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Why the current transformer is burned in use
Dec 07, 2017

Why the current transformer is burned in use

I believe that the current transformer is not a stranger, especially in physics, it is known that it is made by the principle of electromagnetic induction. Sometimes the large current in a circuit can not be measured directly. The role of a current transformer is to convert a larger current to a small current and then measure it. However, the current transformer in the work will be burned, this is a lot of people puzzled, the following is to analyze the causes of burning and measures.

There are many reasons for the burning of the current transformer, and the common one is the following. The current transformer two open to generate high voltage current transformer burned; the long time use of insulation aging, local breakdown or discharge, over voltage, the current transformer heating burn; current transformer connected to a row of aluminum surface oxidation excessive contact resistance is too large, the fever caused by the current transformer burn; user overload operation time is long, the current transformer fever burned.

How to avoid the burning of the current transformer? First, the circuit breaker is installed to avoid the branch failure and the whole line blackout, especially to ensure the reliable trip of the branch circuit breaker. Then the current transformer is connected to the back of the circuit breaker to ensure the correct operation of the breaker and the lightning arrester when the transformer fails. It is necessary to enhance the insulation test of user current transformer and lightning arrester, and find out the aging degree of transformer and arrester insulation early, and replace it in time, so as to avoid the occurrence of blackout due to the burn out of transformer. Finally, it is necessary to clean up the equipment regularly to reduce the pollution and avoid the insulation.

When the current transformer is used, it is necessary to carefully check whether the two circuits are broken, whether the contact resistance is too large and the most important thing is that it can not run over the overload. In addition, it is also necessary to maintain and maintain the current transformer. If the insulation aging is found to be replaced in time, it should be cleaned regularly to reduce pollution. In this way, the current transformer can be used more safely and the service life is longer.


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