Shaanxi Longxiang Electrical Co., Ltd. is one of the most reliable manufacturers and suppliers of 12kv-40.5kv high voltage earthing switch in China. With abundant experience, we are committed to providing high quality customized products with competitive price. Welcome to buy premium 12kv-40.5kv high voltage earthing switch made in China here from our factory.
High voltage earthing switch reliably grounds the busbar during maintenance to release residual charges and ensure the safety of maintenance personnel.
JN15-12/31.5 series indoor high voltage earthing switch (hereinafter referred to as earthing switch) is a new type earthing switch that designed and developed by our company according to market requirements. It can be used for AC 50(60)Hz electrical system and match all kinds of high voltage switchgear, as well as for maintenance of high voltage electrical equipment.
The earthing switch with simple structure and good dynamic and thermal stability is light and is convenient for using and installation. It is a good replacement of JN4-10 type earthing switch.
Standard: GB 1985-2004 AC HV disconnect switch and earthing switch, IEC129
Application: KYN61-40.5 HV switchgear and various types HV switchgear
Central distance between poles: 280, 300, 350, 400
Transport Package: Outside packing with Plywood Wooden Case; Inner packing with EPE Foam padding+ moisture-proof plastic film
- Ambient temperature: -10ºC~+40ºC;
- The height above sea level: <=1000m;
- Relative humidity: daily average humidity<=95%; monthly average humidity <=90%
- Earthquake intensity: not exceeding 8 degrees.
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12 |
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31.5 |
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S |
4 |
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80 |
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80 |
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1min Power frequency withstand voltage |
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6.5 |
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125 |
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2000 |
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1.Rated voltage
2.Rated short time withstand current; rated short circuit making current.
3.Single- earthing or double-earthing type
4.Matched swithgear model(KYN28A-12/KYN61-40.5 etc)
5.Operation type: manual or motor driven
6.Installation dimensions, special construction&interlocking requirement
7.Order quantity
For any special requirments, pls discuss with the manufacturer before placing an order.
Q1: What is the difference between earthing switch and disconnector?
A:The disconnector isolates power source and provides visible break. The earthing switch shorts circuit to ground for maintenance safety. Normally it cannot break load current and serves for earthing protection. They are often used together.
Q2:What parameters need to be confirmed when selecting earthing switch?
A:Rated voltage, rated short-time withstand current, rated short-circuit making current; matched switchgear type (KYN28-12 / KYN61-40.5 etc.); single-earthing / double-earthing; manual or motor-driven operation; installation dimension; interlock requirements.
Q3: How to choose between single-earthing and double-earthing type?
A:Single-earthing type is widely used for ordinary incoming / outgoing feeders. Double-earthing type applies to double-busbar and cable feeders requiring earthing protection at both ends for maintenance safety.
Q4: Do you inspect the finished products?
A: Yes, all products will be inspected strictly to ensure full compliance with ISO 9001 standards as well as relevant industry standards such as IEC. Also we will provide goods inspection reports for your reference before shipment.
Q5: What's your best lead time for orders?
A: It depends on the quantity and customization requirements. Please feel free to contact us for more information.
