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Medium Voltage Switchgear SIMOPRIME with vacuum circuit breaker (With air-insulated) on the maximum working voltage up to 17,5 kV.

Modular switchboard SIMOPRIME with circuit breaker switchgear is a factory-built, which passed the test model and is designed for indoor installation in areas of distribution substations in accordance with standards IEC 62 271 -200, VDE 0670, Part 6 and GOST 14693-90.


Medium Voltage Switchgear SIMOPRIME with vacuum circuit breaker

(With air-insulated) on the maximum working voltage up to 17,5 kV




Max, value 17,5 kV/31.5 kA/2500А

Modular switchboard SIMOPRIME with circuit breaker switchgear is a factory-built, which passed the test model and is designed for indoor installation in areas of distribution substations in accordance with standards IEC 62 271 -200, VDE 0670, Part 6 and GOST 14693-90.






Sphere of application

Scope: Industry

  • Power
  • Cement
  • Automotive
  • Steel Enterprise
  • Rolling mills
  • Mining
  • Textile, paper and food industry
  • Chemicals
  • Oil Industry
  • Pipeline transportation systems
  • Sea oil platforms
  • Electrochemical Industry
  • Petrochemical Industry
  • Shipbuilding
  • Diesel Generator Power
  • System standby power
  • Development of lignite opencast
  • Units for traction


Technical characteristics

Electrical characteristics (maximum values) switchgear SIMOPRIME


Technical characteristics

Rated operating voltage
15 кВ
Nominal frequency
50 Гц
One-minute test voltage of industrial frequency
42 кВ
Test voltage lightning impulse
95 кВ
Thermal current, 3s
31,5 кА
Electrodynamic current resistance at 50 Hz
80 кА
Rated breaking current
31,5 кА
Rated operating current busbar
2500 А
Rated operating current waste connections
- feeder with circuit breaker
- feeder with load switch
2500 А
630 А1


Classification, overall and mounting dimensions, layout scheme

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Overview of types of cells

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Embedded devices

These data refer to standard cable end sleeves RXS-core cable with XLPE insulation.

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Overview of types of cells

Cell sectional breaker busbar (Possibly as a mirror version)


The cell with the module instrumentation


Structures of cells

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Structures of cells


Diagram of the cells:

  1. Low voltage compartment
  2. Lock for locking the door compartment of low voltage
  3. Capacitive voltage control system available for outgoing cable line and busbar (option)
  4. Door cover high voltage
  5. The window for visual observation trolley switching apparatus
  6. Lock for locking the cover of high voltage with deadlocks
  7. Openings for Mechanical platoon consisting of a spring breaker
  8. Openings for manual operating circuit breaker (ON / OFF)
  9. Windows for visual control of the vacuum circuit breaker
  10. Door handle
  11. Holes drive trucks switching apparatus
  12. The opening drive of earthing
  13. Canal pressure relief
  14. Busbars
  15. Bushing
  16. Insulators
  17. Block current transformer (optional)
  18. Earthing with the possibility of switching current short-circuit (optional)
  19. Cable terminations
  20. Voltage transformer (optional)
  21. Team bus grounding
  22. Power connector breaker
  23. The vacuum interrupter chamber
  24. Cart switching apparatus



А High voltage compartment with a roll-out element

В In the compartment with modular high-voltage rails

С With cable compartment

D Withdrawable element

Е Compartment, low voltage


Isolated compartments, deadlocks and service

Switchgear compartment

  • All switching operations are possible only with the door closed compartment of high voltage (HV)
  • Discharge pressure is up
  • Front doors and side walls of cells trailing switchgear have lacquer (obtained by spraying fine powder materials) of resistant material based on epoxy resin
  • Separate drive protective curtain - Busbar compartment - compartment cable connections
  • Class partitioning: Partitioning of RM in a completely isolated compartments by grounded metal protective curtains and dividing walls
  • Door compartment HV, resistant to shocks in the event of excess pressure inside the arc in a wiring compartment
  • Side metal ducts for laying control cables
  • Access is only possible depending on the current state of the lock (lock the door compartment HV depends on the position withdrawable element)
  • Option: Test sockets for connecting a capacitive voltage control system availability
  • Compartment switching equipment is designed to place components in different set of items of cells, including - Vacuum circuit breaker with a voltage transformer or without him, mounted on a trolley - trolley disconnector - truck vacuum contactor - trolley instrumentation.


