RELF, RELF EX

MV-type metal-clad air insulated switchgear. Two-part, interval metal enclosure provides reliability in power distribution for demanding facilities.

Technical description

Rozdzielnica RelfThe catalogue presents RELF medium voltage switchgears and RELF ex type:

  • in air insulation (AIS- Air Insulated Switchgear),
  • in metal housing,
  • four compartment units,
  • double-module,
  • single busbar system,
  • rated voltage up to 40,5kV,
  • adapted for use in internal installations.

Characteristics of the switchgear

The switchgear is designed to operate in distribution transformer stations in industrial sites which generate, distribute and consume electricity.

The switchgear complies with the requirements of PN-EN 62271-200, PN-EN 62271-1 and GOST, provides IP4X degree of protection for external enclosures and IP2X for internal partitions in accordance with PN-EN 60529. It is designed to work in normal conditions defined by the PN-EN 62271-1 standard.

The switchgear is designed to assure safety during normal operation, inspection and handling.

The switchgear cubicle is of a frameless construction, made of galvanized steel sheets and fixed with rivets. It is in the form of a multi-compartment cabinet, with walls and partitions that form a self-supporting structure. In the switchgear cabinet there are separate compartments containing: connections, busbars, an apparatus with a withdrawable module and an auxiliary circuitry compartment.

The cabinet’s door and side shields of the outermost bays (back shields for wall mounted cubicles) are powder coated in grey (RAL 7032) or in another color at the request of the customer.

Available bay types
The switchgear cubicle can be composed of bays, which perform different functions.
Available bays:

  • power supply/ receiving,
  • coupling,
  • metering with the possibility to ground busbars,
  • circuit breaker.

The switchgear cubicle withdrawable module can be equipped with a circuit breaker, contactor, short-circuiting switch, a set of voltage transformers with switch-fuse units or a fuse block. The withdrawable module can be in one of two positions: operation or test/opening in isolation.

Characteristic features of the switchgear:

  • air insulated,
  • construction made of galvanized steel sheets, fixed with rivets,
  • continuity of operation during service – LSC2B (three compartments of the primary circuit),
  • high operator safety,
  • internal arcing class IAC AFLR,
  • interlocks and protection against performing faulty switching operations,
  • possibility of fitting to a wall attachment (access to cable connection solely from the front side of the cabinet),
  • wide variety of bays and apparatuses,
  • possibility to expand the switchgear cubicle with additional bays,
  • possibility to change the bay without the need to draw back adjacent bays,
  • simple operation.

The switchgear cubicle ensures a high level of operation safety thanks to:

  • internal arc resistant housing,
  • mechanical interlocks preventing incorrect switching procedures and door opening,
  • in/out maneuvering of the withdrawable module when the door is closed,
  • the circuit breaker spring can be mechanically armed when the appliance compartment door is closed, (optional)
  • application of compartments with partitions that ensure protection class IP2X,
  • possibility of visual assesment of switching operations through inspection windows,
  • use of explosion relief panels, which reduce the increase of pressure in case of arc fault inside the cubicle,
  • possibility to use the outlet channels to conduct hot gases, which arise inside the cubicle during arc fault, into the room where the switchgear is installed,
  • voltage indication in individual bays.

Basic technical data

Compliance with standards:
Switchgear type RELF meets the requirements of the following standards:

  • PN-EN62271-1 - “High Voltage Switchgear and Controlgear – Part 1: Common specifications”,
  • PN-EN 62271-200 - “High Voltage Switchgear and Controlgear – Part 200: Altering current 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: Alternating current circuit breakers”,
  • PN-EN 62271-102 - “High Voltage Switchgear and Controlgear – Part 102: High voltage altering current disconnectors and grounding switches”,
  • PN-EN 62271-103 - “High Voltage Switchgear and Controlgear – Part 103: Disconnectors with rated voltages above 1 kV and up to and including 52 kV”,
  • PN-EN 62271-105 - “High Voltage Switchgear and Controlgear – Part 105: Alternating current switch-fuse combinations”.

Certified by the Electrotechnical Institute.

Technical specifications:
 
RELF 12
RELF 17,5
RELF 24
RELF 36
RELF ex
Rated voltage [kV]
12
17,5
24
35; 40,5*
12 / 17,5
Rated continuous current of main busbars and incoming bay [A]
630 - 4000
630 - 2500
630 - 2500
630 - 1600
630 - 25001)
Rated power frequency withstand voltage 50 Hz [kV]
28; 42*
38
50
95;
95,5(5min)
/95(1min)
28 (42*); 38
Rated lightning impulse withstand voltage [kV]
75
95
125
190
75; 95
Rated frequency [Hz]
50
Rated short-time withstand current [kA/3s]
up to 40
up to 31,5
up to 31,5
up to 25
(up to 31,5/1s)
up to 31,5
Rated peak current strength [kA]
up to 100
up to 80
up to 80
63/80
up to 80
Internal arc resistance [kA]
up to 31,5/1s
up to 40/05s
up to 31,5/1s
up to 31,5/1s
up to 25/1s
up to 31,5/1s
Degree of protection
up to IP4X (IP3X for 4000A)
Cubicle height [mm]
21502)
21502)
22502)
2250
2250
Cubicle width [mm]
650/8003)/10003)
800/1000
800/1000
1300
650/800/1000
Cubicle depth [mm]
1575/1675
1575/1675
1600/1688/1725
2035
1375/1388
Compliance with standards
PN-EN 62271-200; PN-EN 62271-1, *GOST 1516.3-96; *GOST 14693-90
Service conditions:
Ambient temperature Relative humidity
- short-time maximum+40oC
- maximum daily average95%
- maximum daily average +35oC
- maximum monthly average 90%
- maximum yearly average +20oC
- maximum daily average of vapour pressure 2,2kPa
- lowest prolonged-25oC4)
- maximum monthly average of vapour pressure 1,8kPa
Atmosphere in installation location
no significant salt, steam, dust, smoke, flammable or corrosive gases pollution, and no icing, frost or dew
Installation altitude
up to 1000 meters above sea level5)
Vibrations
vibrations caused by external factors or earthquakes are not taken into account

