Monday, September 17, 2012

Methods to Maintain and Preserve Transformer

Brief introduction of transformer

Transformer is one of the most normal electric appliances in distribution network. Transformer which consists of iron core and coil is used to exchange alternating voltage, current and impedance. Whether the mains transformers operate normally affect the safety of distribution network, so it is important to maintain it carefully.

Details to maintain transformer

Daily inspection, maintenance and regular test are extremely vital, and this procedure consists of many steps. Step1, according to its appearance we can check whether the external of transformer imports oil or the components smoke or discharge. Faults must be eliminated and oil should be added at once, and the problems that components become less crowded or loose contact should be solved. Step2, EI transformers in normal operation will produce a little noise, while its sound will change if there is something wrong. We should find out the reasons according to specific situation. Step3, check the greasy dirt and dust in sleeve, and clean them in time to prevent circuits from shorting caused by, moisture and lightening. So there will be staffs to test them every two months. Step 4, observe the color of oil and test the temperature regularly, especially in the bad weather. And temperature of top layer should not above 45 degree. Step5, examine the insulation resistance and the fastness of every lead. And we should pay more attention to the temperature of joint. Step6, measure more about electrical load in the rush hour, and adjust transformer with unbalanced three-phase current, in order to prevent the electric line from burning out. Step7, change and examine the fuss in regular time, in addition, aluminum wire is forbidden taking place of fuse. Fuse should match with transformer.

Prevent the damage from external

In the first place, select an appropriate place for installation and it should be next to the load centre, which should be controlled within 0.5km. At the same time, it should not be installed in the area of low-lying. Secondly, do not install low pressure metering box on distribution transformer, and the long time operation will damage the glass of metering box. Thirdly, tap switch is no allowed to be adjusted personally, in case that tap switch cannot be operated appropriately. Fourthly, add insulating cover to prevent natural disaster and damage from external. And we should also add insulating cover in the area with narrow road and forest with animals. Last but not the least, examine the line regularly and clear line gate to avoid some faults. Examine all the details to make sure the normal operation of transformer. Only in this way can you operate it in excellent condition.

This article is come from:http://cell.battery-products.com/mains-transformer/methods-to-maintain-and-preserve-transformer.htm

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