Generator circuit breaker cubicle type D-17G

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Generator circuit breaker cubicle D-17G type, air-insulated, is dedicated to lead out generator’s power with nominal voltage of 12 kV and 17,5 kV.


  • power generators leads in power stations, heat & power plants,
  • in electricity distribution networks and industrial plants.

General characteristics

  • indoor, single unit, air-insulated,
  • free standing (maintenance gangway),
  • metal enclosed,
  • internal arc resistant,
  • separate compartment of  auxiliary circuits,
  • perfect quality of paint coating,
  • modern design solusions ensure maintenance-free operation.

Application control and supervision systems allows generally maintenance-free operation of the generator circuit breaker cubicle with motor drives (operating of disconnector and earthing switch).We offer a series of applications of the generator’s circuit breaker cubicle. The presented design solutions are exemplary and thanks to a very experienced construction department, we can modify and execute them depending on the needs and requirements which is important in the case of retrofitting existing installations.For each generator’s circuit breaker cubicles D-17G, declaration of conformation is issued.


  • small overall dimensions and simple construction,
  • switching operations with closed door, with ipreserving IP 4X degree of protection,
  • easy maintenance,
  • guarante the correct order of awitching operations trought a system of interlock,
  • safety of operating staff in case of internal arc,
  • stable construction for easy transport and installation,
  • possibility of quick disassembling of a circuit breaker mounted on the truck,
  • easy access to flexible connector,
  • application of vacuum circuit breakers type VAH, 3AK7,
  • motor drives of the earthing and disconnector allow remote control (open / close),
  • possibility to choose between remote or local control,
  • minimum requirements for the inspection and maintenance,
  • environmentally-friendly production,
  • professional service of the manufacturer.

Examples of execution 12 kV

Examples of execution 17,5 kV

  1. circuit breaker
  2. disconector odłącznik / disconector
  3. earthing switch
  4. surge arrester
  5. current transformer
  6. voltage transformer
  7. protection fuse
  8. motor drive
  9. busching
  10. support insulator
  11. current circuit
  12. flexilble connector
  13. safety flap
  14. truck of circuit breaker

Technical data

Type D-17G
Rated voltage kV 12 17,5
Power frequency withstand voltage kV 28 38
Lightning impulse withstand voltage kV 75 95
Rated current:      
short-time withstand
peak withstand current
up to 50001)
up to 63/1
up to 1602)
up to 40001)
up to 50/1
up to 1252)
Internal arc withstand current kA/s up to 63/1  
Rated frequency Hz 50
Degree of protection     
Dimensions of cubicles:     
width [A]
height [B]
depth [C]
Internal Arc Classification   AFLR
Compliance with standards   PN-EN 62271-200; PN-EN 62271-1
1) Execution of cubicle with higher rated currents of the busbar after consultation with the manufacturer.
2) Execution of cubicles with circuit-breaker VAH type higher applications in accordance with IEEE C37.013 (respectively 173 kA and 137 kA).

Exemplary schematic diagrams

Product card in pdf format Generator circuit breaker cubicle type D-17G plik .pdf

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