Drawout switchgears D-...P, D-...PL series

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Purpose

Distribution of three - phase alternating current electrical energy with nominal frequency 50/60 Hz and nominal voltage up to 40,5 kV.

Application

  • in electricity distribution networks and industrial plants,
  • in secondary distribution,
  • in underground mining plants,
  • in industrial plants,
  • in unmanned distribution substations and distribution - transformer transportable stations.

General characteristics

  • indoor drawout switchgear, air - insulated,
  • free standing or wall mounted,
  • metal - clad, with metallic partitions and a single system of busbars,
  • fit for computer aided system of supervision and control,
  • equipped with the system of quick breaking of arc fault,
  • cubicles fulfil the requirements of standards in arc protection inside the enclosure,
  • D-12P type switchgear (up to 1600 A, up to 31,5 kA/3s) with approval of the president of state mining authority (WUG) to used in underground mining plants,
  • available variants:
    • P - standard version,
    • PL - version with motor drivers of withdrawable part end earthing switch.

Features

  • small overall dimensions,
  • reliable system of lifting metallic shutters,
  • possibility of moving the withdrawable part with motor drive mechanism,
  • possibility of closing and opening of the earthing switch with motor drive mechanism,
  • electromechanical interlock which prevents closing the earthing switch when its fixed contacts are live,
  • convenient switching operations with closed door,
  • guarantee of proper switching operation owing to the system of interlocks eliminating faults,
  • safety for the operating staff,
  • possibility of carrying out repair and maintenance works within the unit without a need to de-energise the busbars of the switchgear,
  • high voltage indication in each cubicle,
  • possibility of quick replacement of the circuit-breaker,
  • convenient access to connect cables and apparatus,
  • minimal inspection and maintenance requirements,
  • environment friendly production and operation,
  • producer's professional service,
  • possibility to perform for the ambient temperatures of + 40°C (switchgears type D-12P, D-17P),
  • in places subject to vibrations we perform foundation the switchgear on a special frame using elements of antivibration - vibration damping,
  • perfect quality finish (painted or galvanised).

Characteristic cubicles of the switchgears

  1. Front view and cross-section of the D-24P cubicleLow voltage channel (optionBusbar bushing
  2. Izolator przepustowy - szynowy
  3. Bushing with contacts
  4. Busbars
  5. Withdrawable part
  6. Metallic shutters
  7. Removable cover
  8. Partition plate
  9. Pressure relief flaps
  10. Current transformers
  11. Voltage transformers on a truck
  12. Earth fault transformer
  13. Earthing switch
  14. Motor drive mechanism of the earthing switch (PL only)
  15. Protection equipment relay system
  16. Back door (option)
  17. Repair cover
  18. Switch-disconnector
  19. Fan (only 4000 A)
  20. Guide
  21. Maintenance plate
    • limit switch
    • optic sensor

Front view and cross-section of the D-12P 4000 A cubicleFront view and cross-section of the D-12P or D-17P with NAL switcha. Withdrawable part in test positionb. Access to the cable compartment

Technical data

Type of the switchgear D-12P D-17P D-24P D-40P
Rated voltage kV 12 17,5 24; 25 36; 40,5
Power frequency withstand voltage kV 28 / 421) 38 50 70 / 951)
Lightning impulse withstand voltage kV 75 95 125 170 / 1901)
Rated current:
normal of functional unit
normal of main busbars
short-time withstand current
peak withstand current
A
kA/3s
kA
kA
up to 4200
up to 5000
up to 63/3
up to 160
up to 4000
up to 4000
up to 50/3
up to 125
up to 2500
up to 2500
up to 31,5/3
up to 80
1250; 2400
1250; 2400
up to 25/3; 31,5/3
up to 63; 80
Internal arc withstand current kA/s up to 63/1 up to 63/1 up to 31,5/1 up to 31,5/1
Rated frequency Hz 50 50/60 50 50
Degree of protection   IP 41 / IP 542) IP 41 / IP 54 IP 41 / IP 54 IP 4X
Dimensions of panels:
width [A]
height [B]
depth [C]
mm
mm
mm
600 ÷ 1000
2150 ÷ 2620
1300 ÷ 1525
600 ÷ 1000
2150 ÷ 2620
1300 ÷ 1525
750, 950
2300
1470
1200, 1800
2500
2060 ÷ 2980
Internal Arc Classification   AFLR
Partition class   PM
Loss of Service Continuity Classification   LSC2B
Compliance with standards   PN-EN 62271-200; PN-EN 62271-1, GOST 14693-90, GOST 15163-96
1) According to GOST
2) Approval of the president of state mining authority (WUG) - execution up to 31,5 kA/3s, up to 1600 A
3) Execution up to 31,5 kA/3s, up to 1600 A

Exemplary schematic diagrams

Product card in pdf formatDrawout switchgears D-...P, D-...PL series plik .pdf

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+48 63 24 66 348

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