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HTN-12 Environmental protection gas ring network cabinet (standardized and customized by State Grid)

The environmental protection gas ring network cabinet adopts dry air or N2 as the insulating medium and vacuum arc extinguishing chamber for arc extinguishing. Its disconnector and arc extinguishing chamber are completely enclosed in the stainless steel gas box of dry air or N2. It is fully insulated and sealed. The gas box is welded with imported stainless steel plate and advanced robot welding technology, and the protection grade of the gas box reaches IP67. It adopts the structure with mature technology and convenient installation, which fully meets the requirements of green environmental protection, safety and reliability, compact structure, maintenance free and long service life. It is a completely environment-friendly switchgear product integrating high-tech nuclear, Li parts and new technologies, new processes and new materials. Its main functional units include V unit (circuit breaker unit), C unit (load switch unit) and F unit (load switch fuse combination unit).
华拓集团
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Parameters

 

Product overview

The environmental protection gas ring network cabinet adopts dry air or N2 as the insulating medium and vacuum arc extinguishing chamber for arc extinguishing. Its disconnector and arc extinguishing chamber are completely enclosed in the stainless steel gas box of dry air or N2. It is fully insulated and sealed. The gas box is welded with imported stainless steel plate and advanced robot welding technology, and the protection grade of the gas box reaches IP67. It adopts the structure with mature technology and convenient installation, which fully meets the requirements of green environmental protection, safety and reliability, compact structure, maintenance free and long service life. It is a completely environment-friendly switchgear product integrating high-tech nuclear, Li parts and new technologies, new processes and new materials. Its main functional units include V unit (circuit breaker unit), C unit (load switch unit) and F unit (load switch fuse combination unit).

 

Model meaning

HTN

12

(V)

630

20

Huatuo group

Rated voltage

Ring main unit type:

Rated current:

Rated short-time withstand current:

Model of environmental protection gas ring network cabinet

12kV

V-circuit breaker cabinet c-load switch cabinet f-load switch fuse combination cabinet

630A

20kA

 

Technical Parameter

Project Company Parameter
Rated voltage kV 12
Rated frequency Hz 50
Rated current Circuit breaker cabinet, load switch cabinet A 630
  Combined electrical cabinet A 125
Loop resistance  Circuit breaker cabinet Circuit breaker cabinet μΩ ≤150
  Combined electrical cabinet μΩ ≤400
Rated short-time withstand current kA 20
Rated short-time withstand current time s 4
Rated peak withstand current kA 50
Rated short-circuit breaking current (circuit breaker cabinet) kA 20
Rated short-circuit breaking current (circuit breaker cabinet) kA 50
Temperature rise test current   Circuit breaker cabinet A 693
  Combined electrical cabinet A 125
Expected short-circuit making and breaking current (switchgear) kA 31.5
Rated transfer current (combined apparatus cabinet) A 1750
Rated power frequency lmin withstand voltage (phase to ground) kV 42
Rated power frequency Imin withstand voltage (fracture) kV 48
Peak value of rated lightning impulse withstand voltage (phase to ground) kV 75
Peak value of rated lightning impulse withstand voltage (fracture) kv 85
Partial discharge (ur. 12) pc ≤10
Degree of protection (enclosure)   IP4X
Annual gas leakage rate   ≤0.01%
Gas moisture content uL/L ≤150
Rated operating voltage (DC) V 48
Design pressure of inflatable compartment MPa 0.08

 


 

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