Indoor Use 3 Pole Alternating Current High Voltage Earthing Switch-Jn15-24
Model No.: JN15-24
JN15-24 series Indoor AC HV Earthing Switch(hereinafter referred to as eathing switch) is applied to indoor grounding device with rated voltage 24kV, three-pole alternating current 50Hz. Its performance meets the requirements of the national standards GB 1985-2004 High-voltage Alternating current Disconnector and Grounding switch. It can be used in armoured and movable type AC metal enclosed switchgear. According to requirements of Safety Work Order, when the electric equipment power outage, the earthing switch should be closed to make grounding short circuit artificially to guarentee the maintainers can get safe and reliable ground potential protection. At the same time, with live display device,it can prevent turning off the earthing switch. Once the error occurred, it can avoid other equipment from being damaged with making capacity.
1. simple and compact structure
3.small operation force
5.can be equipped with all different kinds of high voltage live display devices
6.can be applied in different type of high voltage switch cambinet
7. the function of grounding protection when high-voltage electric equipment is under examining and repairing
Main Technical Parameters
|3||Rated short-time withstand current(thermal stability current)||kA||25/31.5|
|4||Rated short-time withstand current duration||S||4|
|5||Rated peak withstand current(dynamic stability current)||kA||63/80|
|6||Rated short-circuit making current||kA||63/80|
|7||Rated 1 min power-frequency withstand voltage||kV||65|
|8||Rated lightning implus withstand voltage||kV||125|
|9||Fracture distance after switch opening||mm||≥190|
2.Ambient temperature-25ºC-+ 40ºC; stored temperature-30ºC;
3.The daily average of relative humidity shall not be larger than 95% and the monthly average shall not be larger than 90%;
4.The site that the seismic intensity does not exceed degree 8; the gradient shall not exceed 5°.
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Product Categories : 24kV Indoor HV Load Switch