HuaTianLogo

Power detection technology / Power detection

Detection Technology

Use method of DC high voltage generator

time:2020/7/4   source:华天电力  reading:312 time

Dc high voltage generator is an instrument providing high voltage DC source. The instrument must be reliably grounded before using the instrument. The staff using DC high voltage generator must have a "high voltage test certificate" professional staff. To use THE DC high voltage generator, the user must comply with the provisions of article 168 "Power safety Regulations", and install two obvious disconnect points before the working power enters the tester. When replacing test items and wiring, disconnect the two power supply points significantly. At the same time, there must be at least three staff on the site, so as to effectively ensure the safety of users.


DC Hipot Tester.png


Before turning on the power supply on the instrument, make sure that the DC high voltage generator is connected to 220V AC power supply, carefully check whether the wiring is correct, and also check whether the wiring of the high voltage discharge pole is reliable. In the process of lifting and lowering the voltage of THE DC high voltage generator, it is necessary to keep the rise and fall slowly. Also try to avoid using instruments over the range. At the end of each test, the potentiometer was first returned to zero, and then the power was cut off before discharging the test subject. The discharge process was divided into two steps. ZS special discharge resistance rod was used to discharge the test subject in the discharge of the large-capacitance test subject. When discharging, the discharge rod should not immediately contact the test, should be gradually close to the test rod, to a certain distance air gap began to free discharge, hiss, when there is no sound available discharge rod discharge, finally directly connected to the ground wire discharge. When the DIRECT current high voltage is above 200kV, although the test personnel wear insulating shoes and are located outside the safe distance, the influence of the spatial electric field distribution of the high-voltage DC ions will lead to different direct current potentials on several human bodies standing nearby. Do not shake hands with each other or touch the ground body, otherwise there will be a slight electric shock phenomenon, which is more obvious in dry areas and winter, but due to low energy, generally will not cause harm to the human body.


Copyright description: all articles, pictures, video and other materials on this site belong to wuhan huatian power automation co., LTD. For use, please contact us; Permission to reprint articles, pictures, video and other materials please quote "from: huatian power".

Dc resistance tester for three-loop transformer  | 2020/7/5 | reading312time Precautions for high voltage transformers  | 2020/7/4 | reading314time return