Guangdong Fullde Electrical Technology Co., Ltd
Guangdong Fullde Electrical Technology Co., Ltd
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Product Description and Application
Suitable for single phase grounding fault during operation of generator,when arc occurs to the fault point, the winding insulation damage scope will be further increased causing short circuit between phase or turns.For this reason,high resistance grounding is usually used for neutral point of generator so as to restrict grounding current and prevent damage of overvoltage.At present,this device is widely used for urban power supply system,power plant,metro,metallurgy and petrochemical industry.
Main Features:
* High-quality stainless stell nickel-chrome alloy or non-metallic materials are used,which have high conductivity,high temperature coefficient and can be durable to the temperature of 1500℃. It's stability is outstanding;
* The grounding transformer in the cabinet is dry type transformer,with large capacity and resistant to impact;
* Professional protection to aviod the iron core of generator burned down,and reduce damage of iron core of generator's stator winding while grounding;
* Epoxy resin casting dry type grounding transformer,zero sequence CT,single phase isolated switch,resistor online monitoring device,heater,temperature and humidity controller can be equipped,so as to effectively monitor grounding failure current and voltage.The connecting points for switch and alarm are provided.
Specifications:
| Technical Parameters | |
| Rated voltage | 35KV |
| Fault current when short circuit | 10,000A |
| Allow flow time | 1S |
| Resistance | 3Ω |
| Altitude | ≤1000m |
| Ambient temperature | ﹣25℃~45℃ |
| Cooling method | forced air cooling,horizontal air in, vertical air out |
| Ambient temperature | ﹣25℃~55℃ |
| Max relative humidity | 90% below 25℃ |
| Maximum wind speed | 35m/s |
| Icing thickness | 10mm |
| Sunshine intensity | ≤0.1W/cm2 |
| Contamination level | E |