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What is the connection coefficient of current transformer core material?What are the wiring methods?

2019-04-02 17:39:05

     What is the connection coefficient of current transformer core material?What are the wiring methods?

     The ratio of the current passing through the relay to the secondary current transformer core material is called the wiring coefficient of current transformer core material, i.e. Kc=Ik/I2

Ik-- current in the relay;

12-- secondary current of current transformer core material;

Connection coefficient is an important parameter in setting calculation of relay protection.

      What are the wiring methods of the secondary winding?

     According to the different requirements of relay protection and automatic device, the secondary winding of current transformer usually has the following wiring modes:

1.complete (three-phase) star connection; 

2.The essay is not complete (two-phase) star connection; 

3.Triangle connection is made;

4.Of three phases and connection to obtain zero sequence current wiring; 

5.it is even two phase difference connection;

6.In the one phase, connect the current transformer core material in series; 

7.The connection of two current transformer core material in parallel is used during liraglutide phase.

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