Medium voltage gas insulated switchgear - (MV) type TPM

Introduction

TPM series switchgear are a group of medium voltage ring type switchgear (RMU - Ring Main Unit), in SF₆ gas insulation for use indoors. They are designed for supply and secondary distribution of electricity in radial and ring urban grids, in industry and in all facilities where compact switchgears with high technical parameters are very desirable. The switchgears are manufactured and tested based on the following standards. Type testing performed by independent accredited certification bodies. The test results are confirmed by appropriate certifications and test reports.

Characteristics

miniature switchgear dimensions while maintaining high technical parameters,
very high safety level, including arc protection - confirmed by appropriate certificates,
possibility to configure the switchgear from a range of different purpose bays: feeder, transformer, circuit breaker, metering, cable bays,
the possibility of configuring the switchgear with the use of a wide range of bays: feeder, transformer, circuit-breaker, bus coupler, metering,
possibility of easily expanding the switchgear with additional assemblies (which should be taken into account when placing the order) each assembly may be manufactured as expandable,
the possibility of adapting the switchgear to work with remote control and metering systems, e.g. to work in Smart Grid networks,
fast earthing switch, which earths the fuse link on both sides in the transformer bay,
the main SF₆ gas tank is made of stainless, acid-resistant steel, with welded connections, which ensure environmental and 6 personal safety, and remain sealed over the entire period of switchgear operation,
the manufacturer is able to recycle the waste switchgear and safely remove the SF₆ gas from their tanks.

Possible markings/naming scheme

Safety

robust construction of TPM type switchgear ensures high reliability,
the tank is constructed of stainless, acid-resistant steel, ensuring resistance to environmental conditions,
use of shielded terminations guarantees safety, e.g. during servicing operations with the front panel removed and live supply cables,
gas pressure indicator - pressure meter which shows the correct pressure of insulating gas inside the tank,
resistance to internal arc of 20 kA as a standard and 22 kA in custom design,
pressure increase caused by internal arcing is eliminated by opening the safety valve installed in the lower part of the switchgear's tank. The gases are discharged to the cable duct, eliminating the hazard to personnel,
each switchgear unit is equipped with voltage indicators, which enable the personnel to make sure that the insulating bushing terminals are not live,
legible system display which improves intuitiveness of operation and facilitates reading the state of devices,
a set of mechanical interlocks enables opening the front panels of the cable compartment only after the earthing switch is closed,
a set of mechanical interlocks between the devices, which prevents performing incorrect switching operations,
optional use of electromagnetic interlocks, which prevent the closing of the earthing switch with live supply cables,
a set of auxiliary contacts with device state output, guaranteeing safety of remote operation,
the use of pressure control at all times for the motor drive option guarantees safety of remote operation.

Basic technical data

Compliance with standards:
The TPM type switchgear meets the requirements of the following standards:

PN-EN 62271-1 - „High-voltage switchgear and controlgear - Part 1: Common specifications”,
PN-EN 62271-200 - „High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV”,
PN-EN 62271-100 - „High-voltage switchgear and controlgear - Part 100: High-voltage alternating-current circuit-breakers”,
PN-EN 62271-102 - „High-voltage switchgear and controlgear - Part 102: High-voltage alternating current disconnectors and earthing switches”,
PN-EN 62271-103 - „High-voltage switchgear and controlgear - Part 103: Switches for rated voltages above 1 kV up to and including 52 kV”,
PN-EN 62271-105 - „High-voltage switchgear and controlgear - Part 105: Alternating current switch-fuse combinations”.

The switchgear is certified by the Electrotechnical Institute.

