place for radio installation
Lock with the padlock option

Operating principle

The NSP-8 drive is installed in powder-painted aluminum sheet casing with a thermal isolation (it can also be made from stainless steel sheet in a special order), it is additionally equipped with a lock Master Key type with the possibility of being locked with a padlock. The construction of the drive allows its operation from the ground level. The drive is fixed to the concrete pole in such a way so as to allow the combination of the main drive shaft NSP together with the switch disconnector drive crank. Rods, which join the switch disconnector with the NSP-8 drive are delivered as the drive’s equipment. The drive is equipped with a motor, single-step spur gear and electric control system.
Switch disconnector maneuvering is performed when the main shaft drive is rotated to a 180° angle.

For proper operation, the NSP-8 drive needs an external power supply of 230V from the auxiliary transformer mounted on a pole.
Moreover, the electric drive is equipped with a Plant/PLC controller manufactured by Mikronika, Elkomtech, Instytut Gdańsk, and can be additionally equipped with an underground and inter-phase short-circuit indicator, e.g. SZN-1, SZK-030/B or another type with specific dimensions.
The connection diagram of the NSP-8 drive with the controller, and a part of the assembly board are shown in the drive documentation DTR. Before performing the switching operations with the remote control or from the control panel, the operator must be familiar with the manual drive handling (in particular with the possibility of mechanical locking of the drive), which is described in detail in documentation DTR.
Switch disconnector maneuvering can be performed remotely or electrically from the control panel SO-2.
On the panel SO-2 of the control cubicle there are buttons (10):
"CLOSE” - send an impulse to close switch disconnector; "OPEN” – send an impulse to open switch disconnector;
The control operation mode (11) is used to choose the way in which to control the switch disconnector:
1. REMOTE – connector remote control (radio control)
0. SWITCHED OFF – controlling deactivated with no possibility of remote or local control
2. LOCAL - connector manoeuvring using buttons (10) on the SO-2 control panel

Detailed information related to the drive is included in documentation DTR.

Control cabinets series SO for remote supervision of the connectors in Smart Grid networks

Control cabinets „SO” are designed for comprehensive operation of the remote controlled connectors manufactured by ZPUE. A control cabinet housing is made from powder-painted aluminum sheet. Also installed is a special drainage system, which prevents contaminants from getting inside.
The cabinet housing door is equipped with a lock type Master-Key with the possibility to install a padlock, and the interlock which prevents accidental closing. Control cabinets can be equipped with a service slot 230 V AC, internal lighting, 30 W heater and exhaust ventilator.

Installed at the bottom of the control cabinet are metal glands with diameters fi 36 and fi 29, which conduct control cables from the switch disconnector drive, antenna cable and auxiliary transformer power supply or other power sources (glands are individually fitted at the production stage).
Installed In control cabinets are bay controllers type Ex-mBEL; SO-52v-21-xxx; USP-120/x and others available on the market, and communication modules of any manufacturer, which integrate the following functions: metering, protection, motor drive control, telemechanics, automatics and multi-channel fault recorder, as well as collecting information of the network parameters and events, and guarantee proper communication with the SCADA system.
A detailed functional description of the controllers and communication modules is contained in the separate controllers’ and modems’ documentation, which are available after making an enquiry to ZPUE S.A. or the manufacturer of the controller.

Compliance with standards:

PN-EN 62271-1 - High Voltage Switchgear and Control gear – Part 1: Common specifications,
PN-EN 61439-1:2011 - Low Voltage Switchgear and Control gear – Part 1: General specifications,
PN-EN 60529:2003 - Degrees of protection provided by enclosures (IP code),
PN-EN 60439-5:2008 - Low Voltage Switchgear and Control gear – Part 5: Particular requirements for assemblies for power distribution in public networks,
PN-EN ISO 1461:2011 - Hot dip galvanized coatings on fabricated iron and steel articles,
PN-EN ISO 12944-2:2001P - Paints and Varnishes - Corrosion protection of steel structures through the use of painting methods – Part 2: environment classification,
PN-EN 60529: 2003 - Degrees of protection provided by enclosures (IP code) and related standards,
PN-EN 62262:2003 - Degrees of protection against mechanical damages provided by the enclosures of the electrical devices (IK code),
PN-EN 61140:2005/A1:2008 - Protection against electric shock - Common aspects for installation and equipment,
PN-EN ISO 12944-2:2001P - Paints and Varnishes - Corrosion protection of steel structures through the use of painting methods – Part 2: environment classification.

