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Problems to be noticed in operation of current transformer
Oct 12, 2017

Problems to be noticed in operation of current transformer

(1) the current transformer shall not open the two side in operation, once the two side open, iron loss due to excessive temperature and burned, or the secondary winding voltage and the insulation breakdown, the danger of high voltage electric shock. Therefore, when switching instruments, such as changing current meter, active meter, reactive meter, etc., the current loop should be shorted and then replaced by a measuring instrument. When the meter is tuned, connect it to the two loop, then remove the short connection and check the meter for normal. If the spark is found when the short connection is removed, the current transformer is open and should be re circuited immediately to check the meter

When the loop is not open, the short connection can be removed. When dismantling the current transformer short work, should be standing on the insulation leather pad, in addition to consider the current transformer circuit protection device, after the completion of the work, the protection device can be put into operation.

(2) if the current transformer has a buzzing sound, it should check whether the inner core is loose, and the core bolts can be tightened.

(3) one end of the two side of the current transformer, the crust should be reliably grounded.

(4) when the insulation resistance of the two side line loop of current transformer is lower than 10~20 trillion, it must be dried so that the insulation can be used after recovery.


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