Although solid-state relays are not as popular as electromagnetic relays, they are also commonly used electrical devices. They are both relays. What are the differences? Let’s talk briefly today. Electromagnetic relay is an electronic control device, which plays the role of automatic adjustment, sa... read more
1. The role of ordinary shunt resistors Ordinary current transformers can convert a primary current with a larger value into a secondary current with a smaller value through a certain transformation ratio, which is used for protection, measurement and other purposes. For example, a current transfor... read more
The difference between solid state relay and ordinary relay The comparison between traditional relays and solid-state relays is related to many types. The difference between electromagnetic relays and corresponding solid-state relays is explained below: 1. Structural difference: The electromagnetic... read more
It is mainly composed of iron core coil, armature (moving iron core), spring, moving contact, static contact and some terminals. Static contacts include normally closed contacts and normally open contacts. Under normal conditions, the moving contact is closed to the normally closed contact. As long... read more
The Latching Relays is an automatic switching element with isolation function. When the change of the excitation amount in the input loop reaches a specified value, the automatic circuit control device can make the controlled electric quantity in the output loop undergo a predetermined step change.... read more
1. The task of relay protection In order to ensure the safe operation of the power supply and distribution system and avoid the impact of overcurrent caused by overload and short circuit on the system, different types of overcurrent protection devices should be installed in the power supply and dis... read more
The role of current transformers: the currents vary greatly in the lines of power generation, transformation, transmission, distribution and power consumption, ranging from several amperes to tens of thousands of amperes. In order to facilitate measurement, protection and control, it needs to be co... read more
Mutual inductor, also known as instrument transformer, is the general name of current transformer and voltage transformer. It can turn high voltage into low voltage and large current into small current, so it can be used for measurement or protection system. Its main function is to convert high vol... read more
The shunt is used to measure the DC current. It is made according to the principle that the DC current produces voltage at both ends of the resistance when it passes through the resistance. It is made of insulating ceramics with uniformly distributed holes. The protective gas from the welding torch... read more
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