Control cabinets series SO parameters
Rated voltage of the altering current power supply	230VAC
Rated voltage of the internal systems power supply	24/12VDC
Degree of protection	IP54
Ambient temperature range	-40°C +55°C
Possibility to install transmission modules	GPRS/TETRA/NET-MAN/TRUNKING
Self-weight	35-50kg*

* Self-weight influenced by the equipment variant and the number of operated connectors.

Flow chart of the control cabinet „SO”

Communication with the
supervision centres
for the Smart Grid networks

Szafa obiektowa SO1G/THO ze sterownikiem SO-52v-21

Control cabinet SO1G/THO with the SO-52v-21 controller

Szafa obiektowa SO5G/THO ze sterownikiem Ex-mBEL_S2

Control cabinet SO5G/THO with the Ex-mBEL_S2 controller

Szafa obiektowa SO1/2G/THO ze sterownikiem SO-52v-21-AUT

Control cabinet SO1/2G/THO with the SO-52v-21-AUT controller

Connectors are three-pole appliances with one drive. Each pole is equipped with two supporting insulators – fixed or movable. Connectors can be equipped with porcelain, composite insulators with cycloaliphatic resin or silicone in an HTV rubber cover. Handles with main contacts are installed to the insulators. The main contacts are made from tinning coated, profiled copper flat bars. The construction of the contacts allows their self-guidance, and provides a large contact surface and clamping force.

Appliances, as standard, are equipped with current terminals, which allow the installation of isolated or naked aluminum electricity cables with a cross-section of 16-95 mm2 (a special design allows connecting cables with a cross-section of 120 mm2). This information must be provided while placing an order or request. Additionally, appliances with earthing switches are equipped with a flexible contact, which takes over the effects of bending on a movable appliance pole.

Connectors in the modular structure can be expanded with additional elements such as: lightning arresters, additional support insulators. They can be installed in the horizontal or vertical position.

Characteristics

Visible safe isolation gap,
fault-free operations in extreme weather conditions,
low wear and ageing reduction of all active components achieved thanks to the application of the highest quality switching units, which have excellent mechanical and electrical properties according to the latest norms PN-EN.

Connectors with limited connection capability 25 a in a frame version

Compliance with standards:

PN-EN 62271-103:2011 - “High Voltage Switchgear and Control gear – Part 103: Disconnectors with rated voltages above 1 kV and up to and including 52 kV”,
PN-EN 62271-1:2009+A1:2011 - “High Voltage Switchgear and Control gear – Part 1: Common specifications”,
PN-EN 62271-102:2005; PN-EN 62271-102:2005/A1:2011 - “High Voltage Switchgear and Control gear – Part 102: High voltage altering current disconnectors and earthing switches”,
PN-EN ISO 1461:2011 - Hot dip galvanized coatings on fabricated iron and steel articles,
PN-EN 61140:2005/A1 - Protection against electric shock. Common aspects for installation and equipment.

