protective voltage transformer

A voltage measuring transformer decreases voltage from 330 kV to 100 kV for protective circuit.

电压测量变压器将电压从300千伏降低到100千伏以保护电路。

Introduces the constitutes of low voltage protection system of distributing transformer, analyzes the failure reason, puts forward concrete measures of improving low voltage protective reliability.

介绍了配电变压器低压保护的组成，对故障原因进行了分析，提出了提高低压保护可靠性的具体措施。

In this paper, a protective circuit for power supply of lasers without the use of low-voltage transformer and relay is presented.

本文介绍了一种不用低压变压器和继电器激光电源保护电路。