发电机中性点接地电阻柜为专用于发电厂发电机中性点采用高电阻接地的成套装置.发电机电压等级主要为6kv至20kv.当定子发生一点接地时,可限制接地电流在很小的数值,并有效抑制电弧接地暂态过电压。
The neutral point grounding resistor cabinet of the generator is a complete set of equipment specially designed for high resistance grounding of the neutral point of the generator in power plants The voltage level of the generator is mainly between 6kV and 20kV. When the stator is grounded at a certain point, the grounding current can be limited to a very small value, and the transient overvoltage caused by arc grounding can be effectively suppressed.
1、电阻柜适用于户内。
1. The resistance cabinet is suitable for indoor use.
2、环境温度:不低于-40℃,不高于+40℃。
2. Environmental temperature: not lower than -40 ℃, not higher than+40 ℃.
3、海拔高度不超过3000m。
3. The altitude shall not exceed 3000m.
4、电阻柜相对湿度:不大于95%（25℃）。
4. Relative humidity of resistance cabinet: not exceeding 95% (25 ℃).
5、电网频率:58～62Hz(60Hz系统)、48～52Hz(50Hz系统)。
5. Grid frequency: 58-62Hz (60Hz system), 48-52Hz (50Hz system).
6、电阻柜安装场所的空气中不应含化学腐蚀气体和蒸汽.无爆炸性尘埃。
6. The air at the installation site of the resistance cabinet should not contain chemical corrosive gases and vapors No explosive dust.