TPM switchgear rated parameters
MV rated voltage	U_r	25 kV
Rated frequency - number of phases	F_r	50 / 60 Hz / 3
Rated network frequency withstand voltage	U_d	50 kV / 60 kV
Withstand lightning surge voltage (1.2/50 μs)	U_p	125 kV / 145 kV
Primary busbars continuous rated current	I_r	630A
Rated short-time withstand primary circuits current	I_k	16 kA (3s) / 20 kA (3s) / 25 kA (3s) ^*1)
Rated peak withstand primary circuits current	I_p	40 kA / 50 kA / 63 kA ^*1)
Resistance to internal arc effects	I_A	20 kA (1s) / 22 kA (1s) ^*1)
IAC class		AFLR
IP protection rating		IP4X (IP54 option)
Mechanical impact resistance		IK10
¹⁾ Custom design

Environmental service conditions:
Ambient temperature
- peak short-time	+ 40°C
- highest day average	+ 35°C
- minimum
- without secondary circuits	- 25°C
- with secondary circuits	- 5°C / - 15°C / - 25°C ²⁾
Relative humidity of air
- highest day average	95%
- highest month average	90%
Vibrations	vibrations caused by external factors or earthquakes negligible
Internal Protection
- device compartment, stainless steel SF₆ tank	IP 67
- drive mechanism and connections compartment	IP 4X
Soiling conditions
- significant soiling with salt, vapour, dust, smoke, flammable gases	NONE
- corrosive	NONE
- icing, frosting and dewing	NONE
¹⁾ Unless the manufacturer of instrumentation & control and protection devices has specified otherwise.

Notice:
Rated currents of the fuse links to protect primary transformer circuits (recommended by leading manufacturers), with rated voltage 6 kV, 10 kV, 15 kV and 20 kV, should be selected in accordance with IEC 282-1, DIN 43625 thermal protection.

Field equipment

L - line feeder equipment

Parameters
U_r	= 25 kV
F_r	= 50/60 Hz
U_d	= 50/60 kV
U_p	= 125/145 kV
I_r	= 630 A
I_k	= do 20 kA
I_p	= do 50 kA
I_A	= do 22 kA
	switch disconnector class M2, E3
	earthing switch class M0, E2

Electrical data of line functional unit (L)
Continuous rated current	I_r	630 A
Rated short-circuit making current	I_ma	50 kA
Rated low inductance circuit breaking current	I_load	630 A
Rated ring network circuit breaking current	I_loop	630 A
Rated buried cable charging breaking current	I_icc2	60 A
Rated overhead line charging breaking current	I_icc1	20 A
Rated earth fault breaking current	I_ef1	180 A
Rated buried cable and overhead line charging breaking current in earth fault conditions	I_ef2	104 A
Switch disconnector class		M2, E3
Earthing switch class		M0, E2

Standard

meets the requirements of the PN-EN 62271-103 Switches for rated voltages above 1 kV up to and including 52 kV standard,
the L unit as a single module with option of expanding, in almost any configuration up to four units in a common tank,
disconnector-earthing switch unit, the construction of which is based on common moving contacts and separated fixed contacts of the earthing switch and switch disconnector,
switch disconnector with a switching operations arc quenching system,
manual double spring drive which ensures intuitive and easy operation and snap-action closing and opening of the switching devices,
system display representing the state of devices and entire primary circuits,
type C insulating bushings with M16 thread, equipped with capacitive voltage dividers intended for operation with voltage indicators in the LRM system and to operate with electromagnetic interlocks,
cable voltage indicator in the LRM system,
pressure meter - gas pressure indicator with a scale with two zones, indicating the rated absolute pressure of the SF₆ gas - 125 kPa (0.125 MPa) at a temperature of 20°C (one per one 6 tank),
a system of mechanical interlocks between the devices and front panels of the cable compartment preventing incorrect switching operations - removing the front panel only after closing the earthing switch,
safety valve (one per one tank), which is opened by pressure increase caused by arcing inside the tank, directing the gases downwards, to the cable duct, eliminating the hazard to personnel,
cable clamps.

Option

24 V DC motor drive (other supply voltage on request), possibility of easy expansion at the facility,
pressure control - for operating with motor drive, telemetry,
SEM SC 11 field controller plus local control panel, Modbus communication or binary communication
auxiliary contacts as representation of state of devices for telemetry systems,
voltage sensors - low power transformers,
current transformers, Rogowski coils,
earth fault transformers,
short-circuit current indicators,
auxiliary circuits cubicle/operation with telemetry,
“ON”, “OFF” signalling in the form of signalling lamps,
anti-condensation heaters,
possibility of expanding on the left and right side,
key interlock of the switch disconnector or earthing switch socket,
electromagnetic interlock of the earthing switch socket,
overvoltage limiters.