Notice:

  1. - apply to 3150A,
  2. - height of the presented cubicle includes 400 mm high auxiliary cable box. Detailed information presenting dimensions of the auxiliary cable boxes are shown in picture 3,
  3. - width of the cubicles manufactured in compliance with GOST standards,
  4. - unless the manufacturer of the control-metering and protection unit states otherwise,
  5. - if the mounting altitude of the switchgear is higher than 1000 meters above sea level, the level of the switchgear insulation should be adjusted with an indicator compliant to 2.2.1 paragraph of the PN-EN 62271-1 standard.

Switchgear design

Design

RELF switchgear bays are constructed as a cabinet divided into four individual functional compartments:

  1. busbar compartment (primary circuits),
  2. switching compartment (primary circuits),
  3. cable connection compartment (primary circuits),
  4. auxiliary circuits compartment (low voltage circuits).
Konstrukcja rozdzielnicy RELF
Konstrukcja rozdzielnicy RELF 36
Konstrukcja rozdzielnicy RELF ex

The cubicle of the switchgear is made from folded sheet steel, fixed with rivets, without welding. Walls and partitions form a self- standing construction. Hot galvanized steel sheet is used in the construction of cubicles.

Solid round head steel rivets are used to secure the structural elements. Functional compartments are separated using internal vertical and horizontal partitions. Internal partitions are fastened to the side walls in order to reinforce and stabilize the cubicle. Additionally, two-part side covers, made of sheet steel, are screwed to the external walls of the outermost switchgear fields.

Switchgears can be produced as free-standing or wall-mounted units. The front partition between the dividing door of the switching compartment and the door of the connection compartment as well as the horizontal partition between these compartments are all removable1), which considerably facilitates service operations.

1) does not apply to RELF 36

Internal partitions allow safe access to switching and cable connection compartments even when busbars are energized.

In accordance with LSC (Loss of Service Continuity) classification, the switchgear meets the requirements of category LSC2B. This requirement is met by three-compartment switchgears while the withdrawable module is set in the open position.

The primary circuits compartment doors are made from black sheet steel. The door is equipped with hinges and locks which can withstand stress comparable to an explosion. The hinges allow the door to be opened to an angle of about 135O (170O with regard to RELF 36).

The upper and lower edges of the door were reinforced by suitably shaped and welded reinforcing profiles.

The switching compartment door is equipped with an inspection window for the visual assessment of the withdrawable module position and switching operations.

The door’s construction enables the circuit breaker (in the operation position) to be opened mechanically while the door is closed.

 

Explosion relief panels

All main circuit compartments have explosion relief panels at the top. Their function is to evacuate excessive pressure built up inside the compartment in case of internal arc fault.

A rapid pressure increase inside the switchgear’s compartment causes failure of plastic bolts and the opening of explosion relief panels, which can work together with the limit switches installed at the top of the switchgear. The limit switches, which are managed by opened relief panels, send an impulse that triggers the power switch. It allows reduction of the effects of the arc fault which occurred inside the cabinet’s compartment.

A withdrawable module is a system composed of the racking system and, depending on the function of the bay: a circuit breaker, contactors, a set of voltage transformers with fuses or short-circuiting block. The racking system mechanically combines the withdrawable module with the switchgear bay. Its frame is joined with the bay by double-sided locking in cutouts in the guide rail.

The withdrawable module’s racking system unit is moved between operating and test/open position by means of a crank mechanism, which is hand-operated with a crank or by an electric drive when the door is closed. The operating and test/open position is signaled by position indicators when the mechanism is in the exact position.

Moving partitions in the device’s compartment are presented in the apparatus compartment description.

 

Compartments of the distribution bays

The busbar compartment is inaccessible during its normal operation. In order to perform service operations, access to the busbar is possible from the top of the cubicle after removing the explosion relief panels (or after removing the partition from the apparatus compartment - for RELF 36). It is closed on both sides by gland plates made from non-magnetic steel sheeting. These plates prevent further damage of the adjacent bays in case of internal arcing in the busbar compartment.

Gland plates and isolator bushings are elements which support the busbars. From the main busbars, outgoing busbars branch off and enter the isolator bushings that separate the busbars compartment from the switching compartment.

 

The switching compartment is accessible after opening its door in the interlock control mode. In the switching compartment are located the withdrawable module and all the elements necessary for its cooperation with the distribution bay, including: withdrawable module guide rails, movable partitions, isolator bushings incorporating inter-compartment contacts, door interlock elements, grounding switch interlock and control circuitry socket.

Isolator bushings are mounted on the plate which separates the switching compartment from connection and primary busbars. Outgoing busbars and inter-compartment contacts are placed in isolators.

Movable partitions with locking mechanisms are installed in the switching compartment. They are used to separate the compartment space from fixed contacts, which can be energized when the withdrawable module is in test/open position or isolation position. After removing the withdrawable module from operating or test/open position, they cover the openings in the isolation bushings and close the access to the energised inter-compartment contacts, fulfilling the IP2X degree of protection. Between these contacts and the closed partition there is a safe isolation space.

When the withdrawable module changes from test/open to operating position it causes the movable partitions to open and expose fixed contacts, making it possible to connect the circuit breaker contacts.

