无功补偿柜,1000KVR电容,电流计算为1000⼀1.732*10=57.7A,选择真空接触器怎么是630A的我不是很清楚,

2025-03-16 06:38:19
推荐回答(5个)
回答1:

国内高压真空接触器厂家一般规格为:200A(250A),400A,630A 。
而国外厂家,如ABB VSC系列 对于10KV,就只有一个型号:VSC 12 400A,以前咨询过,这种真空接触器只能投切6KV的,10KV的还满足不了要求。西门子3TL65 400A,最大开断容性电流250A。
一般计算是按照,真空接触器按计算电流的2.5 ~3 倍,这个只能参考,不能作为选择的标准。还要考虑到开断容性负荷的能力,要降容使用的,就是考虑到过电压(容性负荷电压不能突变),投切涌流等。
而且当有多组电容器组(背靠背)投切时,要进一步降容。
所以选择时,具体可以与真空接触器厂家咨询,告诉是投切电容器的,并且告诉容量,他们会帮你选择的。

回答2:

你提供的数据不清楚,没有电压,怎么来计算电流呢
然后1000KVR电容不会是装在一个柜子里面吧,装一个柜子里面选630肯定是不对的,如果装几个柜子选630的有可能。

回答3:

一般切断容性电流,真空接触器的额定电流要选到2倍的负荷电流。但你查一下你选用接触器的规格,可能没有更合适的规格。

回答4:

电压呢?

回答5:

选160A可以

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