RN III 24(36)/4; RUN III 24(36)/4; ON III 24(36)/4; OUN III 24(36)/4 connector parameters
Connector type	RUN (RN)	RUN (RN)	OUN (ON)	OUN (ON)
Rated voltage U_r	24(25)kV	36kV	24(25)kV	36kV
Rated frequency – number of phases f_r	50 Hz-3	50 Hz-3	50 Hz-3	50 Hz-3
Rated power frequency withstand voltage – in wet conditions and when it rains – 1 min. U_d - to the ground and inter-phases - safe isolation break	50kV 60kV	70kV 80kV	50kV 60kV	70kV 80kV
Rated lightning impulse withstand voltage 1,2/50ms U_p - to the ground and inter-phases - safe isolation break	125kV 145kV	170kV 195kV	125kV 145kV	170kV 195kV
Rated continuous current I_r	400A (800A*)	400A (800A*)	400A (800A*)	400A (800A*)
Rated short-time withstand current I_k	16kA (1s)	16kA (1s)	16kA (1s)	16kA (1s)
Rated peak current strength I_p	40kA	40kA	40kA	40kA
Rated short-circuit making current I_ma	16kA	16kA	16kA	16kA
Rated short-circuit breaking current in a circuit with low inductance I_load	25A	25A	-----	-----
Rated short-circuit breaking current in a ring network circuit I_loop	25A	25A	-----	-----
Rated short-circuit breaking current of cable charging I_cc	20A	10A	-----	-----
Mechanical durability (the process defined as closing and opening)	5000	5000	2000	2000
Operation temperature	- 40°C +50°C	- 40°C +50°C	- 40°C +50°C	- 40°C +50°C
Electricity class	E3	E3	-----	-----

* Parameters were given to the connector with fixed poles

Switch disconnectors and disconnectors have a certificate of conformity from the accredited body: the Institute of Electrical Engineering in Warsaw.

View, dimensions and construction of the connectors

View, dimensions and construction of the modular connectors

* Dimensions relating to the connectors 36 kV

switch disconnector frame (beam)
bushing insulator
switch disconnector main contacts
snap action movable contacts
movable support
snap action contact
earthing switch contact
earthing switch supporting structure
drive lever of the switch disconnector
connection terminal
oscillating element with a terminal strip

View, dimensions and construction of the frame connectors

* Dimensions relating to the connectors 36 kV

switch disconnector frame (beam)
bushing insulator
switch disconnector main contacts
snap action movable contacts
movable support
snap action contact
earthing switch contact
earthing switch supporting structure
drive lever of the switch disconnector
connection terminal
oscillating element with a terminal strip

Connectors with limited capability rated continuous current 800A

The Connector structure refers to well-known power industry solutions, which have been in use for many years now. A modified contact system allows the transmission and switching capability to be increased. The application of silicone drive insulators eliminates the risk of damage to this element. The main shaft interlock prevents faulty switching operations and considerably improves the handling safety of the appliance. Connectors can be equipped with porcelain, composite insulators with cycloaliphatic resin or silicone in an HTV rubber cover. Contact elements applied from our production units guarantees the proper electrical and mechanical operation of the appliance. Appliances are designed to power lines with considerable cable cross-sections up to 240 mm2, overhead switchgear busbar bridges and stations 110 kV/15 – 24 – 36 kV and for cable trays. Standard hand drives manufactured by ZPUE S.A. are used to control the connectors.

View, dimensions and construction of the connectors 800A

switch disconnector frame (beam)
bushing insulator
switch disconnector main contacts
snap action movable contacts
movable support
snap action contact
earthing switch contact
earthing switch supporting structure
switch disconnector drive mechanism
place for cable connection
earthing switch drive mechanism

Connectors with limited connection capability - connectors designation

Łączniki z ograniczoną zdolnością łączeniową - oznaczenia łączników

RUN III 24/4 P
Stands for an overhead, three-pole switch disconnector
with the earthing switch for the rated voltage 24 kV and rated continuous current 400 A.

ON III 24/4 P
Stands for an overhead, three-pole disconnector
for the rated voltage 24 kV and rated continuous current 400 A.

