Wireless high-voltage nuclear phase meter, used in phase verification and phase sequence verification of power lines and substations. It has the characteristics of nuclear phase measurement phase sequence, electrical inspection and other functions. It has strong anti-interference and meets (EMC) standard requirements. , adapt to various electromagnetic field interference occasions. The high-voltage phase signal to be measured is taken out by the collector and directly emitted after being processed. Received by the nuclear phase meter and phase comparison, the qualitative results after the nuclear phase. Because this instrument is a wireless transmission, it truly achieves safety, reliability, rapid and accurate, and adapts to various nuclear phase applications. Before the work of the wireless high-voltage nuclear phase analyzer, the generators needed to implement the substations:
1) All the pits and roads in the power station must consider the drainage measures and ensure their normal operation. The drainage holes may be blocked by scale and they must be regularly cleaned;
2) When overhauling the hydraulic machinery part, it is necessary to consider the possibility of water leakage, take measures to prevent flooding equipment, and correctly judge the drainage condition;
3) When doing electrical tests, you should first clarify the wiring conditions of the equipment, determine the test items, methods, steps and safety measures before testing;
4) When disassembling the first and second wiring, obvious markings and records must be made first to prevent the wrong line from being picked up; phase sequence inspection and nuclear phase must be performed before putting into operation after restoring the wiring. After the secondary circuit of the voltage transformer is inspected, the nuclear phase must be performed. The voltage transformers on both sides of the voltage transformer must be placed under the same power supply in order to obtain correct judgments and results. The false synchronous test is performed to pull the isolation knife. At the time of opening, the circuit breakers shall be manually quasi-synchronized and automatically quasi-synchronized for the same period to check the quality of the devices and meters in the same period;
5) During the grid-connected process, multiple meters are compared to determine the correctness. They must be operated strictly according to the operation ticket, and the guardian must be in place;
6) Maintenance and operation personnel must be familiar with the factory's primary and secondary systems, and comply with relevant regulations, specifications, and equipment operating instructions;
7) The synchronization table pointer is not allowed to close when the zero position does not move or when the pointer is already at zero position. Until the generator is not incorporated into the system, it is only temporary when the system reaches the same period, and the synchronization table is stopped at zero position, which may be due to a broken wire inside the meter or other reasons, and may not be closed;
8) When the synchronous table of the high-pressure nuclear phase meter points to the zero position and moves too fast, it indicates that the frequency of the generator to be set and the system is much different. It is not easy to grasp the closing operation time of the circuit breaker, and it is easy to cause non-synchronized period, so it is not allowed to close.
9) When the synchronization table pointer has a zero-crossing instability and there is a bouncing phenomenon, it may be because the internal contacts of the synchronous relay have a stuck phenomenon, so they are not allowed to close.
Eraser Making Machine,Eraser Wrapping Machine,Pencil Eraser Production Line,Pvc Eraser Extruder Machines
gstarstationery , https://www.nbpencilmaking.com