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4方线能带多大功率
更新时间: 2021-04-08 00:14:41  

1、国家标准4平方的线载流量是30A,负荷6千瓦,8千瓦差不多就有些发热了。

2、国标允许的长期电流:4平方铜芯电线是25-32A。这是理论安全数值,极限数值是8000w。电表应该选用10(20)安培的。

3、按公式计算,三相(380v)应该不大于,铜:28kw;铝:22kw(功率因数为1时,而且距离不远),单相时(220v)不应大于,铜:10kw;铝:7kw。

4、在不同的敷设方式、环境温度、导线温度等条件下,绝缘导线的安全载流量不同,所带的负载功率亦不同。

关键词: 大功率

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