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What Is An Electromagnetic Current Transformer? And Principle
Jan 19, 2018

What is an electromagnetic current transformer? And principle

High voltage current transformer is the power system will transform high voltage signal in power grid transmission for low voltage current signal, thereby providing standard system for current signal measurement, monitoring, relay protection, automatic devices, unified (traditional analog, modern digital) device; at the same time to meet the electrical isolation, important equipment to ensure personal safety and electrical appliances.


The high voltage current transformer can be divided into electromagnetic current transformer and electronic current transformer according to the principle. The electronic current transformer can be divided into active and passive magneto optic glass type according to the working mode of one time sensor.


1 electromagnetic current transformer


Electromagnetic current transformer (electromagnetic current transformer) is the transformer of current transformation by electromagnetic induction principle.


It has been widely used in the power system. This is only an analysis of the main saturation problem.


There are two main types of current transformer saturation: steady saturation and transient saturation. The main reason is that the steady state saturation is because the primary current is too large to enter the saturation area of the current transformer, which causes the two current can not be correctly transferred to the primary current. Transient saturation is due to the existence of a large number of non periodic components and into the saturation region of the current transformer.


Steady state simulation analysis of current transformer

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Current transformer set up in ATP

  

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