RUN III 24/4 o W-S-V
Stands for an overhead, three-pole switch disconnector
with the earthing switch 24 kV/400 A with an arrester, modular
composite insulators in a silicone rubber cover designed for vertical installation

OUN III 24/8 N-S
Overhead, three-pole disconnector with the earthing switch
24 kV/800 A with a fixed pole, composite insulators in a silicone rubber cover

OUN III 36/8 N-S
Overhead, three-phase disconnector with the earthing switch
36 kV/800 A with a fixed pole, composite insulators in a silicone rubber cover

* refers to the modular connectors
** refers to the fixed pole

Frame versions connectors

Disconnector ON III 24/4 P(S)(K)

P (51,5 kg)
S (41,3 kg)
K (47,5 kg)

Disconnector with the earthing switch OUN III 24/4 P(S)(K)

P (53,5 kg)
S (43,3 kg)
K (49,5 kg)

Switch disconnector RN III 24/4 P(S)(K)

P (51,7 kg)
S (41,5 kg)
K (47,7 kg)

Switch disconnector with the earthing switch RUN III 24/4 P(S)(K)

P (53,7 kg)
S (43,5 kg)
K (49,7 kg)

Disconnector ON III 36/4 P(S)(K)

P (68,7 kg)
S (53,3 kg)
K (59,5 kg)

Disconnector with the earthing switch OUN III 36/4 P(S)(K)

P (73,3 kg)
S (55,3 kg)
K (64,1 kg)

Switch disconnector RN III 36/4 P(S)(K)

P (69,0 kg)
S (53,8 kg)
K (59,8 kg)

Switch disconnector with the earthing switch RUN III 36/4 P(S)(K)

P (73,7 kg)
S (55,7 kg)
K (64,5 kg)

Disconnector ON III 24/8 N-P(S)(K)

P (80,2 kg)
S (70,0 kg)
K (74,5 kg)

Disconnector with the earthing switch OUN III 24/8 N-P(S)(K)

P (90,2 kg)
S (78,0 kg)
K (82,5 kg)

Switch disconnector RN III 36/8 N-P(S)(K)

P (100 kg)
S (85,0 kg)
K (92,0 kg)

Switch disconnector with the earthing switch RUN III 36/8 N-P(S)(K)

P (108 kg)
S (93,0 kg)
K (98,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors in a basic version (horizontal)

Disconnector ON III 24/4 W-S(K)(P)-H

P (59,5 kg)
S (49,3 kg)
K (57,5 kg)

Disconnector with the earthing switch OUN III 24/4 W-S(K)(P)-H

P (61,5 kg)
S (51,5 kg)
K (58,5 kg)

Switch disconnector RN III 24/4 W-S(K)(P)-H

P (61,5 kg)
S (51,5 kg)
K (59,5 kg)

Switch disconnector with the earthing switch RUN III 24/4 W-S(K)(P)-H

P (63,5 kg)
S (53,3 kg)
K (60,0 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors in a basic version (vertical)

Disconnector ON III 24/4 W-S(K)(P)-V

P (59,5 kg)
S (49,3 kg)
K (57,5 kg)

Disconnector with the earthing switch OUN III 24/4 W-S(K)(P)-V

P (61,5 kg)
S (51,5 kg)
K (58,5 kg)

Switch disconnector RN III 24/4 W-S(K)(P)-H

P (61,5 kg)
S (51,5 kg)
K (59,5 kg)

Switch disconnector with the earthing switch RUN III 24/4 W-S(K)(P)-V

P (63,5 kg)
S (53,3 kg)
K (60,0 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with the construction for lightning arresters installation (horizontal)

Disconnector ON III 24/4 o W-S(K)(P)-H

modulowe zabudowa ogranicznikow przepiec horyzontal schem 01

P (65,5 kg)
S (55,3 kg)
K (63,5 kg)

Disconnector with the earthing switch OUN III 24/4 o W-S(K)(P)-H

modulowe zabudowa ogranicznikow przepiec horyzontal schem 03

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector RN III 24/4 o W-S(K)(P)-H

modulowe zabudowa ogranicznikow przepiec horyzontal schem 02

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector with the earthing switch RUN III 24/4 o W-S(K)(P)-H

modulowe zabudowa ogranicznikow przepiec horyzontal schem 04

P (69,5 kg)
S (59,3 kg)
K (67,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with the construction for support insulators installation (horizontal)

Disconnector ON III 24/4 i W-S(K)(P)-H

modulowe zabudowa izolatorow wsporczych horyzontal schem 01

P (65,5 kg)
S (55,3 kg)
K (63,5 kg)

