• What are the classifications of relays?

    What are the classifications of relays?

    1. According to the working principle or structural characteristics of the relay: 1) Electromagnetic relay: an electrical relay that uses the suction force generated between the electromagnet core and the armature by the current in the input circuit to work.2) Solid state relay: refers to a relay wh... read more

    23-04-2021 News
  • What are the main functions of the relay?

    What are the main functions of the relay?

    Relay is an automatic switching element with isolation function, which is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one of the most important control elements. Electricity Meter Components Relays generally hav... read more

    16-04-2021 News
  • Do you know the development history of relays?

    Do you know the development history of relays?

    A 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 when the change in the input quantity (excitation quantity) meets the specified requirements. It has an interactive relat... read more

    09-04-2021 News
  • How to choose relays according to requirements?

    How to choose relays according to requirements?

    How to choose a relay:1. First understand the necessary conditions  ①The power supply voltage of the control circuit, the maximum current that can be provided;   ②Voltage and current in the controlled circuit;   ③How many sets and types of contacts are needed for the controlled circuit. When selecti... read more

    31-03-2021 Industry News
  • What is the test method of the relay?

    What is the test method of the relay?

    Relay test ①Measure contact resistance: Use the electrical barrier of a multimeter to measure the resistance of the normally closed contact and the moving point. The resistance value should be 0; and the resistance value of the normally open contact and the moving point is infinite. From this, it c... read more

    26-03-2021 Industry News
  • Advantages and disadvantages of electromagnetic relays and solid state relays

    Advantages and disadvantages of electromagnetic relays and solid state relays

    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

    19-03-2021 Industry News
  • What is the difference between ordinary current transformer and zero sequence current transformer?

    What is the difference between ordinary current transformer and zero sequence current transformer?

    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

    12-03-2021 Industry News
  • What is the difference between solid state relay and ordinary relay?

    What is the difference between solid state relay and ordinary relay?

    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

    05-03-2021 Industry News
  • How does an electromagnetic relay work?

    How does an electromagnetic relay work?

    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

    27-02-2021 Industry News