It is possible to see the mechanical indicators of the circuit breaker position and if the operating mechanism is armed via the inspection window.

The connection compartment is designed to connect cables or busbars. It is accessible after opening the compartment front door (if the cubicle is constructed as a wall mounted switchgear) or front and back doors (if the cubicle is constructed as a free-standing switchgear) in the interlock control mode. 1) In this compartment there are current transformers and a grounding switch, and depending on customer’s needs: voltage transformers 2), Ferranti current transformers, and surge arresters.

Voltage transformers are installed in the front part of the connection compartment.

The grounding switch is equipped with a manual operating mechanism or manual and engine operating mechanism. Its position is signaled by a position indicator.

The compartment bottom is closed with a split floor cover which also performs the function of a gland plate. Plate openings are covered with rubber glands. Cables are fixed with cable clamps installed on supports.

The auxiliary circuitry compartment (low voltage) is in the shape of a control cabinet and is completely separated from the high voltage zone of the switchgear. The cubicle has its own metal housing and is prefabricated regardless of if the current part of the switchgear is high. It can be equipped with apparatuses at a separate workstation and then fixed to the switchgear cubicle.

The cubicle is designed and installed containing: protection device assemblies, metering apparatus, and control gear and automation systems.

It is installed at the top of the switchgear, above the switching compartment. In the walls of the cubicle there are a number of openings for cable trays, cable glands and low voltage leads. These openings are covered with plates which can be drilled according to design. The perforated assembly plate fixed to the rear wall of the cabinet has been designed in order to facilitate the installation of the apparatus. The apparatus can be also fixed on the side walls.

Design and cubicle adaptation to individual customer needs is possible after consultation with the manufacturer.

 

Busbars
Primary busbars

A single, three-phase delta busbar system is used in the switchgear. It is installed in a separate compartment.

The primary busbars are supported by distribution busbars which come out of the supporting isolator bushings and on isolator bushings located in the lateral partitions.

Busbar cross sections are selected relative to the switchgear rated current.

 

Insulating components

Switchgear bushing isolators are made of epoxy resin. In the connection compartment, the primary busbars are supported by a support insulator.

In order to support the primary busbars and lead them through switchgear bays, isolator bushings are installed on the gland plates of the bay side walls.

The bushing is composed of a supporting isolator bushing in the partition between the switching compartment and busbar compartment and connection compartment.

 

Protective grounding

There is one grounding cable designed as a copper grounding busbar in each cubicle, with cross section dimensions 40x5 mm or 40x10 mm, located at the bottom of the cubicle. These bubars are connected by bridges to form grounding system. The grounding system has terminals on the left and right sides of the switchgear. They are used to connect the switchgear to the site grounding system.

 

Cable connections

Connection compartments are designed to lead single or multiple core cables in synthetic insulation.

 

1) In the RELF 36 type, the cable connection compartment is accessible after opening the cubicle door and removing the switching compartment partition.
2) Does not apply to RELF 36 type.

Protection and interlocks system

After consultation with the manufacturer, the switchgear cubicle can be equipped with mechanical and electric interlocks, which are required by the standards and improve the operator’s safety:
Mechanical interlocks:

  1. Prevent sliding in or out of the withdrawable module from the in/out operating position when the circuit breaker is closed (standard requirement),
  2. allow closing and opening of the circuit breaker only in its test/open operating position (standard requirement),
  3. allow closing of the grounding switch only in its test/open or withdrawable module isolation position,
  4. prevent switching the position of the withdrawable module from the test/open to operating position if the grounding switch is closed,
  5. prevent opening the switching compartment door if the withdrawable module is in the operating or intermediate position,
  6. prevent opening the cable compartment door (or RELF 36 type bay door) if grounding switch is open,
  7. allow changing the position of withdrawable module only when it is locked in a bay,
  8. prevent changing the position of withdrawable module from the test/open to operation position when the compartment door is open,
  9. prevent changing the position of the circuit breaker from the test/open position to the operating position until the control cable power unit of the breaker is connected with the breaker,
  10. prevent changing the breaker’s withdrawable module from the test/open to isolation position until the control cable power unit of the breaker is in the open position,
  11. a service racking system designed to transport the withdrawable modules can be equipped with a coupling mechanism, which prevents changing the position of the racking system even when its wheels are unlocked,
  12. a service racking system, which transports the withdrawable modules, can be constructed to allow changing the position of the withdrawable module from the racking system to the bay only after their mechanical coupling,
  13. a service racking system, which transports the withdrawable modules, can be constructed to make the expansion of the bay possible only after locking the withdrawable module in the bay or by the racking system,
  14. allow halting of the operating mechanism for moving partitions which cover fixed contacts in the switching compartment,
  15. allow locking access to the grounding switch operating mechanism slide.

The cable connection compartment door lock is constructed to close and lock the door even if it has been opened, and the grounding switch has been changed to the open position. After doing this, the lock prevents opening the door again until the next grounding operation.

After consultation with the manufacturer it is possible to use additional key interlocks.

 

Electrical interlocks:

  1. prevent closing the circuit breaker if its auxiliary circuits are not powered; only mechanical opening of the circuit breaker is possible(standard requirement),
  2. prevent switching the withdrawable module to the operating position without power supply to the control circuits,
  3. prevent access to the grounding switch operating mechanism when closing of the grounding switch is additionally affected by, for example, primary busbar grounding switch can be closed only when the withdrawable modules in the particular section are in the open position,
  4. prevent access to the operating mechanism of the withdrawable module when changing its position is additionally affected.

Interlocks, except these required by applicable standards, are designed to fit to a particular project.

After consultation with the switchgear’s manufacturer, it is possible to install additional interlocks, which operate based on miniature connectors and electromagnetic locks.