Disconnector with the earthing switch OUN III 24/4 i W-S(K)(P)-H

modulowe zabudowa izolatorow wsporczych horyzontal schem 03

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector RN III 24/4 i W-S(K)(P)-H

modulowe zabudowa izolatorow wsporczych horyzontal schem 02

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector with the earthing switch RUN III 24/4 i W-S(K)(P)-H

modulowe zabudowa izolatorow wsporczych horyzontal schem 04

P (69,5 kg)
S (59,3 kg)
K (67,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with the construction for lightning arresters installation (vertical)

Disconnector ON III 24/4 o W-S(K)(P)-V

modulowe zabudowa ogranicznikow przepiec wertykal schem 01

P (65,5 kg)
S (55,3 kg)
K (63,5 kg)

Disconnector with the earthing switch OUN III 24/4 o W-S(K)(P)-V

modulowe zabudowa ogranicznikow przepiec wertykal schem 03

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector RN III 24/4 o W-S(K)(P)-V

modulowe zabudowa ogranicznikow przepiec wertykal schem 02

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector with the earthing switch RUN III 24/4 o W-S(K)(P)-V

modulowe zabudowa ogranicznikow przepiec wertykal schem 04

P (69,5 kg)
S (59,3 kg)
K (67,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with the construction for support insulators installation (vertical)

Disconnector ON III 24/4 i W-S(K)(P)-V

modulowe zabudowa izolatorow wsporczych wertykal schem 01

P (65,5 kg)
S (55,3 kg)
K (63,5 kg)

Disconnector with the earthing switch OUN III 24/4 i W-S(K)(P)-V

modulowe zabudowa izolatorow wsporczych wertykal schem 03

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector RN III 24/4 i W-S(K)(P)-V

modulowe zabudowa izolatorow wsporczych wertykal schem 02

P (67,5 kg)
S (57,3 kg)
K (65,5 kg)

Switch disconnector with the earthing switch RUN III 24/4 i W-S(K)(P)-V

modulowe zabudowa izolatorow wsporczych wertykal schem 04

P (69,5 kg)
S (59,3 kg)
K (67,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with air interrupters 100 A (horizontal)

Switch disconnector RN III 24/4-100A W-S(K)(P)-H

modulowe z komorami powietrznymi 100a horyzontal schem 01

P (63,5 kg)
S (53,3 kg)
K (61,5 kg)

Switch disconnector with the earthing switch RUN III 24/4-100A W-S(K)(P)-H

modulowe z komorami powietrznymi 100a horyzontal schem 02

P (65,5 kg)
S (55,5 kg)
K (62,0 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with air interrupters 100 A (vertical)

Switch disconnector RN III 24/4-100A W-S(K)(P)-V

modulowe z komorami powietrznymi 100a wertykal schem 01

P (63,5 kg)
S (53,3 kg)
K (61,5 kg)

Switch disconnector with the earthing switch RUN III 24/4-100A W-S(K)(P)-V

modulowe z komorami powietrznymi 100a wertykal schem 02

P (65,5 kg)
S (55,5 kg)
K (62,0 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors for 36 kV with the construction for lightning arresters installation (horizontal)

Switch disconnector RN III 24/4-100A o W-S(K)(P)-H

modulowe zabudowa ogranicznikow przepiec w wersji horyzontal schem 01

P (69,5 kg)
S (59,5 kg)
K (67,5 kg)

Switch disconnector with the earthing switch RUN III 24/4-100A o W-S(K)(P)-H

modulowe zabudowa ogranicznikow przepiec w wersji horyzontal schem 02

P (71,5 kg)
S (61,3 kg)
K (69,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors with the construction for lightning arresters installation (vertical)

Switch disconnector RN III 24/4-100A o W-S(K)(P)-V

modulowe zabudowa ogranicznikow przepiec w wersji wertykal schem 01

P (69,5 kg)
S (59,5 kg)
K (67,5 kg)

