Three-channel DC resistance tester wiring
Electric workers often need to test the DC resistance value of power transformers during their...
2026
hvhipot The loop resistance tester encountered a problem
It is inevitable that there will be problems in the long-term use of the loop...
How to maintain dry-type transformers
Type transformers mainly rely on air convection cooling equipment. Therefore, it has good heat dissipation...
Triple frequency transformer test
三倍频变压器又叫三倍频发生器，常常用于互感器、变压器以及其他感应线圈的耐压试验当中，例如：电压互感器作倍频感应耐压试验、电力变压器进行分相的倍频感应耐压试验，以及感应线圈式的电气产品作倍频感应耐压试验。在这些耐压试验当中，有哪些事项是需要实验者注意的呢？ （1）装置设有过流保护，出厂时设置为额定输出电流的80％。当用于小负荷时，应根据负荷的实际情况重新调整。当升压过程中发生过电流或击穿时，过电流保护动作可保护被测产品，以免引起被测产品事故扩大，应该立即切断三相电源，避免输入电流对三频发电源装置造成损坏。 （2）试验过程当中，样品的容量如果不大，补偿电抗器一般不需要与线路连接。试验产品的电容电流如果过大，则补偿电抗器的两端应与试验产品的两端并联连接以补偿电流，从而起到提高整个测试回路的功率因数以及降低输出电流 （3）由于设备处于过饱和状态，所以对三相线路的接入时间应尽可能短，通常不超过5分钟。测试产品测试时，测试时间不应超过40秒。 （4）当使用三倍频变压器试验装置，所述输出电压由控制箱内接触器线圈电压变成三倍频变压器1/3的输出电压，50HZ电源不能试用于此试验。 以上就是三倍频变压器在试验中需要注意的问题。三倍频变压器操作简单，性能稳定可靠，可以很好的考验试品的绝缘强度以及耐压水平，是保证电力安全不可或缺的测试仪器。
Precautions for high-voltage test transformers
Precautions for high-voltage test transformers: 1. Connect the working circuit according to HV Hipot Electric...
Working principle of contact resistance tester
The switch circuit contact resistance tester is a product independently developed and produced by HV...
Operation problems of zinc oxide arrester tester
1. The main problems in the operation of zinc oxide arresters 1. Because the zinc...
Precautions for transformation ratio tester
Precautions for automatic transformation ratio tester 1. During the measurement period, people should never touch...
Advantages of high-voltage test transformers
Advantages of high-voltage test transformers: (1) High voltage: The primary voltage of the high-voltage test...
Insulation resistance test for the power industry
At present, if the electric power industry wants the normal operation of electrical equipment, so...