ups供电一段时间后设备突然出现断电,几秒后又恢复供电是什么情况

2025-04-07 02:54:44
推荐回答(1个)
回答1:

如果机器在运转过程中断电,这是机器管路内部存在压力差,即冷凝器处在高压状态,这时压缩机在排气口高压状态下是不能启动的,须在管路压力平衡或者相对较小时启动,这个过程需要时间。
即使这时我们强行通电启动,现在的压缩机启动器多数为PTC(半导体)启动器,这时因刚刚运行时通电,PTC成高温状态,也就是它的阻值是无穷大,它不能给压缩机启动绕组供电,这时只有压缩机运行绕组通电,压缩机不能启动且电流很大,这个电流远远大于过载保护器所承载的电流值,这时过载保护器就断开供电,从而实现了对压缩机的保护。
使用重垂启动器的冰箱同样如是,虽然排出了PTC的供电特性,但压缩机在高压下同样不能启动,这时启动的电流同样大于正常电流,过载保护器同样会断开供电,机器不能工作
重新开始工作需要在断电3-5分钟后,不能低于这个时间
如果压缩机当时没有运行,断电后可以马上通电
如果是停电造成的断电,我们不知道什么时候恢复供电,这个断电时间应该不会小于3分钟,可以不用理会它,如果它断电后马上又恢复供电了,我们还没来得及拔插头,那也没办法,不过别担心,压缩机有过载保护器,它会提供保护的
如果家中电闸掉了,在恢复供电时,可以将冰箱插头拔下来,过几分钟在插上

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