Compartment Busbar

  • Pressure relief is carried upward through the channel of the pressure relief
  • Optional: cross-sectioning compartment Busbar dividing bulkheads from cell to cell
  • Busbars of flat copper bus adjacent cells are interconnected by means of screwed with each other bus bridges - the nominal operating current of 2500 A - performance with isolated teams tires (optional)


Busbar compartment

  • Pressure relief is carried upward through the channel of the pressure relief
  • Optional: cross-sectioning compartment Busbar dividing bulkheads from cell to cell
  • Deadlocks connecting door compartment HV, bay cable connections and position withdrawable element. Access to the compartments is possible with the help of special tools after the sequence of unlocking
  • Busbars of flat copper bus adjacent cells are interconnected by means of screwed with each other bus bridges
    • The nominal operating current up to 2500 A
    • Performance with isolated teams tires (optional)
  • Access via the rear panel and roof panel module for threaded attachment is not possible without special tools
  • Option: Capacitive voltage control system availability
  • Options: the possibility of incorporating auxiliary equipment:
    • Voltage Transformer
    • Earthing busbar
    • Current transformers at the busbars

Compartment cable connections

  • Pressure relief is carried upward through the canal pressure relief to the rear of the cell
  • Designed for connection - single-core - core cable
  • Separate open the safety shutter, providing the possibility of control cables
  • Team bus grounding
  • Connection (cable gland) from the front or rear
  • Option: resistant to impact pressure floor panel (floor unit)
  • Use of modular and toroidal current transformers
  • Access (impossible without the use of special tools) through the rear panel screw mounts compartment cable connections (for switchgear with rear cable entry)


Additional equipment in a cable compartment:

  • Solid cable with XLPE cross-section max. 4 x 500 mm2 per phase
  • Three wire cable with XLPE cross-section max up to 3 x 300 mm2 per phase
  • Electrode for capacitor voltage control system availability
  • Voltage transformers
    • Epoxy insulation
    • Max. 3 pieces, banana
    • Is permanently built without fuses in the primary circuit
  • Reliable Earthing with the possibility of inclusion in the current CP
    • Manual
    • In addition to the standard blocking, prohibiting earthing switch, depending on the position of truck circuit breakers
  • The customer's choice of locking a padlock, or with an electromagnetic lock
  • Discharger or surge suppressor
    • Arrester to protect the switchboard from external surge
    • Surge suppressor to protect consumers from the surge, if they occur during switching



  • The conditions of locks prescribed new standards IEC 62 271-200/VDE 0670-6 and GOST 14693-90
  • Earthing switch is possible only when the truck circuit breaker in the control situation
  • Earthing switch is possible only when the truck circuit breaker in the control situation
  • Moving (racking and rolling out), relays circuit breaker can only be switched off power switch (in the "OFF.") And grounding in the "grounded"
  • Mechanical coding on the truck circuit breaker prohibit the installation of trolley circuit breakers of the same type, but designed for smaller value of the nominal operating current in cells with higher values of the nominal operating current
  • Lock the door compartment HV, set in logical dependence on the trolley circuit breaker
  • Door compartment HV admits its opening only if the truck circuit breaker is in the control situation
  • Option: electromagnetic lock


Low voltage compartment

  • Designed for placement of protection devices, control, measurement and metering of electricity
  • Isolated from the rest of the cell volume (compartment HV)
  • Can be removed independently from the rest of the cell (compartment mounted low voltage). In the performance of a removable low-voltage wires are connected by sock
  • Option: partitioning insulating partitions between adjacent cells


Circuit Low Voltage

  • Control circuit cells are made flexible wires resistant to bending and torsion, and laid in boxes, covered with metal panels
  • Mechanical-connector 64-pin plug for coded connections (cabling operational current) between the trolley switching apparatus and low-voltage compartment
  • Low-voltage wire from cell to cell are connected by plug connectors


User Benefits and features

Benefits Features

High reliability of switchgear and complete customer satisfaction (a decision based on individual characteristics and in full accordance with the requirements)

  • All switching operations, including emergency manual switching is possible only when the closed position, door compartment HV
  • Locks between the door cover and HV switchgear
  • Moving Truck circuit breaker is possible only if the closed position, door compartment HV
  • Metal grounded protective curtains and partitioning
  • Resistance to internal arc up to 31,5 kA, 1 sec, for the EU 62 271 -200, GOST 14693-90 clause 3.2
  • Application of vacuum circuit breakers

High degree of security for the people (protection of life and health)

  • Prefabricated switchgear, the model tested for the EU 62 271-200, GOST 14693-90
  • Typical (standard) tests the circuit breaker mounted in a cell
  • Use of standard components, available worldwide
  • The application does not require maintenance of vacuum circuit breakers
  • Quality System certified in accordance with DIN EN ISO 9001
  • Performance based on best international practices
  • High economic efficiency

Highest operational readiness

  • (Classification according to EU LSC2B 62 271 -200): the possibility of operations for maintenance without disrupting normal operation of neighboring cells through a grounded metal safety shutters and dividing partitions
  • Application of vacuum circuit breakers, maintenance

Saving money


  • Application of vacuum circuit breakers do not require maintenance


The rules, regulations, directives


Switchgear answer to the requirements of the applicable rules and regulations and technical documents in the current edition as at the time of the model (standard) tests.