T - tansformer feeder equipment

Parameters
U_r	= 25 kV
F_r	= 50/60 Hz
U_d	= 50/60 kV
U_p	= 125/145 kV
I_r	= 250 A (125 A fuse link)
I_k	= 20 kA (1s)
I_p	= 50 kA
I_A	= do 22 kA
I_transf	= 720 A
	switch disconnector class M2, E3

Electrical data of the fused transformer functional unit (T)
Continuous rated current	I_r	250 A
Maximum thermally protected fuse link current		125 A
Through-current	I_transfer	720 A
Switch disconnector electrical class		M2, E3
Maximum transformer power		6 kV	800 kVA
		10 kV	1000 kVA
		15 kV	1600 kVA
		20 kV	2000 kVA

Standard

meets the requirements of the PN-EN 62271-105 Alternating current switch-fuse combinations standard
the T unit as a single module with option of expanding, in almost any configuration up to four units in a common tank,
disconnector-earthing switch unit, the construction of which is based on common moving contacts and separated fixed contacts of the earthing switch and switch disconnector,
lower earthing switch, ensuring earthing on both sides of the fuse links,
switch disconnector with a switching operations arc quenching system,
manual double spring drive which ensures intuitive and easy operation and snap-action closing and opening of the switching devices,
system display representing the state of devices and entire primary circuits,
stored energy release mechanism function, which allows the switch disconnector contacts to be opened when MV fuse links with thermal protection (striker) or a tripping coil is used,
blown fuse link indicator,
type A insulating bushings with plug-in socket, equipped with capacitive voltage dividers intended for operation with voltage indicators in the LRM system and to operate with electromagnetic interlocks,
cable voltage indicator in the LRM system,
a system of mechanical interlocks between the devices and front panels of the cable connection compartment preventing incorrect switching operations - removing the front panel only after the earthing switch is closed,
safety valve (one per one tank), which is opened by pressure increase caused by arcing inside the tank, directing the gases downwards, to the cable duct,
cable clamps.

Option

24 V DC motor drive (other supply voltage on request), possibility of easy expansion at the site,
pressure control - for operating with motor drive, telemetry,
SEM SC 11 field controller plus local control panel, binary or Modbus communication,
auxiliary contacts as representation of state of devices for telemetry systems,
fuse links with integrated temperature limiter (thermal trip), acc. to the IEC 60282-1, DIN 43625 standard, e.g. by SIBA
voltage sensors - low power transformers,
current transformers, Rogowski coils,
“ON”, “OFF” signalling in the form of signalling lamps,
anti-condensation heaters,
possibility of expanding on both sides,
key interlock of the disconnector or earthing switch socket,
electromagnetic interlock of the earthing switch socket, option dedicated for renewable energy system,
shunt trip - DWN 24 V DC coil, 230V AC/DC (other voltages on request).

W - circuit breaker feeder

Parameters
U_r	= 25 kV
F_r	= 50/60 Hz
U_d	= 50/60 kV
U_p	= 125/145 kV
I_r	= 630 A
I_k	= do 20 kA (1s)
I_sc	= do 50 kA
I_cc1	= 10 A
I_cc2	= 31,5 A
	circuit braker class M2, E2
	operating sequence duty cycle (O-0, 3s-CO-3min-CO)

Electrical data of circuit breaker feeder (W)
Continuous rated current	I_r	630 A
Short-circuit making current	I_ma	40 kA / 50 kA / 52,5 kA ^*1)
Short-circuit breaking current	I_sc	16 kA / 20 kA / 21 kA ^*1)
Rated low inductance circuit breaking current		630 A
Cable line current with no load - Icc1 / Icc2	I_cc1 / I_cc2	10 A / 31,5 A
Circuit breaker class		M2, E2
Operating sequence duty cycle		0-0, 3s-CO-3min-CO

Custom design:
¹⁾ For 12 kV voltage.

