1. Calibration method. The insulation resistance test of the safety energy meter shunt comprehensive tester is to add a certain DC voltage (generally 200V to 1000V) for testing. When calibrating, fi...
In order to study the operating characteristics of the current transformer, and confirm whether it will be full and affect the correctness of the maintenance operation when maintaining external faul...
The rapid development of computer technology, modern communication technology, optoelectronic technology and space technology has put forward new requirements for relay technology. The development o...
What is the purpose of the resistance box? The resistance box is a box type resistor. It is formed by several fixed-value resistors with different resistances connected in a certain way. Next, the ed...
What is the principle of the shunt The shunt is used to measure DC current, and is mainly made based on the principle that a voltage will be generated across the resistor when the DC current passes th...
Do you know the basic working principle of signal relay The basic working principle of the signal relay, the single phase meter shunt is a commonly used device in the automatic control system. It is g...
What are the common problems of relays 1. The relay is not disconnected 1) The load current is greater than the rated switching current of the SSR, which will permanently short-circuit the relay. At t...
A relay is a component that produces a predetermined jump in one or more of its output when the input reaches the specified conditions. The electromagnetic relay can be simply understood as a switch ...
What is the purpose of current transformer Current transformers are very similar to transformers. Transformers are mainly used to change the voltage of the line on the line, while current transformers...
What is the difference between electromagnetic relay and contactor(1) The main function of the relay is for signal detection, transmission, conversion or processing. Its on-off circuit current is usua...
What are the problems with shunts in smart meter applications The smart meter industry is one of the most widely used shunts, and there are different types of shunts on each smart meter. The shunt is ...
How to do a good job in relay testing to achieve accuracy a. Measure contact resistance. Use the resistance profile of the universal meter to measure the resistance of the normally closed contact and ...
Haiyan Weijia Electric Technology Co., Ltd. was established in 2008 with a registered capital of 20 million yuan, the company covers an area of 13 acres, with a total construction area about 12,000 square meters and more than 300 employees.
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