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High voltage switchgearHXGN17-12(F) cubicle (fixed type) alternating-current metal-enclosed ring main unit
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HXGN17-12 (F) cubicle (fixed type) alternating-current metal-enclosed ring main unit (hereinafter referred to as ring main unit) is a new generation of HV product designed and developed independently by our company by adopting overseas advanced technologies combined with the power requirements of our country. It is applicable for three-phase distribution systems of 50Hz and rated voltage 10kV, used for electric energy receiving and distribution in factories and mine, residential districts, high-rise buildings, schools, parks and so on, also can be applied to ring network power supply and terminal power supply. 
All internal components are national advanced products with excellent performances complying with relevant standards, are featured with small size, light weight, simple operation, small operation force, safe operation, convenient maintenance, reliable quality, less floor space, installation against wall is available, free of fire or explosion hazard, etc. Through data analysis and expert appraisal, the technical parameters of our products have reached international advanced level among the similar products.
● Ambient temperature: -40℃~+45℃; 
● Relative humidity: daily mean not over 95%, monthly mean not over 90%;
● Altitude: not exceed 4000m;
● The installation site should be free of fire, explosive danger, serious pollution, chemical corrosion or severe vibration.
Item Unit Load switch 
 ZFN21 vacuum  ZFN11-12 vacuum FN11-10 pressure-operated
  Rated voltage  
  Max working voltage
  Rated frequency
  Rated current 
  Rated short-time withstand current
  Rated short-time withstand current of ground circuit
  Rated peak withstand current
  Rated peak withstand current of ground circuit
 KV
  KV
  Hz
  A
  KA/s
  KA/s
  KA
  KA
 10
  12
  50
  630
  20/4
  20/4
  50
  50
 10
  12
  50
  630
  20/3
  20/3
  50
  50
 10
  12
  50
  400、630、800
  20/3
  20/3
  50
  50
  Rated no-load transformer breaking current 
  Main circuit, ground circuit and rated short-circuit making current  
  Rated short-circuit breaking current of fuse 
  Electric life at rated current 
  Mechanical life 
 KA
  KA
  KA
  Times
Times
6000kVA transformer 
  50
  31.5
  1000
  1000
 1250kVA transformer
  50
  31.5
  100
  200
 

  1min power frequency withstand voltage (effective value)

   To-ground/phase across the isolating distance 
 KV  42/48
   Power frequency withstand voltage isolating distance (effective value)  KV  53
   Lightning impulse withstand voltage (peak)
   To-ground and phase-to-phase/across the isolating distance 
 KV  75/85
   1min power frequency withstand voltage of secondary circuit   KV  2
   Rated switching current  A  3150  1300
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