The door design allows them to be unlocked in an emergency and the compartment to be accessed when needed.

Switchgear equipment

Switching apparatus

The switchgear can be equipped with VB-4W (ZPUE) vacuum circuit breakers, VD4 (ABB), Evolis (Schneider), 3AH or SION (Siemens), TM2C (Tavrida); gas insulated circuit breakers HD4 (ABB), LF (Schneider Electric); contactors VSC (ABB) and Rollarc (Schneider Electric). It is possible to use another apparatus after prior consultation with the manufacturer.

A fast grounding switch with an impulse operating mechanism is applied to provide safe operation in case of its accidental short circuit.

 

Metering apparatus

Current and voltage transformers from different manufacturers are used for metering.

Bay voltage indication utilizes capacitive insulators or transformers with voltage dividers and SN type voltage indicators (ZPUE).

 

Protection apparatus

The switchgear can be equipped with a low voltage apparatus provided by any manufacturer according to the individual needs of the customer.

It is also possible to install any digital protection which protects medium voltage circuits.

An internal arc protection system can be installed in the switchgear. It finds the internal arc by detecting the flash and when current or voltage limits are exceeded inside the protected switchgear. When these two events occur simultaneously, the system is activated and within a certain period of time (less than 10 ms) the impulse is sent and triggers the circuit breaker.

Primary and auxiliary circuit diagrams and automation system

Primary circuits

Structural diagrams of exemplary primary circuits are shown in Figure 2. Depending on the bay type, different equipment in the connection compartment is applied. Alternative solutions can be implemented after prior consultation with the manufacturer.

 

Auxiliary circuits

Low voltage auxiliary circuits include: protection, metering, control, automation and signaling systems. For these components, there is an auxiliary circuitry cabinet located at the front, top part of the switching compartment.

Dimensions of the cabinet and optional apparatus arrangement are presented in pictures 3 and 4.

Diagrams of exemplary internal connections, and primary and auxiliary apparatus for a typical switchgear cubicle, can be obtained by contacting the switchgear manufacturer.

 

Switchgear automatic control

The switchgear is designed to operate in an integrated control, visualization and data collection system. That is why the cubicle is equipped with digital protection relays (with possible digital communication) and automatic control systems. The switchgear can then operate in primary control systems and automated systems.

Packaging, transport and installation

Packaging
For switchgears RELF type, three packaging methods are used:

  1. standard packaging – switchgear cubicle is placed on a pallet and wrapped with bubble wrap followed by shrink wrap,
  2. packaging in boxes – switchgear cubicles are packaged as described above and put into boxes,
  3. maritime transport packaging – switchgear cubicles with desiccant placed inside are inserted in barrier foil and the air is evacuated from the packaging. The switchgears cubicles, protected as described above, are transported on pallets or in boxes.

 

Transport

Switchgears are transported as single cubicles. Transport to the room in which the switchgear is to be installed can be done using a gantry crane, forklift, or on rollers.

To lift the switchgear with a gantry crane, the cubicle is equipped with lifting lugs. The angle of the hook ropes should not exceed 120o. Attaching ropes directly to the cubicle structure is forbidden.

To lift the switchgear with a forklift, the cubicle is placed on a transporting pallet.

During both transport and installation of the switchgear cubicle, special care should be taken to not to damage the paintwork and steel sheet enclosures.

Primary apparatus, such as circuit breakers, contactors, and withdrawable modules, and low voltage devices sensitive to vibrations, are transported separately in the manufacturers’ original packages.

 

Switchgear installation

Installation and external cable and busbar connection depend on the structure of the location where the switchgear cubicle will be placed. These connections should be completed according to the instructions established by the manufacturer of the switchgear cubicle.

Switchgear cubicles can be installed directly on the floor, on a special foundation frame fixed to the floor, or on a steel or concrete construction of the facility. Switchgear cubicles must be installed horizontally and fixed to the floor, regardless of the type of flooring.

In Figures 5a, b, c there is presented the position of the switchgear in the room. The X dimension depends on the switchgear’s mounting method:

  • for wall mounted, the distance between the switchgear and wall is at least 100 mm,
  • for switchgear cubicles with a width of 1000 mm, it is recommended to keep the X distance of at least 1000 mm, to allow the door to be fully opened.

Taking into consideration the installation technology, it is recommended that the Y room dimension be at least 1000 mm bigger than the total length of the switchgear cubicle.

The minimal recommended height of the door in room A, for the switchgear with a 400 mm high auxiliary cable box is 2500 mm, and for a 600 mm box, is 2700 mm.

Standard equipment provided with the switchgear cubicle

Standard equipment provided with the switchgear cubicle
Each switchgear cubicle is equipped with:

  • connectors to bind together all transport assemblies,
  • withdrawable module operating crank,
  • grounding switch operating crank,
  • withdrawable module racking system (except RELF 36),
  • door keys for the cubicle.

Switchgear cubicle documents:

  • declaration of conformity,
  • switchgear manual,
  • technical documentation and warranty cards for installed equipment,
  • building documentation for switchgear cubicle,
  • warranty card.

