The technical constraints of shunts are different from standard resistors. Precision shunts are high-precision resistors with low ohmic values. When hundreds of amperes of current must be measured, ...
The protection object of the thermal relay is the motor, so the technical performance, starting situation, load nature of the motor and the allowable overload capacity of the motor should be understo...
1. The method of interlocking two intermediate relays If it is assumed that the relay power supply is a power supply that will not lose power for a long time: The power of the attraction loop of the...
On the core and coil. There is eddy current in the electromagnet core of AC contactor, so the electromagnet core is made one by one and stacked together. To prevent electromagnetic release at the mome...
Why are permanent magnet household AC contactors widely used The carrying current of the household AC contactor is very large. Generally, the internal pull-in coil controls its action or not, and the ...
Low-voltage molded case circuit breakers are one of the more important protection and control components in low-voltage electrical appliances. They are mainly used in low-voltage power distribution ...
Nowadays, household AC contactors are widely used in family life, which can better protect household electrical appliances, and can be used as a very professional and safe start-up control device, so ...
With the gradual implementation of the ten major industry revitalization policies, the demand and application fields of relays in my country will continue to grow. Traditional electromechanical relays...
A relay (English name: relay) is an electrical control device. It is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit...
Divided into two layers, the upper layer is the electromagnetic system, and the lower layer is the contact system. The magnetic latching relay system adopts a flat direct-acting magnetic holding magne...
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...
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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