HK-12/V common-box gas-filled cabinet
Short Description:
Product Parameters:Rated voltage Kv 12/24Power frequency withstand voltage KV 42/56Lightning impulse withstand voltage Kv 95/125Rated current A 630/630 1250/800Rated transfer current A 1750/1400Closed-loop breaking current A 630/630Cable charging breaking current A 135/1355% rated active load breaki …
Product details
Product Parameters:
Rated voltage Kv 12/24
Power frequency withstand voltage KV 42/56
Lightning impulse withstand voltage Kv 95/125
Rated current A 630/630 1250/800
Rated transfer current A 1750/1400
Closed-loop breaking current A 630/630
Cable charging breaking current A 135/135
5% rated active load breaking current A 31.5/31.5
Current interruption for power connection fault A 200/150
The breaking current of cable charging during power-on failure is A 115/87
Short-circuit breaking current KA (Note 2) 20/16 25/20
Making capacity KA 63/52.5 Note 2) 50/40 63/50
Short-time withstand current for 2 seconds, KA 25/25
Short-time withstand current 3-second KA 20/20 20/16 25/20
Mechanical lifespan (times) 5000 3000 10000 2000 5000 5000
Usage environment:
a. Ambient air temperature: high temperature 40℃ (with an average value of not exceeding 35℃ over 24 hours), low temperature -25℃;
b. Altitude: not exceeding 3000m (coordination with the manufacturer is required when exceeding 3000m);
c. Air humidity: The average daily relative humidity should not exceed 95%, and the average monthly relative humidity should not exceed 90%;
d. The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.6 kV.
Product Features
a. Cabinet structure: The inflatable compartment is made of 3-5mm thick stainless steel plates, processed by a CNC machine and welded by a welding robot, resulting in minimal welding deformation and good air tightness. The remaining compartments are made of cold-rolled steel plates, processed by CNC bending and welded, featuring high precision and good strength. Each functional unit is an independent module, making assembly relatively convenient. Each sealed compartment of the cabinet is equipped with an independent pressure relief channel, maximizing personal safety and equipment operation.
b. Applicable standards: GB/11022-1999 Common Technical Requirements for High-Voltage Switchgear and Controlgear Standards; GB/3906-1991 3~35kV AC Metal-Enclosed Switchgear;
c. Protection level: The inflatable isolation is IP67; the low-voltage cabinet body is IP4X.