Standard

meets the requirements of the PN-EN 62271-100 Alternating current circuit-breakers standard,
meets the requirements of the PN-EN 62271-102 Alternating current disconnectors and earthing switches standard,
the W bay as a single module with option of expanding, in almost any configuration up to four bays in a common tank,
circuit breaker unit, the construction of which is based on the use of vacuum chambers with a breaking current of 16 kA or 20 kA, enclosed in an SF₆ gas filled tank,
disconnector-earthing switch unit, the construction of which is based on common moving contacts and separated fixed contacts of the earthing switch and disconnector. The function of the disconnector is to ensure a safe gap in the circuit,
manual spring drive of the circuit breaker, which ensures intuitive and easy operation and snapaction closing and opening of the switching devices, the drive has a charging system which allows a rapid breaker on-off cycle,
manual spring-less drive of the disconnector and earthing switch, which ensures intuitive and easy operation of the switching devices,
system display representing the state of devices and entire primary circuits,
circuit breaker charging indication,
independent protection, preferably AZZ-4 (by ITR) or WIC 1 (by Woodward) with dedicated current transformers,
type C insulating bushings with M16 thread, equipped with capacitive voltage dividers intended for operation with voltage indicators in the LRM system and to operate with electromagnetic interlocks,
cable voltage indicator in the LRM system,
pressure meter - gas density indicator with a scale with two zones, indicating the rated absolute pressure of the SF₆ gas - 125 kPa (0.125 MPa) at a temperature of 20°C (one per one tank),
a system of mechanical interlocks between the devices and front panels of the cable compartment preventing incorrect switching operations - removing the front panel only after closing the earthing switch,
safety valve (one per one tank), which is opened by pressure increase caused by arcing inside the tank, directing the gases downwards, to the cable duct, eliminating the hazard to personnel,
cable voltage indicator,
cable clamps.

Option

24V DC motor drive for the circuit breaker and for the disconnector and earthing switch (other supply voltage on request),
pressure control - for operating with motor drive, telemetry,
auxiliary contacts as representation of state of devices for telemetry systems,
protections other than preferred independent, unit controllers, ATS automation,
voltage sensors - low power transformers,
current transformers, Rogowski coils,
earth fault transformers,
auxiliary circuits cubicle/operation with telemetry,
“ON”, “OFF” signalling in the form of signalling lamps,
anti-condensation heaters,
possibility of expanding on both sides,
overvoltage limiters.

S - bus sectionalizer panel

Parameters
U_r	= 25 kV
F_r	= 50/60 Hz
U_d	= 50/60 kV
U_p	= 125/145 kV
I_r	= 630 A
I_k	= do 20 kA (1s)
I_p	= 50 kA
I_A	= do 22 kA
	switch disconnector class M2, E3
	earthing switch class M0, E2

Standard

meets the requirements of the PN-EN 62271-103 Switches for rated voltages above 1 kV up to and including 52 kV standard,
the S unit as a single module expandable both to the right and to the left,
disconnector, the construction of which is based on common moving contacts and on fixed contacts,
switching operations arc quenching system,
manual single or double spring drive (depending on the use of an earthing switch), which ensures intuitive and easy operation and snap-action closing and opening of the switching device,
system display representing the state of devices and entire primary circuits,
pressure meter - gas density indicator with a scale with two zones, indicating the rated absolute pressure of the SF₆ gas - 125 kPa (0.125 MPa) at a temperature of 20°C (one per one tank),
safety valve (one per one tank), which is opened by pressure increase caused by arcing inside the tank, directing the gases downwards, to the cable duct, eliminating the hazard to personnel.

Option

24 V DC motor drive (other supply voltage on request), possibility of easy expansion at the facility,
earthing switch of the primary circuit of the right section,
primary circuits (before and after the disconnector) voltage indicator,
pressure control - for operating with motor drive, telemetry,
SEM SC 11 field controller plus local control panel, binary or Modbus communication,
auxiliary contacts as representation of state of devices for telemetry systems,
anti-condensation heaters,
possibility of expanding on both sides,
key interlock of the disconnector or earthing switch socket.

