欠压脱扣器  under voltage release; less voltage tripper

欠电压电驿  under voltage relay

欠压、电压低  Undervoltage

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

电压、电压量  voltage

电压-电压控制  double-voltage control

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  piezo-voltage; Potential

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

换流变压器压器  convertor transformer

电压欠准试验  under-voltage test

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