Figures

List of figures

List of figures:

Figure 1a - RELF bay equipment
Figure 1b - RELF 36 bay equipment
Figure 1c - RELF ex bay equipment
Figure 2a - Structural diagrams of RELF and RELF ex primary circuits
Figure 2b - Structural diagrams of RELF 36 primary circuits
Figure 3a - RELF bay auxiliary circuitry cabinet
Figure 3b - RELF 36 bay auxiliary circuitry cabinet
Figure 3c - RELF ex bay auxiliary circuitry cabinet
Figure 4a - Exemplary apparatus layout in auxiliary circuitry compartment in RELF bays
Figure 4b - Exemplary apparatus layout in auxiliary circuitry compartment in RELF ex bays
Figure 5a - RELF switchgear cubicle positioning
Figure 5b - RELF 36 switchgear cubicle positioning
Figure 5c - RELF ex switchgear cubicle positioning
Figure 6a - Exemplary foundation base dimensions of the cubicle and flooring fixing holes for RELF bays
Figure 6b - Exemplary foundation base dimensions of the cubicle and flooring fixing holes for RELF 36 bays
Figure 6c - Exemplary foundation base dimensions of the cubicle and flooring fixing holes for RELF ex bays
Figure 7a - Support/ assembly frame of the RELF switchgear cubicle
Figure 7b - Support/ assembly frame of the RELF ex switchgear cubicle
Figure 8 - Switchgear cubicle fixing to the base flooring

Figure 1a - RELF bay equipment

Wyposażenie pola RELF

Wyposażenie pola RELF
  1. primary apparatus: circuit-breaker, contactor
  2. current transformers
  3. grounding switch
  4. voltage transformers
  5. supporting isolator bushings
  6. isolator bushings
  7. surge arresters
  8. support insulators (capacitive)
  9. primary busbars
  10. electrical connections busbars
  11. ferranti current transformer
  12. grounding busbar
  13. movable partitions
  14. cable tray (optional)
  15. explosion relief panels

Figure 1b – RELF 36 bay equipment

wyposazenie pola 1

wyposazenie pola 2
  1. primary apparatus: circuit-breaker
  2. current transformers
  3. grounding switch
  4. surge arresters
  5. supporting isolator bushings
  6. isolator bushings
  7. primary busbars
  8. electrical connections busbars
  9. grounding busbar
  10. movable partitions mechanism
  11. explosion relief panels
  12. protection relay

Figure 1c – RELF ex bay equipment

Wyposażenie pola RELF ex

Wyposażenie pola RELF ex
  1. drawout circuit breaker
  2. grounding switch
  3. current transformers
  4. voltage transformers (optional)
  5. protection system
  6. electrical connections busbars
  7. isolator bushings
  8. supporting isolator bushings
  9. explosion relief panels
  10. control cabinet
  11. ferranti current transformer
  12. surge arrester

Figure 2a - Structural diagrams of RELF and RELF ex primary circuits

Schematy strukturalne obwodów głównych RELF i RELF ex

Figure 2b - Structural diagrams of RELF 36 primary circuits

Schematy strukturalne obwodów głównych RELF 36

Figure 3a - RELF bay auxiliary circuitry cabinet

Szafka obwodów pomocniczych pola RELF

 

Szafka obwodów pomocniczych pola RELF

 

Dimensions [mm]  
H
600
600
600
400
400
400
S
995
795
645
995
795
645
H1
500
500
500
350
350
350
S1
900
700
550
900
700
550

Figure 3b - RELF 36 bay auxiliary circuitry cabinet

Szafka obwodów pomocniczych pola RELF 36

 

Szafka obwodów pomocniczych pola RELF 36

Figure 3c - RELF ex bay auxiliary circuitry cabinet

Szafka obwodów pomocniczych pola RELF ex

 

Szafka obwodów pomocniczych pola RELF ex

Figure 4a - Exemplary apparatus layout in auxiliary circuitry compartment in RELF bays

Przykład rozmieszczenia aparatury w przedziale obwodów pomocniczych w polach RELF

Figure 4b - Exemplary apparatus layout in auxiliary circuitry compartment in RELF ex bays

Przykład rozmieszczenia aparatury w przedziale obwodów pomocniczych w polach RELF ex

Figure 5a - ELF switchgear cubicle positioning

Ustawienie rozdzielnicy RELF
Ustawienie rozdzielnicy RELF

Notice:

In case of specific requirements that affect the switchgear cubicle dimensions, please contact the switchgear manufacturer.

Figure 5b - RELF 36 switchgear cubicle positioning

Ustawienie rozdzielnicy RELF 36
Ustawienie rozdzielnicy RELF 36
Notice:
In case of specific requirements that affect the switchgear cubicle dimensions, please contact the switchgear manufacturer.

Figure 5c - RELF ex switchgear cubicle positioning

Ustawienie rozdzielnicy RELF ex
Ustawienie rozdzielnicy RELF ex

 

 

Notice:
In case of specific requirements that affect the switchgear cubicle dimensions, please contact the switchgear manufacturer.

Figure 6a - Exemplary foundation base dimensions of the cubicle and flooring fixing holes for RELF bays

Ceiling hole layout for cubicles with width of 1000 mm
RELF - Otworowanie stropu dla szaf o szerokości 1000 mm
Ceiling hole layout for cubicles with width of 650 mm
RELF - Otworowanie stropu dla szaf o szerokości 650 mm

Figure 6b - Exemplary foundation base dimensions of the cubicle and flooring fixing holes for RELF 36 bays

Przykładowe wymiary powierzchni podstaw szaf i otworowania posadzki dla pól RELF 36

Figure 6c - Exemplary foundation base dimensions of the cubicle and flooring fixing holes for RELF ex bays

Przykładowe wymiary powierzchni podstaw szaf i otworowania posadzki dla pól RELF ex

 

Dimensions [mm]  
H
650
800
1000
G1
310 mm - for 2 cable / phase
560 mm - for 4 cable / phase

Figure 7a - Support/ assembly frame of the RELF switchgear cubicle

Rama nośna/montażowa rozdzielnicy RELF

 

Dimensions [mm]
G
1500
1550
1563
1600
1650
S
650
800
650
800
1000
800
1000
1000
S1
400
500
400
500
700
500
700
700

Figure 7b - Support/ assembly frame of the RELF ex switchgear cubicle

Rama nośna/montażowa rozdzielnicy RELF ex

 