M - metering panel equipment

Parameters
U_r	= 25 kV
F_r	= 50/60 Hz
U_d	= 50/60 kV
U_p	= 125/145 kV
I_r	= 630 A
I_k	= do 20 kA (1s)
I_p	= do 50 kA

Standard

meets the requirements of the PN-EN 62271-200 AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV standard,
the M unit as a single module expandable both to the right and to the left,
a system of primary busbars enclosed in a stainless steel tank,
a set of current transformers and voltage transformers,
primary circuits voltage indicator,
system display representing the state primary circuits,
pressure meter - gas density indicator with a scale with two zones, indicating the rated absolute pressure of the SF₆ gas - 125 kPa (0.125 MPa) at a temperature of 20°C (one per one tank),
safety valve (one per one tank), which is opened by pressure increase caused by arcing inside the tank, directing the gases downwards, to the cable duct, eliminating the hazard to personnel.

Option

pressure control - for operating with motor drive, telemetry,
anti-condensation heaters,
option of connecting with side connectors or cable terminations.

TPM type MV switchgear compartment

Switching device compartment

The switching device compartment is placed in a tank made from stainless steel sheet, with SF₆ gas is used as insulation, with very high dielectric strength and very good arc quenching ability. The following components were installed in the tank: primary busbars, switches and bushings. The switching device is an integrated disconnector and earthing switch, which is also opened and closed by snap-action. Each tank has a safety valve which can be opened to relieve the pressure increase caused by internal arcing. In TPM and TPM Kompact switchgear system, the valve is installed at the bottom of the tank in the cable connection compartment of one of the feeder units. Isolator bushings are equipped with capacitive voltage dividers, connected to voltage indicators located on the front panel of the switchgear cabinet. The switch disconnector itself and its drive mechanisms are exceptionally durable and reliable devices. Their design allows for 5000 operating cycles without any adjustment, maintenance, or component replacement.

Fuses compartment

Fuse links with integrated temperature limiter are installed in the switchgear fuses compartment (in special insulating tubes), in accordance with the DIN 43625 standard. The design of the fuses compartment prevents its opening before the earthing switch has been closed. Closing the switch disconnector in the transformer feeder is possible only after the fuse compartment door is closed. In the event the fuse link is blown, the striker mounted on the link trips the circuit breaker in the transformer feeder. The switch disconnector can be re-closed after replacement of the fuse links.

Drive mechanism compartment

The drive mechanism compartment contains the integrated, direct manual (motor driven) operating mechanism for switch disconnector and earthing switch or vacuum circuit breaker and disconnector with an earthing switch. The transformer feeder is moreover equipped with a stored energy release mechanism, which allows the switch disconnector to be opened after the activation of the fuse link striker, or in case a tripping coil is used. A blown fuse link is indicated on the front panel of the drive. In the switchgear cabinet operating mechanism compartment, there is a pressure gauge (calibrated to take into account state depending on temperature), which indicates the correct SF₆gas pressure inside the tank. Cable voltage indicators are installed In the front side of the switchgear cabinet.

Cable compartment

In the cable compartment, cable terminations are used to connect cables from the power grid to the switchgear. Individual feeders of the cable compartments have metal partitions which separate one feeder from another.
Each cable compartment is equipped with:

type C insulating bushings for incoming, outgoing and transformer feeders equipped with a power circuit breaker,
type A insulating bushings for transformer feeders equipped with MV fuses,
cable clamps,
earthing terminals for return cables.

Moreover each bay allows the installation of the following equipment:

current transformers, Rogowski coils,
voltage sensors,
overvoltage limiters,
combined systems with the use of deep front panels, e.g.: two terminations per phase, termination + voltage sensor, termination + overvoltage limiter, two terminations per phase + voltage sensor, two terminations per phase + overvoltage limiter, termination + overvoltage limiter + voltage sensor.

