JN4-12 Indoor High Voltage Ground Isolation Switch for 12kV Power System Grounding Protection

Classification:Isolation switch

Inside Road & Administration Industry & Trading Garden,Houshan Industry Area,Fuzhou City,Fujian Province

0591-22806687 0591-22806697

0591-22806667

bs@china-grid.com.cn

Overview
Description:

JN4-12 (G) type indoor high-voltage grounding switch is the main component of 12KV indoor AC metal canned removable metal-enclosed switchgear and other high-voltage switchgear. It can also be used alone.

As grounding protection in AC 50HZ power system of 12KV and below, it has the ability to close short-circuit current, reasonable structure, small size, flexible operation and easy installation and adjustment.

Use environment:

Altitude 1000-3000m; ambient air temperature: upper limit +40°C: lower limit -25°C The seismic intensity does not exceed 8 degrees

There is no fire, no danger of explosion, severe dust, chemical corrosion and severe vibration.

Project Unit Data
Rated voltage KV 12
Rated short-time withstand current Hz 20
Rated short circuit duration S 4
Rated short circuit closing current KA 50
Rated peak withstand current KA 50
Center distance between poles mm 210; 230;250
Rated insulation level 1minPower frequency withstand voltage KV 42
Lightning impulse withstand voltage 75
Type L E C
JN4-12G/20-210 752 210 618
JN4-12G/20-230 792 230 668
JN4-12G/20-250 832 250 708
Contact Us
0591-22806687 0591-22806697
0086-13950298099
0591-22806667
Inside Road & Administration Industry & Trading
      Garden,Houshan Industry Area,Fuzhou City,Fujian Province
Sampras@china-grid.com.cn
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