继电器保护装置 protective relay unit
继电器保护测量仪 HYJB
继电器保护测试仪 Relay Tester
量度继电器和保护装置 Measuring relays and protection equipment
测量继电器和保护设备 Measuring relays and protection equipment
继电器失灵保护装置 underreaching protection ; relay underreaching protection
继电器后备保护[装置 relay back up
测量继电器和保护装置 Measuring relays and protection equipment
气体继电器保护是电力变压器的一种基本保护。
Protection by gas relay is one of the elemental protection of transformer.
增加外部过载保护是防止电机烧毁的有效手段，如热继电器保护。
Increase external overload protection is to prevent motor burned effective means, such as thermal relay protection.
介绍了风机、水泵类负载起动时间大于15秒以上时，采用热继电器保护的方法，及控制线路在风机上应用的效果。
The article introduces detailedly the methods which are used to protect the hot relays when the fans and pumps loaded starting time is over 15 seconds.
应用推荐