Switch disconnector with the earthing switch RUN III 24/4-100A o W-S(K)(P)-V

modulowe zabudowa ogranicznikow przepiec w wersji wertykal schem 02

P (71,5 kg)
S (61,3 kg)
K (69,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors for 36 kV in a Basic version (horizontal)

Disconnector ON III 36/4 W-S(K)(P)-H

modulowe dla36kv wersja podstawowa horyzontal schem 01

P (64,0 kg)
S (54,3 kg)
K (62,5 kg)

Disconnector with the earthing switch OUN III 36/4 W-S(K)(P)-H

modulowe dla36kv wersja podstawowa horyzontal schem 03

P (66,5 kg)
S (56,5 kg)
K (63,5 kg)

Switch disconnector RN III 36/4 W-S(K)(P)-H

modulowe dla36kv wersja podstawowa horyzontal schem 02

P (66,5 kg)
S (56,5 kg)
K (64,5 kg)

Switch disconnector with the earthing switch RUN III 36/4 W-S(K)(P)-H

modulowe dla36kv wersja podstawowa horyzontal schem 04

P (68,5 kg)
S (58,5 kg)
K (65,0 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Modular connectors for 36 kV with the construction for lightning arresters installation (horizontal)

Disconnector ON III 36/4 o W-S(K)(P)-H

modulowe dla36kv zabudowa ogranicznikow przepiec horyzontal schem 01

P (73,5 kg)
S (64,8 kg)
K (72,5 kg)

Switch disconnector RN III 36/4 o W-S(K)(P)-H

modulowe dla36kv zabudowa ogranicznikow przepiec horyzontal schem 02

P (77,5 kg)
S (66,0 kg)
K (75,0 kg)

Disconnector with the earthing switch OUN III 36/4 o W-S(K)(P)-H

modulowe dla36kv zabudowa ogranicznikow przepiec horyzontal schem 03

P (76,5 kg)
S (67,3 kg)
K (75,0 kg)

Switch disconnector with the earthing switch RUN III 36/4 o W-S(K)(P)-H

modulowe dla36kv zabudowa ogranicznikow przepiec horyzontal schem 04

P (79,5 kg)
S (68,5 kg)
K (77,5 kg)

Notice:
The manufacturer reserves the right to make construction modifications at any time, which may result in a change of the device’s weight and dimensions.

Overhead modular switch disconnectors type RN III 24/4-100A (RUN III 24/4-100A) are appliances used in overhead distribution networks 15 and 20 kV and are designed for switching off/on the load current up to 100 A. Rated continuous current 400 A.
Switch disconnectors are composed of three independent poles installed on a transmission shaft. The distance between particular poles can be adjusted in a range between 450 and 650 mm.
Modular construction of the unit allows installation of particular elements- carrying beam, poles, drive – on a pole without the need to use heavy equipment. The construction of the unit allows its installation on a standard pole without additional supporting structures. Connections are equipped with composite insulators with a polycarbonate core in HTV rubber cover type HASDI. Main contacts are made from profiled copper flat bars coated by silver plating or tinning, depending on the ZE standards. Isolators are equipped with contact systems with air load break interrupters. Movable isolators are equipped with contact systems with a switching contact and spring mechanism. Poles are beared with brass sleeves. As standard, the overhead power line connection allows installation of isolated or naked aluminum electricity cables with a cross-section 16-95 mm2 (a special design allows connecting cables with a cross-section 120 mm2). A flexible contact takes over bending effects on a movable appliance pole. Appliances construction allows expansion of operating devices with additional modules- earthing switches, load break interrupter, lightning arresters or additional insulators – allowing the configuration depending on the needs.

Switch disconnectors can be installed in a horizontal or vertical position.
Switch disconnectors are adapted to the remote control using drives series NSP-7/SO-2 i NSP-8/SO2, as well as to the manual drive using a crank (which is located inside the drive) or only by a manual drive (without the motor).

Switch disconnectors are permitted to be used in all marketing companies. They can be equipped with current transformers type AGCE-24 or CSO, which are used to detect short-circuit currents in MV networks.

