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HXGN□-12 (SF6) Unite type AC metal closed ring network switchgear

Switchgear Cabinets

HXGN□-12 (SF6) Unite type AC metal closed ring network switchgear

The HXGN17-12 box-type fixed AC metal-enclosed switchgear is a common high-voltage ring main unit developed for urban power grid renovation and new distribution engineering construction. It is capable of breaking load current and short-circuit current, as well as making short-circuit current reliably to meet the requirements of circuit switching and fault protection in power distribution systems.The main circuit adopts spring operating mechanisms with both manual and electric operation modes. Separate manual operating mechanisms are equipped for earthing switches and isolating blades to adapt to operation in maintenance scenarios. Featuring high integration and compact size to save installation space, the equipment brings no combustion or explosion risks during operation. It is also fitted with complete five-prevention interlocks to avoid incorrect operations, delivering stable and safe power supply for various ring network power distribution applications.

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Product Overview

The HXGN17-12 box-type fixed AC metal-enclosed switchgear is a common high-voltage ring main unit developed for urban power grid renovation and new distribution engineering construction. It is capable of breaking load current and short-circuit current, as well as making short-circuit current reliably to meet the requirements of circuit switching and fault protection in power distribution systems.The main circuit adopts spring operating mechanisms with both manual and electric operation modes. Separate manual operating mechanisms are equipped for earthing switches and isolating blades to adapt to operation in maintenance scenarios. Featuring high integration and compact size to save installation space, the equipment brings no combustion or explosion risks during operation. It is also fitted with complete five-prevention interlocks to avoid incorrect operations, delivering stable and safe power supply for various ring network power distribution applications.

Model and Meaning

Service Conditions

  • Ambient temperature: upper limit +40℃ , lower limit -25℃ ;
  • Altitude: the altitude does not exceed 2000m;
  • Relative humidity: the daily average is not more than 95%; the monthly average is not more than 90%;
  • Ambient environment: The surrounding air is not obviously polluted by corrosive gases or flammable gases, water vapor, etc.
  • No frequent and severe vibrations.

Technical Parameters

Item Unit Parameters
Rated voltage kV 12
Rated frequency Hz 50
Main bus bar rated current fuse breaker maximum rated current A 630/125
Main loop,earthed loop short time endurable rated current kA/s 46101
Main loop,earthed loop maximum endurable rated current kA 50
Main loop,earthedloop short circuit on-and off rated current kA 50
the opening number of the load switch with full capacity times 100
The fused breaker opening the current kA 31.5, 40
Rated closed loop opening current A 630
Rated shift current A 1600
Machine life times 2000
1min line frequency resistance(peak value)recurrence,to the earth/isolation fracture kV 42/48
The lighting shock resistance (peak value)recurrence,to the earth/isolation fracture kV 75/85
Secondary loop 1min line frequency voltage resistance kV 2
Protection grade IP3X  

Switchgear Dimensions