发电机中性点接地电阻柜使用条件:
The generator neutral point grounding resistance ark conditions of use:
1. 适用于户内、户外。
1. Suitable for indoor and outdoor.
2. 环境温度:不低于–40℃,不高于+40℃。
2. The environment temperature: not less than 40 ℃, no higher than + 40 ℃.
3. 海拔高度不超过 300Om。
3. The altitude does not exceed 300 om.
4. 相对湿度: 不大于 95%(25℃)。
4. The relative humidity: no more than 95% (25 ℃).
5. 电网频率:48~52Hz(5OHz系统) 、58~62Hz(6OHz系统 )。
5. Power grid frequency: 48 ~ 52 hz (5 ohz system), 58 ~ 62 hz (6 ohz system).
6. 电阻安装点正常状态下中性点位移不超过运行相电压的3% 。
6. Resistance to install point operation under the normal displacement of neutral point not more than 3% of the phase voltage.
7. 在相电压作用下,电阻箱工作时间不小于10S。
7. Under the effect of phase voltage, the resistance box working hours are not less than 10 s.
8. 非金属电阻器外套管最小爬电比距不小于20mm/kV,能适用中等污秽场所。
8. Non-metallic resistor outside casing than minimum creepage distance is not less than 20 mm/kV, can apply to medium cesspool.
9. 安装场所的空气中不应含化学腐蚀气体和蒸气,无爆炸性尘埃。
9. Installation site should not contain chemical etching gas in the air and steam, no explosive dust.