The TPM type switchgear is designed for the installation of cables with a cross-section up to 630 m², such as:

in plastic insulation, e.g.: YHAKXS, YHKX, XUHAKXS, XRUHKS.

Construction method for a cable duct under the TPM type MV switchgears

Figures 1–3 present a cable duct construction proposal. The cable bending radius (which depends on its outside diameter, according to PBUE) should be taken into account when establishing the dry cables duct depth. Figure 1 shows the suggested cable duct depth. It is possible to avoid or reduce the depth of the cable duct by using a raised base or a raised floor.

Figure 1 - Proposed depth of the cable duct under the TPM switchgear

Side view (TPM)

Side view (TPM Kompakt)

Dry single-core cable

Cable cross section (mm²)	Bending radius (mm)	Duct depth K (mm)
50	370	400
70	400	430
95	440	470
120	470	500
150	500	550
185	540	600
240	590	700

Figure 2 - Cable duct proposal, to be constructed under an TPM switchgear and TPM Kompakt

TPM switchgear cable connections

Cable fittings - GPH EUROMOLD terminations - interface A

Cable type	Cable cross-section depending on termination type	Termination type	Cable terminal type for a given termination/cable	Overvoltage limiter type depending on termination type
Single-core cables in plastic insulation with an Al and Cu phase core, with a return core of copper wires, for a voltage of 20 kV	25-120	K152SR (straight)¹⁾	crimped	156S A (possibility of connecting only with K200T)
	25-150	K200SR (straight)¹⁾	bolted
	25-150	K158LR (angle)	crimped
	25-150	K200LR (angle)	bolted
¹⁾ Possibility of using in TPM Compact swiftchgear.

Cable fittings - GPH EUROMOLD terminations - interface C

Cable type	Cable cross-section depending on termination type	Termination type	Cable terminal type for a given termination/cable	Overvoltage limiter type depending on termination type
Single-core cables in plastic insulation with an Al and Cu phase core, with a return core of copper wires, for a voltage of 20 kV	10-300	K430TB	bolted	300PB -10SA
	10-300	K480TB	bolted	800PB -10SA
	240-630	K484TB	bolted	800PB -10SA
	10-300	K400TB	bolted	400PB -10SA
	185-630	K440TB	bolted	400PB -10SA
	10-240	K400LB	crimped and bolted	400PB -10SA (only before the termination)

Cable fittings - CELLPACK terminations - interface A

Cable type	Cable cross-section	Cable termination depending on cable cross-section	Cable terminal type for a given termination/cable	Overvoltage limiter type depending on termination type
Single-core cables in plastic insulation with an Al and Cu phase core, with a return core of copper wires, for a voltage of 20 kV	16-95	CWS 250A 24kV 16-95 M/EGA - straight¹⁾	(CWS C16-95)-set	NONE
	70-150	CWS 250A 24kV 70-150 M/EGA - straight¹⁾	(CWS C70-150)-set
	25-95	CGS 250A 24kV 25-95 M/EGA - angle	(CGS C25-95)-set
	70-150	CGS 250A 24kV 70-150 M/EGA - angle	(CGS C70-150)-set
¹⁾ Possibility of using in TPM Compact swiftchgear.

Cable fittings - CELLPACK terminations - interface C

Cable type	Cable cross-section	Cable termination depending on cable cross-section	Cable terminal type for a given termination/cable	Overvoltage limiter type depending on termination type
Single-core cables in plastic insulation with an Al and Cu phase core, with a return core of copper wires, for a voltage of 20 kV	25-70	CTS 630A 24kV 25-70 EGA - angle	(CTS C25-95)-set	CTKSA 18kV
	95-240	CTS 630A 24kV 95-240 EGA - angle	(CTS C95-240)-set	CTKSA 24kV

