Structure and performance
The high-voltage grounding switch JN15C.12/31.5 is an improved type of JN15.12. It is a new type of grounding switch specially designed for small cable space in the cabinet. Its performance meets the requirements of GB1985-89 "AC high-voltage isolation switch and grounding switch and IEC129" .
The main technical parameters
|Rated voltage (kV)||12|
|4s short-time withstand current (kA)||31.5||40|
|Rated short-circuit making current (kA)||80||100|
|Rated peak withstand current (kA)||80||100|
|Rated insulation level||Lightning impulse voltage (kV)||Phase, relative to 75, fracture 85|
|1min power frequency voltage (kV)||Phase, relative to 75, fracture 85|
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