Requirements for electrical facilities to install switchgear

Switchgears are designed for use as domestic accommodation facilities according to IEC 61 936 (Power Installations exceeding AC 1 kV) and VDE 0101.

  • Operating outside lockable electrical equipment - may be applied in inaccessible to unauthorized persons places. Metal outer shell of switchgear equipment is not open and not be removed without special tools.
  • When operating in closed (locked with a key), electrical rooms: Closed (lockable) Electrical room - this room or outdoor area, which are intended exclusively for the operation of electrical installations and are being constipated, access in that are qualified electricians and persons passed electro-technical instruction. Unauthorized persons have access to these areas only when accompanied by qualified staff or persons who have received special instruction.

Insulation properties

  • Insulation properties are confirmed by testing switchgear application to the subject an object of the normalized test voltage power frequency and lightning impulse voltage test in accordance with the instructions of EC 60 694/VDE 0670-1000 (see table "Insulation Properties").
  • The normalized values are given to the height of sea level NN (normal zero) and to normal atmospheric conditions (1013 hPa, 20 C, humidity of 11 g / cubic meter for IES60 071 and VDE0111).
  • With increasing height placement insulating properties are reduced. For vertical placement above 1000 m (above sea level) rules do not provide guidance on the insulating properties. The corresponding rates are regulated by special regulations.



Standards Review


1) Power switch

2) Disconnector and Earthing

3) load switch

4) load switch

5) Monitoring Systems available voltage

6) Fuses HV completed with fuse


Table - Insulating capacity



One-minute test voltage of industrial frequency should be set for the respective application (height location) calculated by the formula:


Test voltage lof ightning impulse is defined by:


Height of

With increasing altitude above sea level, placing insulating properties of insulation in air decreases due to dilution air density.

For switchgear, designed for installation at altitudes above 1000 m above sea level, must consider the reduction of insulation properties (see also I EC 60 694/VDE 0670-1000).



Height of accommodation above sea level

12 kV

Voltage class of switchgear

75 kV

Normalized test of voltage lightning pulse switchgear

Of lightning impulse voltage be calculated by the formula:



Given h above the table, select the class of switchgear voltage: 15 kV.




The term "reliable (reliably) including earthing" means a ground conductor with the possibility of a short circuit on

  • 1ЕС62 271-102 and
  • VDE 0671-102/EN 62 271-102
Resistance to internal arc
  • To verify compliance with safety requirements of switchgear in part to protect service personnel are testing resistance to internal arc.
  • Testing of resistance to the inner arc carried out in accordance with the instructions of IEC 62 271 -200 Annex A.
  • Switchgear satisfy the criteria 1 - 5 above mentioned standards for electrical equipment of the normal performance at rated current up to 31,5 kA short circuit.
  • Determination of criteria:
    • Criterion 1

      Properly close the lid and the doors should not be openned. Deformation of cabinets is not allowed.

    • Criterion 2

      In the normalized duration of the test shall not be violated the integrity of the test object (no design elements are not disrupted). Prevent disruption of small parts own weight up to 60 gramm.

    • Criterion 3

      Step inside the arc should not lead to burnout shell in serviced areas at altitudes up to 2m.

    • Criterion 4

      No ignition occurs under the influence of indicators of combustion products (hot gases) is allowed a fire of smoldering particles, but not from the hot gases. Also not allowed fire indicators from burning paint coatings or burning labels

    • Criterion 5

      Metal outer shells remain uninterrupted electrical contact with the ground in some places

Rating of the current

  • The values of the load capacity of current given in accordance with the instructions of IEC 60 694 / VDE 0670-1000 and IEC 62 271 -200 to the following ambient temperatures:
    • Max. daily average (24 hours) + 35°C
    • The highest ambient temperature + 40°C
  • Load capacity of the flow cells and busbars depends on the ambient temperature outside the outer metal shell
  • To achieve the max, nominal values of operating current plant cell should be provided with running or forced ventilation.

Climatic factors and adverse environmental impacts

Switchgears SIMOPRIME designed to operate (possibly with additional measures of protection) in terms of factors, external environment:

  • Natural impurities (i.e., in conditions of high natural dust)
  • Reactive (aggressive) harmful substancesвредные вещества
  • Small animals

and categories (classes) climatic versions:

  • ZKZ
  • ZK5.

Classes are governed by climatic execution publication IEC60 721-3-3.

Protection against penetration of external parts from accidental contact with the conductive parts and splashproof

Switchboard with power switches SIMOPRIME complies with the rules - IEC62 271-200 - IEC60 529 - VDE 0470-1 - VDE 0670-6 to protect staff from accidental touch current leading and moving parts enclosed in a shell, and protect the equipment against the penetration of foreign bodies and splashes on the set for the design of the degree of protection, namely:

  • Metal outer shell: P3XD
  • Partitioning into sections: P2X