Cable fittings - GPH EUROMOLD terminations - interface A

Type and manufacturer of voltage sensor (with which the terminations were tested)	Coupling termination type, option of two cables per phase.	Coupling termination type, option of two cables per phase + limiter	Coupling termination type, option of two cables per phase + sensor.	Type of insulating plug
KAA-VS4 (Nexans)	none	none	none	K150DR-B/G
KAA-VS4 (Nexans)	none	none	none	K150DR-B/G
KAA-VS4 (Nexans)	none	none	none	K150DR-B/G
KAA-VS4 (Nexans)	none	none	none	K150DR-B/G

Cable fittings - GPH EUROMOLD terminations - interface C

Type and manufacturer of voltage sensor (with which the terminations were tested)	Coupling termination type, option of two cables per phase.	Coupling termination type, option of two cables per phase + limiter	Coupling termination type, option of two cables per phase + sensor.	Type of insulating plug
UR-65 (ITR), SMVS UW1002-1 (Zelisko), KEVA24C24(c) (ABB)	K300PB	K300PB	K300PB	K400DR-B/G
SMVS UW1002-3 (Zelisko), KEVA24C24(c) (ABB)	K800PB and K804PB	K800PB and K804PB	K800PB and K804PB	K400DR-B/G
SMVS UW1002-3 (Zelisko)	K800PB and K804PB	K800PB and K804PB	K800PB and K804PB	K400DR-B/G
SMVS UW1001 (Zelisko), PLUGSENS (Arteche), KEVA24C10(c) (ABB)	K400TB+K400CP or K440PB	K400TB+K400CP or K440PB	K400TB+K400CP or K440PB	K400DR-B/G
SMVS UW1001 (Zelisko), PLUGSENS (Arteche), KEVA24C10(c) (ABB)	K400TB+K400CP or K440PB	K400TB+K400CP or K440PB	K400TB+K400CP or K440PB	K400DR-B/G
None	K440PB (only before the termination)	K440PB (only before the termination)	K440PB (only before the termination)	K400DR-B/G

Cable fittings - CELLPACK terminations - interface A

Type and manufacturer of voltage sensor (operating with the terminations)	Coupling termination type, option of two cables per phase.	Coupling termination type, option of two cables per phase + limiter	Coupling termination type, option of two cables per phase + sensor.	Type of insulating plug
NONE	NONE	NONE	NONE	CIK 250A 24kV

Cable fittings - CELLPACK terminations - interface C

Type and manufacturer of voltage sensor (operating with the terminations)	Coupling termination type, option of two cables per phase.	Coupling termination type, option of two cables per phase + limiter	Coupling termination type, option of two cables per phase + sensor.	Type of insulating plug
UR-65 (ITR), KEVA24C25(c) (ABB)	CTKS 630A 24kV 25-70 EGA	on request	on request	CIK 630A 36kV
UR-65 (ITR), KEVA24C25(c) (ABB)	CTKS 630A 24kV 95-240 EGA	on request	on request	CIK 630A 36kV

Cable fittings - TYCO ELECTRONICS terminations - interface A

Cable type	Rated voltage Uo/U (kV)	Cable cross-section depending on termination type	Termination type straight / angle	Cable terminal type for a given termination/cable	Overvoltage limiter type depending on termination type
Single-core cables in plastic insulation with an Al and Cu phase core, with a return core of copper wires	6/10	16-70	RSSS 525A / RSES 525A	Bolted included	None
	6/10	95	RSSS 525B / RSES 525B
	6/10	95-100	RSSS 525C / RSES 525C
	8,7/15	16-50	RSSS 525A / RSES 525A
	8,7/15	50-95	RSSS 525B / RSES 525B
	8,7/15	70-120	RSSS 525C / RSES 525C
	8,7/15	120-150	RSSS 525D / RSES 525D
	12/20	16	RSSS 525A / RSES 525A
	12/20	25-95	RSSS 525B / RSES 525B
	12/20	70-95	RSSS 525C / RSES 525C
	12/20	70-150	RSSS 525D / RSES 525D

