半导体脱扣器电路
semiconductor release circuit
测量用变压器电压检验
potential transformer voltage check
低压电器电触头
low voltage apparatus electrical contacts
漏电脱扣器的改进设计
Improved Design of Leakage Trip Mechanism
施加电压电压测试
voltage source voltage measurement
压电电压常数
piezoelectric voltage coefficient
Piezoelectric voltage constant
压电电压反馈
piezoelectric voltage feedback
智能脱扣器电路
intelligent release circuit
过、欠电压型
over or under bias-voltage mode
过压欠压保护器
Overvoltage or Undervoltage Protector
活塞式欠电压继电器
plunger type undervoltage relay