News

  • Contents and requirements of daily maintenance of molded case circuit breakers

    Contents and requirements of daily maintenance of molded case circuit breakers

    The daily maintenance of molded case circuit breakers is the basic work of equipment maintenance and must be institutionalized and standardized. Timely maintenance of equipment should formulate work quotas and material consumption quotas, and evaluate them according to t...
    Read more
  • Circuit breaker- What is it and how does it work?

    Circuit breaker- What is it and how does it work?

    Circuit Breaker (MCB)- A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected...
    Read more
  • What are the advantages of waterproof distribution box?

    What are the advantages of waterproof distribution box?

    When designing a waterproof distribution box, the protection level is the main content of the key design scheme. Sometimes, in order to highlight this point, the waterproof distribution box is also specially formulated with a protective protrusion layer to effectively av...
    Read more
  • What is a voltage transformer?

    What is a voltage transformer?

    Voltage transformers are indispensable electrical appliances in power transmission and power supply systems such as power stations and substations. A precision voltage transformer is an instrument used to expand the limit, measure voltage, power and electrical energy. A ...
    Read more
  • What are the differences between miniature circuit breakers and molded case circuit breakers

    What are the differences between miniature circuit breakers and molded case circuit breakers

    The main function of miniature circuit breakers (abbreviated in English) MCB) circuit breaker enclosures and large quantities of circuit breaker products is to provide maintenance for building electrical terminal distribution equipment. Since both belong to circuit break...
    Read more
  • What is a thermal relay? The principle and function of thermal relay, where is it used?

    What is a thermal relay? The principle and function of thermal relay, where is it used?

    Thermal overload relays are key electrical devices for motor drag. The principle is to use the physical properties of the bimetal sheet to deform due to overheating, which can be regarded as a normally open and normally closed power switch, and is connected to the contro...
    Read more
  • Selection of dry-type transformers and oil-immersed power transformers

    Selection of dry-type transformers and oil-immersed power transformers

    How to choose a transformer: dry-type transformers and oil-immersed power transformers A transformer is a commonly used and efficient facility that immediately takes high voltage from a power plant and converts it to a lower operating voltage. In this way, low-voltage m...
    Read more
  • How to choose a contactor, factors to be considered when choosing a contactor, and steps for choosing a contactor

    How to choose a contactor, factors to be considered when choosing a contactor, and steps for choosing a contactor

    1. The office environment should be considered when choosing an AC contactor. The key is to consider the following factors. ①The AC contactor should be used to control the AC load, and the DC contactor should be used for the DC load ②The rated working current of the ma...
    Read more
  • Waterproof distribution box, how good is it?

    Waterproof distribution box, how good is it?

    When designing a waterproof distribution box, the protection level is the specific content of an important design plan. Sometimes, in order to better highlight this, the waterproof distribution box is also specially formulated with a safety protection highlight layer to effectively prevent the pe...
    Read more
  • What is the difference between an AC contactor and a DC contactor?

    What is the difference between an AC contactor and a DC contactor?

    Contactor or direct current means that the main power circuit of the contactor is used for alternating current circuit or direct current circuit. 1) The appearance of DC contactor and AC contactor. 2) Countermeasures for overvoltage and arc extinguishing of the contactor. For AC circuits, when th...
    Read more
  • LED indicator circuit

    LED indicator circuit

    LED indicator circuit. 1. General DC voltage indicator circuit. The circuit is as above, generally LED + current limiting resistor. As an indicator light, the LED current does not need to be very large, generally 1-2ma. The smaller the current, the more durable the LED light is. It can be calcula...
    Read more
  • Button switch principle, revealing the working mode of button switch

    Button switch principle, revealing the working mode of button switch

    A pusha hrefis a switch that uses a button to facilitate the opening or disconnection of the dynamic contact point and the static data contact point of the equipment transmission mechanism, and then completes the replacement of the power circuit according to this. Therefore, by fully grasping the...
    Read more
  • There are several kinds of button switches, re-recognize button switches

    There are several kinds of button switches, re-recognize button switches

    Everyone has been touching all kinds of household appliances in life. In fact, electrical engineering has always been a double-edged sword. If used properly, it will benefit everyone. If it is not good, unexpected disasters will occur. The key to switching power supply security is in the network ...
    Read more
  • What is an isolating switch? What is the role of the isolating switch? how to choose?

    What is an isolating switch? What is the role of the isolating switch? how to choose?

    What is an isolating switch? What is the function of the isolator? How to choose? The isolating switch everyone was referring to was the one with the small machete gate open. Disconnect the switching power supply efficiently. Under high voltage, the isolation switch must not be loaded. Transporta...
    Read more
  • Precautions for leakage circuit breakers

    Precautions for leakage circuit breakers

    Installation 1. Before installation, check whether the data on the nameplate of the leakage circuit breaker is consistent with the usage requirements. 2. Do not install too close to the high-current bus and AC contactor. 3. When the operating current of the leakage circuit breaker is greater tha...
    Read more
  • What is a smart circuit breaker ?

    What is a smart circuit breaker ?

    The intelligent circuit breaker mechanism is located on the front of the circuit breaker. The mechanism adopts a five-bar linkage free release mechanism and is designed in the form of energy storage. During the use of the smart circuit breaker, the mechanism is always in the pre-energy storage p...
    Read more
  • Overview of AC contactor

    Overview of AC contactor

    AC contactors often use three arc extinguishing methods: double-fault electric arc extinguishing, longitudinal slit arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the moving and static contacts in the opening and closing process. Contactors with a capa...
    Read more
  • Function of isolation switch

    Function of isolation switch

    Features 1. After opening, establish a reliable insulation gap, and separate the equipment or lines that need to be overhauled from the power supply with an obvious disconnection point to ensure the safety of overhaul personnel and equipment . 2. Change lines according to operational needs. 3. I...
    Read more
123 Next > >> Page 1 / 3