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The transformer current of the primary line and transformer of the substation needs to be tested before and after the installation of the equipment, so as to avoid the failure of the equipment to operate normally or the equipment failure and the secondary protection misoperation caused by the polarity error, resulting in the substation power failure。
Therefore, in order to improve the level of line operation and maintenance management, it is necessary to regularly test the current of the line, provide technical support for timely and effective disposal of hidden current hazards, improve the operating environment of the overhead line, and ensure the safe and stable operation of the overhead line。At present, there are two methods for CT polarity test: one is to use a dry battery in the primary side of the shock charge requirements，Use a pointer multimeter on the secondary side for measurement，This method is more traditional，When encountering CT winding with relatively large variable ratio，The multimeter pointer is not deflected significantly，And the development of digital digitization，The pointer multimeter is being phased out.Another method uses CT polarity tester to test CT polarity，CTZ comprehensive characteristic test instrument is larger，An external power supply is required，Complex operation，It takes five minutes to measure a winding，Relatively long time。Traditional testing methods, from an economic and technical point of view, planned maintenance has great limitations, such as regular testing and maintenance caused a lot of direct and indirect economic waste, many insulation defects and potential failures can not be found in time。The test line current cannot be shortened, and normal operation cannot be performed when the line is powered。It is very important to construct a handheld CT polarity test device in order to evaluate and predict the maintenance work effectively。
So the company provides a new solution to solve this problem。
TC-80 polarity detector is a combination CT polarity detector with communication function, which can improve the safety and convenience of CT polarity detection。
First, TC-80 polarity tester features:
1.Easy to carry, easy to operate, intelligent testing。Field personnel can complete the test alone
2.Chinese display, sound prompt。Suitable for any series of transformer polarity test from small to large
3.Especially for the polarity check of the field transformer secondary connection that has been connected to the substation secondary screen。The device can be verified together with the polarity of the secondary current line
4.Rechargeable lithium battery power supply, convenient USB port charging without replacing the battery trouble。
twoTechnical features:
Working environment: -20 ℃ -+ 60℃ (normal) ‐30℃ -+ 70℃ (limit)
Power supply: lithium battery
Volume: 20X40X100(mm)
重量：0.5㎏