Dimensions [mm]
S
400
550
750
G1
650
800
1000

Figure 8 - Switchgear cubicle fixing to the base flooring

RELF 12 / RELF 17,5 / RELFex
Mocowanie rozdzielnicy do podłoża RELF 12 / RELF 17,5 / RELFex
RELF 24
Mocowanie rozdzielnicy do podłoża RELF 24
RELF 36
Mocowanie rozdzielnicy do podłoża RELF 36

Exemplary technical sheets

RELF - marking sheets

RELF
1. Data sheet 1.1 Feeder bay with circuit breaker
2. Data sheet 1.2 Feeder bay with disconnector
3. Data sheet 1.3 Feeder bay with contactor
4. Data sheet 1.4 Coupler bay – cubicle with circuit breaker
5. Data sheet 1.5 Coupler bay – cubicle with a short-circuiting switch
6. Data sheet 1.6 Metering bay – withdrawable module with voltage transformers

* These data sheets are exemplary solutions which can be changed.

RELF 36 - marking sheets

RELF 36
1. Data sheet 2.1 Feeder bay with circuit breaker
2. Data sheet 2.2 Coupler bay – cubicle with circuit breaker
3. Data sheet 2.3 Coupler bay – cubicle with a short-circuiting switch
4. Data sheet 2.4 Metering bay – withdrawable module with voltage transformers

* These data sheets are exemplary solutions which can be changed.

RELF ex - marking sheets

RELF ex
1. Data sheet 3.1 Feeder bay with circuit breaker
2. Data sheet 3.2 Feeder bay with disconnector
3. Data sheet 3.3 Coupler bay – cubicle with circuit breaker
4 Data sheet 3.4 Coupler bay – cubicle with a short-circuiting switch
5. Data sheet 3.5 Metering bay – withdrawable module with voltage transformers

* These data sheets are exemplary solutions which can be changed.

Data sheet 1.1 - RELF - Feeder bay with circuit breaker

Structural diagram

Schemat strukturalny rozdzielnicy RELF - Pole liniowe z wyłącznikiem

Front view

Elewacja rozdzielnicy RELF - Pole liniowe z wyłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF - Pole liniowe z wyłącznikiem

Specifications:  
Rated voltage [kV] 12/17,5/24
Rated power frequency withstand voltage [kV] 28/38/50
Rated lighting impulse withstand voltage [kV] 75/95/125
Rated frequency [Hz] 50
Rated continuous current [A] 630-4000
Rated continuous current of primary busbars [A] 630-4000
Rated short-time withstand current [kA/3s] up to 40
Rated peak current strength [kA] up to 100
Internal arc resistance [kA/1s] up to 31,5 and 40/0,5s
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q1 VB-4W (ZPUE); VD4/HD4 (ABB);SION/3AH (Siemens);
Evolis/LF (Schneider Electric), TM2C (Tavrida)
Current transformer T1 different manufacturers
Grounding switch Q3 fast with impulse operating mechanism
Weight [kg] 825-1460
Notice:
It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 1.2 - RELF - Feeder bay with disconnector

Structural diagram

Schemat strukturalny rozdzielnicy RELF - Pole liniowe z rozłącznikiem

Front view

Elewacja rozdzielnicy RELF - Pole liniowe z rozłącznikie

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF - Pole liniowe z rozłącznikie

Specifications:  
Rated voltage [kV] 12/17,5/24
Rated power frequency withstand voltage [kV] 28/38/50
Rated lighting impulse withstand voltage [kV] 75/95/125
Rated frequency [Hz] 50
Rated continuous current [A] 400-1250
Rated continuous current of primary busbars [A] 630-4000
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q2 NALF (ABB); OMB (ZWAE)
Grounding switch Q3 fast with impulse operating mechanism
Weight [kg] 670-1000
Notice:
It is possible to configure the functionality and equipment of the bay (type/manufacturer).

Data sheet 1.3 - RELF - Feeder bay with contactor

Structural diagram

Schemat strukturalny rozdzielnicy RELF - Pole liniowe odpływowe ze stycznikiem

Front view

Elewacja rozdzielnicy RELF - Pole liniowe odpływowe ze stycznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF - Pole liniowe odpływowe ze stycznikiem

Specifications:  
Rated voltage [kV] 12
Rated power frequency withstand voltage [kV] 28
Rated lighting impulse withstand voltage [kV] 75
Rated frequency [Hz] 50
Rated continuous current [A] 400-630
Rated continuous current of primary busbars [A] 630-4000
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Contactor Q2 VSC (ABB), Rollarc (Schneider Electric)
Current transformer T1 different manufacturers
Grounding switch Q3 Fast with impulse operating mechanism
Weight [kg] 825
Notice:
It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 1.4 - RELF - Coupler bay – cubicle with circuit breaker

Structural diagram

Schemat strukturalny rozdzielnicy RELF - Pole sprzęgłowe - szafa z wyłącznikiem

Front view

Elewacja rozdzielnicy RELF - Pole sprzęgłowe - szafa z wyłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF - Pole sprzęgłowe - szafa z wyłącznikiem

Specifications:  
Rated voltage [kV] 12/17,5/24
Rated power frequency withstand voltage [kV] 28/38/50
Rated lighting impulse withstand voltage [kV] 75/95/125
Rated frequency [Hz] 50
Rated continuous current [A] 630-4000
Rated continuous current of primary busbars [A] 630-4000
Rated short-time withstand current [kA/3s] up to 40
Rated peak current strength [kA] up to 100
Internal arc resistance [kA/1s] up to 31,5 and 40/0,5s
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q1 VB-4W (ZPUE); VD4/HD4 (ABB);SION/3AH (Siemens);
Evolis/LF (Schneider Electric), TM2C (Tavrida)
Current transformer T1 different manufacturers
Grounding switch Q3 fast with impulse operating mechanism
Weight [kg] 825-1425
Notice:
It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 1.5 - RELF - Coupler bay – cubicle with a short-circuiting switch