Cable fittings - TYCO ELECTRONICS terminations - interface C

Cable type	Rated voltage Uo/U (kV)	Cable cross-section depending on termination type	Termination type straight / angle	Cable terminal type for a given termination/cable	Overvoltage limiter type depending on termination type
Single-core cables in plastic insulation with an Al and Cu phase core, with a return core of copper wires	6/10	35-95	RSTI-5851	Bolted included	RSTI-CC-68SA**10 - LIMITERS SELECTED INDIVIDUALLY
	6/10	95-240	RSTI-5853
	6/10	185-300	RSTI-5855
	6/10	400	RSTI-3951
	6/10	500	RSTI-3952
	6/10	600	RSTI-3953
	8,7/15 i 12/20	35-70	RSTI-5851
	8,7/15 i 12/20	95-240	RSTI-5852
	8,7/15 i 12/20	185-300	RSTI-5855
	8,7/15 i 12/20	400	RSTI-5951
	8,7/15 i 12/20	500	RSTI-5952
	8,7/15 i 12/20	600	RSTI-5953
	8,7/15 i 12/20	800	RSTI-5954

Cable fittings - TYCO ELECTRONICS terminations - interface C

Type and manufacturer of voltage sensor (with which the terminations were tested)	Type of coupling termination, option of two cables per phase	Type of coupling termination, option of two cables per phase + limiter	Type of coupling termination, option of two cables per phase + sensor	Type of insulating plug
None	None	None	None	None

Cable fittings - TYCO ELECTRONICS terminations - interface A

Type and manufacturer of voltage sensor (with which the terminations were tested)	Type of coupling termination, option of two cables per phase	Type of coupling termination, option of two cables per phase + limiter	Type of coupling termination, option of two cables per phase + sensor	Type of insulating plug
RSTI-VS-24-BP Tyco Electronics SMVS-UW1002-0 Zelisko	RSTI-CC-5851			None
	RSTI-CC-5853
	RSTI-CC-5855
	RSTI-CC-3951*
	RSTI-CC-3952*
	RSTI-CC-3953*
	RSTI-CC-5851
	RSTI-CC-5854
	RSTI-CC-5855
	RSTI-CC-3951*
	RSTI-CC-3952*
	RSTI-CC-3953*
	RSTI-CC-3954*

Approximate dimensions / TPM switchgear connection options

Insulating bushing type C

Main termination

Coupling termination

Overvoltage limiter

Voltage sensor (low power transformer)

Expandable units connection method

The TPM switchgear can be expanded with additional assemblies (on the condition that this was discussed at the pricing and ordering stage). The examples of connection methods were presented on figures below. Detailed information is provided in the Switchgear Operation & Maintenance Manual.

Example 1. TLL+ + LLL+ switchgear top connection

Electrical diagram

Schemat elektryczny rozdzielnicy TPM - Połączenie górne rozdzielnic TLL+ + LLL+

Front view

Widok z frontu rozdzielnicy TPM - Połączenie górne rozdzielnic TLL+ + LLL+

Example 2. TLL+ (l, p) system

Electrical diagram

Schemat elektryczny rozdzielnicy TPM - Układ TLL+ (l, p)

Front view

Widok z frontu rozdzielnicy TPM - Układ TLL+ (l, p)

Top view

Widok z góry rozdzielnicy TPM - Układ TLL+ (l, p)

Example 3. TLL+(p) + LLL+(l) switchgears side connection

Electrical diagram

Schemat elektryczny rozdzielnicy TPM - Połączenie boczne rozdzielnic TLL+ (p)+TLL+ (l)

Front view

Widok z frontu rozdzielnicy TPM - Połączenie boczne rozdzielnic TLL+ (p)+TLL+ (l)

TPM switchgear side views and dimensions

1) - cover for TPM switchgear in expandable version - top connection,
2) - cover for TPM switchgear in expandable version - side connection,
3) - front panel depth of 125 mm used only in case of:
Double termination with a voltage sensor;
Termination with overvoltage limiter and voltage sensor;
K400LB termination with a 400PB overvoltage limiter.
4) - front panel depth in case of use termination with with overvoltage limiter,
5) - front panel depth in case of use termination with with overvoltage limiter and voltage sensor.

TPM - typical configurations

TL / LT configuration (transformer feeder, line feeder)