Characteristics

Visible safe isolation gap
Fault-free operations in extreme weather conditions
Low wear and ageing reduction of all active components achieved thanks to the application of the highest quality switching units, which have excellent mechanical and electrical properties according to norm 62271-103
Possibility to expand with other components e.g. current transformers, lightning arresters
High switching current 100A without the need to switch off the whole linear sequence.

RN and RUN switch disconnector parameters

Compliance with standards:

PN-EN 62271-103 :2011 - “High Voltage Switchgear and Control gear – Part 103: Disconnectors with rated voltages above 1 kV and up to and including 52 kV”,
PN-EN 62271-1:2009+A1:2011 - “High Voltage Switchgear and Control gear – Part 1: Common specifications”,
PN-EN 62271-102:2005; PN-EN 62271-102:2005/A1:2011 - “High Voltage Switchgear and Control gear – Part 102: High voltage altering current disconnectors and grounding switches”,
PN-EN ISO 1461:2011 - Hot dip galvanized coatings on fabricated iron and steel articles,
PN-EN 61140:2005/A1 - Protection against electric shock. Common aspects for installation and equipment.

RN III 24/4-100A i RUN III 24/4-100A switch disconnector parameters
Rated voltage U_r	24(25)kV
Rated frequency – number of phases f_r	50 Hz-3
Rated power frequency withstand voltage – in wet conditions and when it rains – 1 min. U_d - to the ground and inter-phases - safe isolation break	50kV 50kV
Znamionowe napięcie wytrzymywane udarowe piorunowe 1,2/50ms Up - to the ground and inter-phases - safe isolation break	125kV 145kV
Rated continuous current I_r	400A
Rated short-time withstand current I_k	16kA (1s)
Rated peak current strength I_p	40kA
Rated short-circuit making current I_ma	16kA
Rated short-circuit breaking current in a circuit with low inductance I_load	100A
Rated short-circuit breaking current in a ring network circuit I_loop	100A
Rated short-circuit breaking current of cable charging I_cc	20A
Mechanical durability (the process defined as closing and opening)	5000
Operation temperature	- 40°C + 60°C
Electricity class	E3

Switch disconnectors have a certificate of conformity from the accredited body: the Institute of Electrical Engineering in Warsaw.

View, dimensions and construction

Widok, wymiary i budowa rozłącznika RN i RUN

Switch disconnector frame (beam)
Bushing insulator
Main contacts of the switch disconnector
Flicker movable contacts
Movable support
Element for the interrupter installation
Air interrupter 100A
Connecting cable
Drive lever of the switch disconnector
Connection terminal
Oscillating element with a terminal strip

Load break interrupter view 100A

Disconnector closed

Widok komory łączeniowej - rozłącznik zamknięty

Disconnector opened

Widok komory łączeniowej - rozłącznik otwarty

RPN III 24/400 and RPN III 24/400-W type switch disconnectors are manufactured in two variants: frame, signed as RPN III 24/400 and modular, signed as RPN III 24/400-W. They are also composed of three independent poles installed on a transmission shaft. Durable construction provides high reliability and great endurance. The structure allows direct cable line connection with the switch disconnector. Each pole is equipped with composite insulators with a polycarbonate core covered with HTV rubber or cycloaliphatic resin. The distance between particular poles can be regulated in a range between 445 and 650 mm (applied only to the modular switch disconnector). The distance between poles in a frame switch disconnector is 435 mm. The modular structure of the unit allows its expansion on poles E, EM, ŻN, BSW or lattice towers without additional support constructions. One insulator is permanently fixed to the pole, but the other is mounted on a movable support. Current terminals allow the installation of isolated or naked aluminum power cables with a cross-section of 16 ÷ 95 mm2. The main contacts have a jaw structure. These contacts are made from profiled copper flat bars joined together with rivets, and a spring installed in stabilization foundations, which is permanently pressed against the surfaces. Contact elements are covered with silver plating, which ensures long working time and protects against corrosive environment conditions. Auxiliary contacts, which work at the same time as main contacts, are opened after the main contacts open and when they are at a safe distance from each other. The construction of the auxiliary contacts and break interrupters allows reclosing on and off of the operating currents up to 400A. Switch disconnectors are adjusted to remote control with a drive series NSP-7/SO-2 i NSP-8/SO2, as well as manual control using a hand crank (which is located in a drive), or using only a manual drive (without the motor).

