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Remote wireless high-voltage phase analyzer is used for grid connection or ring network phase detection of two high-voltage lines. It can also be used for remote (long-distance) phase detection to determine whether the phase sequence color matches the phase sequence name. The instrument is suitable for live working on 5V~220kV AC transmission lines and secondary side live working, and has high-voltage electrical testing function.
The remote wireless high-voltage phase detector adopts wireless transmission technology, which is safe and reliable to operate, easy to use, and overcomes many disadvantages of wired phase detectors. And using GPS timing technology, two (or more) instruments can be separated by several hundred kilometers.
The editor will introduce to you the judgment techniques of nuclear phase analyzer during nuclear phase. The internal insulation of the transformer of the nuclear phase analyzer is under the action of working voltage for a long time during operation, especially with the increase of voltage level, the electric field strength value borne by the insulation is very high. Partial discharge is easily generated at weak insulation points. The reason for partial discharge is that the electric field is too concentrated at a certain point, or the electric field strength at a certain point is too high, such as solid media with bubbles and impurities not removed completely; Oil contains water, gas, and suspended particles; There is severe electric field distortion at the interface in different combinations of media. The traces of partial discharge often leave only a small spot or tree shaped burn mark on solid insulation. In oil, some decomposed small bubbles appear.
Although the partial discharge time of the nuclear phase analyzer is short and the energy is small, it has great harm. Its long-term existence will have a significant destructive effect on the insulation material. Firstly, the insulation material adjacent to the partial discharge will be directly bombarded by the discharge particles, causing damage to the local insulation. Secondly, the chemical reaction of active gases such as heat, ozone, and nitrogen oxide generated by the discharge will corrode and age the local insulation, increase electrical conductivity, and lead to thermal breakdown. The aging and damage of the internal insulation of transformers in operation often begin with partial discharge.
The nuclear phase analyzer adopts new power electronic detection technology and wireless output technology, which is safe and reliable to operate, easy to use, overcomes many disadvantages of wired nuclear phase detectors, and meets the quality supervision and inspection of national power safety tools. The nuclear phase analyzer has changed the traditional contact measurement method, and the danger of contact measurement is beneficial in ensuring the personal safety of measurement personnel. The measurement method is simple and the measurement results are reliable.
Before use, the transmitter of the device needs to be correctly connected to the power supply, and the power supply of the transmitter should also be turned on. If the installation distance of the transmitter from the ground is less than 30 centimeters, the sensitivity of acceptance will be affected. After turning on the power switch of the receiver, you should also turn on the testing button so that the receiver can enter.
After the timer has ended, the starting waveform should also be displayed. So how do we know that this instrument can be used normally? If there is sound, text, and light display in the same location, it means that this instrument can be used normally.
If using a nuclear phase analyzer on site, it is necessary to have a clear understanding of the job requirements. And the generator should also be connected to the insulation rod. At this time, we need to turn on the power switch, and you will see a green sign displayed on the indicator light of the transmitter.
The nuclear phase analyzer determines:
When in contact with a live wire, an audible signal can be heard while four indicator lights are on. After 5-10 seconds, LED2-4 will turn off, and the sound signal will stop the transmitter. The set working time for voltage measurement is 5-10 seconds, and the transmitter will automatically enter phase measurement. At this time, only one LED indicator light is on. If the sound and light signals continue after 5-10 seconds, it means that the battery is low and needs to be replaced. If measuring another phase of the line, the transmitter needs to be disconnected from the line and wait for LED1 to turn off before placing the transmitter on the line for another voltage measurement. ditto. When the nuclear phase analyzer enters measurement mode, the transmitter emits radio frequency signals into the air, and a portion of the signal is transmitted to the receiver along the line used as an antenna. Once the signal is recognized, the receiver immediately starts working.
