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词汇 Instrument transformer
分类 英语词汇 英语翻译词典
释义

Instrument transformer

英语百科

Instrument transformer

Current transformers used in metering equipment for three-phase 400 ampere electricity supply
SF6 110 kV current transformer TGFM series, Russia
Clampmeter utilizing a split core
A 120:120 instrument isolation transformer showing two polarity marking conventions

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

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