RPN series switch disconnectors are permitted to be used in all marketing companies. They can be equipped with current transformers type AGCE-24 or CSO, which are used to detect short-circuit currents in MV networks.

Characteristics

visible safe isolation gap
fault-free operations in extreme weather conditions
low wear and ageing reduction of all active components achieved thanks to the highest quality switching unit application, which have excellent mechanical and electrical properties according to norm 62271-103
possibility to expand with other components e.g. current transformers, lightning arresters
network nodes can be configured thanks to the variant construction of the appliances; it is possible to install three switch disconnectors on one pole.

RPN switch disconnector parameters

Compliance with standards:

PN-EN 62271-103:2011 - “High Voltage Switchgear and Control gear – Part 103: Disconnectors with rated voltages above 1 kV and up to and including 52 kV”,
PN-EN 62271-1:2009+A1:2011 - “High Voltage Switchgear and Control gear – Part 1: Common specifications”,
PN-EN 62271-102:2005; PN-EN 62271-102 :2005/A1:2011 - “High Voltage Switchgear and Control gear – Part 102: High voltage altering current disconnectors and earthing switches”,
PN-EN ISO 1461:2011 - Hot dip galvanized coatings on fabricated iron and steel articles,
PN-EN 61140:2005/A1 - Protection against electric shock. Common aspects for installation and equipment.

RPN switch disconnector parameters
Rated voltage U_r	24(25)kV
Rated frequency – number of phases f_r	50 Hz-3
Rated power frequency withstand voltage – in wet conditions and when it rains – 1 min. U_d - to the ground and inter-phases - safe isolation break	65kV 75kV
Rated lightning impulse withstand voltage 1,2/50ms U_p - to the ground and inter-phases - safe isolation break	125kV 145kV
Rated continuous current I_r	400A
Rated short-time withstand current I_k	16kA (1s)
Rated peak current strength I_p	40kA
Rated short-circuit making current I_ma	16kA
Rated short-circuit breaking current in a circuit with low inductance I_load	400A
Rated short-circuit breaking current in a ring network circuit I_loop	400A
Rated short-circuit breaking current of cable charging I_cc	30A
Mechanical durability (the process defined as closing and opening)	5000
Operation temperature	- 40°C + 60°C
Electricity class	E3

Switch disconnectors have a certificate of conformity from the accredited body: the Institute of Electrical Engineering in Warsaw.

View, dimensions and construction RPN III 24/400-W

Widok, wymiary i budowa RPN III 24/400-W

View, dimensions and construction RPN III 24/400

switch disconnector frame (beam)
bushing insulator
switch disconnector main contacts
auxiliary movable contacts
movable support
parallel contacts, which propel interrupter
pole with vacuum interrupter
disc guide
drive lever
connection terminal
oscillating element with a terminal strip

Additional equipment, signallization and current metering

Each RPN switch disconnector can be additionally equipped with current transformers type AGCE, which is a new solution in current metering, protection and medium voltage power networks supervision.
The current transformer type AGCE-24 is designed for overhead networks with 15, 20 kV rated voltage.
It can be used for protection or short-circuit current signalization, as well as current metering in MV power lines. The creepage distance refers to the isolation voltage 24 kV, for the highest pollution level it ranges to 31mm/ 1kV. The current transformer is manufactured in accordance with the standards in force as follows:

Current transformers parameters AGCE-24
The highest permitted voltage	24kV
Rated isolation test voltage	50kV
Rated impact test voltage	125kV
Primary rated current I_pr (Zakres)	200A - 400A
Secondary rated current I_sr	1A
Thermal and dynamic strenght I_th/I_dyn	16/40kA
Power	2VA
Accurracy class	2%
Cable length	10mb.