Structural diagram

Schemat strukturalny rozdzielnicy RELF - Pole sprzęgłowe - szafa ze zwieraczem

Front view

Elewacja rozdzielnicy RELF - Pole sprzęgłowe - szafa ze zwieraczem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF - Pole sprzęgłowe - szafa ze zwieraczem

Specifications:  
Rated voltage [kV] 12/17,5/24
Rated power frequency withstand voltage [kV] 28/38/50
Rated lighting impulse withstand voltage [kV] 75/95/125
Rated frequency [Hz] 50
Rated continuous current [A] 630-4000
Rated continuous current of primary busbars [A] 630-4000
Rated short-time withstand current [kA/3s] up to 40
Rated peak current strength [kA] up to 100
Internal arc resistance [kA/1s] up to 31,5 and 40/0,5s
Degree of protection up to IP4X
Accessories:  
Sphincter Q4 ZPUE production
Weight [kg] 825-1425
Notice:
It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 1.6 - RELF - Metering bay – withdrawable module with voltage transformers

Structural diagram

Schemat strukturalny rozdzielnicy RELF - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Front view

Elewacja rozdzielnicy RELF - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Specifications:  
Rated voltage [kV] 12/17,5/24
Rated power frequency withstand voltage [kV] 28/38/50
Rated lighting impulse withstand voltage [kV] 75/95/125
Rated frequency [Hz] 50
Rated continuous current of primary busbars [A] 630-4000
Rated short-time withstand current [kA/3s] up to 40
Rated peak current strength [kA] up to 100
Internal arc resistance [kA/1s] up to 31,5 and 40/0,5s
Degree of protection up to IP4X
Accessories:  
Movable module   withdrawable module with current transformers
Current transformer T2 different manufacturers
Grounding switch Q3 fast with impulse operating mechanism
Weight [kg] 750-1000
Notice:
It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 2.1 - RELF 36 - Feeder bay with circuit breaker

Structural diagram

Schemat strukturalny rozdzielnicy RELF 36 - Pole liniowe z wyłącznikiem

Front view

Elewacja rozdzielnicy RELF 36 - Pole liniowe z wyłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF 36 - Pole liniowe z wyłącznikiem

Specifications:  
Rated voltage [kV] 36/40,5*
Rated power frequency withstand voltage [kV] 95/85,5(5min)/95(1min)*
Rated lighting impulse withstand voltage [kV] 190
Rated frequency [Hz] 50
Rated continuous current [A] up to 1600
Rated continuous current of primary busbars [A] up to 1600
Rated short-time withstand current [kA] up to 25(3s) and 31,5(1s)
Rated peak current strength [kA] 63/80
Internal arc resistance [kA/1s] up to 25
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q1 VD4 (ABB)
Current transformer T1 TPU (ABB)
Grounding switch Q3 EK6 (ABB)
Surge arrester F1 GXE51 (ABB)
Weight [kg] ~1750
* - according to GOST standards
Notice: It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 2.2 - RELF 36 - Coupler bay – cubicle with circuit breaker

Structural diagram

Schemat strukturalny rozdzielnicy RELF 36 -Pole sprzęgłowe - szafa z wyłącznikiem

Front view

Elewacja rozdzielnicy RELF 36 -Pole sprzęgłowe - szafa z wyłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF 36 -Pole sprzęgłowe - szafa z wyłącznikiem

Specifications:  
Rated voltage [kV] 36/40,5*
Rated power frequency withstand voltage [kV] 95/85,5(5min)/95(1min)*
Rated lighting impulse withstand voltage [kV] 190
Rated frequency [Hz] 50
Rated continuous current [A] up to 1600
Rated continuous current of primary busbars [A] up to 1600
Rated short-time withstand current [kA] up to 25(3s) and 31,5(1s)
Rated peak current strength [kA] 63/80
Internal arc resistance [kA/1s] up to 25
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q1 VD4 (ABB)
Current transformer T1 TPU (ABB)
Weight [kg] ~1625
* - according to GOST standards
Notice: It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 2.3 - RELF 36 - Coupler bay – cubicle with a short-circuiting switch

Structural diagram

Schemat strukturalny rozdzielnicy RELF 36 - Pole sprzęgłowe - szafa ze zwieraczem

Front view

Elewacja rozdzielnicy RELF 36 - Pole sprzęgłowe - szafa ze zwieraczem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF 36 - Pole sprzęgłowe - szafa ze zwieraczem

Specifications:  
Rated voltage [kV] 36/40,5*
Rated power frequency withstand voltage [kV] 95/85,5(5min)/95(1min)*
Rated lighting impulse withstand voltage [kV] 190
Rated frequency [Hz] 50
Rated continuous current [A] up to 1600
Rated continuous current of primary busbars [A] up to 1600
Rated short-time withstand current [kA] up to 25(3s) and 31,5(1s)
Rated peak current strength [kA] 63/80
Internal arc resistance [kA/1s] up to 25
Degree of protection up to IP4X
Accessories:  
Sphincter Q4 ABB production
Grounding switch Q3 EK6 (ABB)
Weight [kg] ~1420
* - according to GOST standards
Notice: It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 2.4 - RELF 36 - Metering bay – withdrawable module with voltage transformers

Structural diagram

Schemat strukturalny rozdzielnicy RELF 36 - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Front view

