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What Are The Functions Of Voltage Transformers And Current Transformers?
May 25, 2018

The transformer is divided into two main categories: voltage transformer and current transformer. The main functions are: transfer the voltage and current information of one system to two side related equipment; transform the high voltage and current of a system to low voltage (standard value) and small current (standard value) of the two side, and make the measuring and measuring instrument The meters and relays are standardized and miniaturized, and the insulation requirements for the two equipment are reduced; the two side equipment and the two system and one system high voltage equipment are well isolated in the electrical field, thus ensuring the safety of the two equipment and the body.

Two are all special transformers! Commonly used in instrument signal acquisition,

Voltage transformer (PT) is the conversion voltage used, generally high voltage (for example, 110KV, 10KV) conversion to ordinary instruments can be used conventional voltage, 380V, 220V, so that the instrument can be displayed. Voltage transformer can be opened two times, but no short circuit.

The current transformer (CT) converts large current signals (hundreds of amperes and thousands of Amperes) to a small current for current meters.

The current transformer can be short circuited two times, but it must not be opened.

In the new installation of PT and CT, when commissioning or replacing PT and CT two cables, it is necessary to check the correctness of PT and CT wiring, that is, the same name ends.


Add: No.38 South Taoyuan Road, Yaozhuang Town,Jiashan County, Jiaxing City, Zhejiang Province, China
Contact person: Elva Zhuang&Sunny Ni
Tel:+86-573-84775555
Fax:+86-573-84776699
Phone:+86-13732570078
E-mail:sales9@great-relay.com
       sunny.ni@great-relay.com