Elewacja rozdzielnicy RELF 36 - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF 36 - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Specifications:  
Rated voltage [kV] 36/40,5*
Rated power frequency withstand voltage [kV] 95/85,5(5min)/95(1min)*
Rated lighting impulse withstand voltage [kV] 190
Rated frequency [Hz] 50
Rated continuous current of primary busbars [A] yp to 1600
Rated short-time withstand current [kA] up to 25(3s) and 31,5(1s)
Rated peak current strength [kA] 63/80
Internal arc resistance [kA/1s] up to 25
Degree of protection up to IP4X
Accessories:  
Movable module   withdrawable module with current transformers
Current transformer T2 TJP (ABB)
Grounding switch Q3 EK6 (ABB)
Surge arrester F1 GXE51 (ABB)
Weight [kg] ~1390
* - according to GOST standards
Notice: It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 3.1 - RELF ex - Feeder bay with circuit breaker

Structural diagram

Schemat strukturalny rozdzielnicy RELF ex - Pole liniowe z wyłącznikiem

Front view

Elewacja rozdzielnicy RELF ex - Pole liniowe z wyłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF ex - Pole liniowe z wyłącznikiem

Specifications:  
Rated voltage [kV] 12; 12*/17,5
Rated power frequency withstand voltage [kV] 28/42*/38
Rated lighting impulse withstand voltage [kV] 75; 75*/95
Rated frequency [Hz] 50
Rated continuous current [A] 630-2500
Rated continuous current of primary busbars [A] 630-2500
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q1 VB-4W (ZPUE); VD4 (ABB); SION (Siemens)
Current transformer T1 different manufacturers
Grounding switch Q3 fast with impulse operating mechanism
Surge arrester F1 Polim
Weight [kg] 870-1150
* - according to GOST standards
Notice: It is possible to configure the functionality and equipment of the bay (type/manufacturer)

Data sheet 3.2 - RELF ex - Feeder bay with disconnector

Structural diagram

Schemat strukturalny rozdzielnicy RELF ex - Pole liniowe z rozłącznikiem

Front view

Elewacja rozdzielnicy RELF ex - Pole liniowe z rozłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF ex - Pole liniowe z rozłącznikiem

Specifications:  
Rated voltage [kV] 12; 12*/17,5
Rated power frequency withstand voltage [kV] 28; 42*/38
Rated lighting impulse withstand voltage [kV] 75; 75*/95
Rated frequency [Hz] 50
Rated continuous current [A] 400-1250
Rated continuous current of primary busbars [A] 630-2500
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Disconnector Q2 NALF (ABB); OMB (ZWAE)
Grounding switch Q3 fast with impulse operating mechanism
Weight [kg] 715-850
* - according to GOST standards

Data sheet 3.3 - RELF ex - Coupler bay – cubicle with circuit breaker

Structural diagram

Schemat strukturalny rozdzielnicy RELF ex - Pole sprzęgłowe - szafa z wyłącznikiem

Front view

Elewacja rozdzielnicy RELF ex - Pole sprzęgłowe - szafa z wyłącznikiem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF ex - Pole sprzęgłowe - szafa z wyłącznikiem

Specifications:  
Rated voltage [kV] 12; 12*/17,5
Rated power frequency withstand voltage [kV] 28; 42*/38
Rated lighting impulse withstand voltage [kV] 75; 75*/95
Rated frequency [Hz] 50
Rated continuous current [A] 630-2500
Rated continuous current of primary busbars [A] 630-2500
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Circuit breaker Q1 VB-4W (ZPUE); VD4 (ABB); SION (Siemens)
Current transformer T1 different manufacturers
Grounding switch Q3 fast with impulse operating mechanism
Surge arrester F1 Polim
Weight [kg] 870-1150
* - according to GOST standards

Data sheet 3.4 - RELF ex - Coupler bay – cubicle with a short-circuiting switch

Structural diagram

Schemat strukturalny rozdzielnicy RELF ex - Pole sprzęgłowe - szafa ze zwieraczem

Front view

Elewacja rozdzielnicy RELF ex - Pole sprzęgłowe - szafa ze zwieraczem

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF ex - Pole sprzęgłowe - szafa ze zwieraczem

Specifications:  
Rated voltage [kV] 12; 12*/17,5
Rated power frequency withstand voltage [kV] 28; 42*/38
Rated lighting impulse withstand voltage [kV] 75; 75*/95
Rated frequency [Hz] 50
Rated continuous current [A] 630-2500
Rated continuous current of primary busbars [A] 630-2500
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Sphincter Q4 ZPUE production
Current transformer T1 different manufacturers
Weight [kg] 870-1150
* - according to GOST standards

Data sheet 3.5 - RELF ex - Metering bay – withdrawable module with voltage transformers

Structural diagram

Schemat strukturalny rozdzielnicy RELF ex - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Front view

Elewacja rozdzielnicy RELF ex - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Cubicle cross section

Przekrój przez szafę rozdzielnicy RELF ex - Pole pomiarowe - człon wysuwny z przekładnikami napięciowymi

Specifications:  
Rated voltage [kV] 12; 12*/17,5
Rated power frequency withstand voltage [kV] 28; 42*/38
Rated lighting impulse withstand voltage [kV] 75; 75*/95
Rated frequency [Hz] 50
Rated continuous current of primary busbars [A] up to 2500
Rated short-time withstand current [kA/3s] up to 31,5
Rated peak current strength [kA] up to 80
Internal arc resistance [kA/1s] up to 31,5
Degree of protection up to IP4X
Accessories:  
Movable module   withdrawable module with current transformers
Current transformer T2 different manufacturers
Grounding switch Q3 fast with impulse operating mechanism
Surge arrester F1 Polim (ABB)
Weight [kg] 660-750
* - according to GOST standards

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