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ニュース

ニュース

  • 08-18 / 2017

    Why should a fuse or circuit breaker be installed in the SPD circuit?

    The internal core of surge protection device is a Zinc Oxide varistor. Zinc Oxide is composed of grains and the grains are separated by a grain boundary layer with a P-N junction semiconductor structure. These grain boundary layers determine the V-I characteristics of varistors. When the surge curr...

  • 08-22 / 2017

    Structure features of electrical isolation switch

    The electrical isolation switch adopts modular design, which is suitable for connection and breaking circuit or electrical isolation. More than 1000A is only used for electrical isolation. The isolation switch adopts the spring energy storage, instantaneous release acceleration closing mechanism, a...

  • 08-24 / 2017

    Can the DC molded case circuit be used only in the DC system?

    AC molded case circuit breaker can not be used in DC circuit. Because AC system and DC system have different grounding modes, the breaking capacity of molded case circuit breaker will be greatly affected. Can the DC mccb be used only in the DC system? The main difference between DC molded case circ...

  • 08-28 / 2017

    Application comparison between DC molded case circuit breaker and DC miniature circuit breaker

    The DC molded case circuit breaker and the DC miniature circuit breakers are widely used in circuit breakers. Then, what are the differences between the two circuit breakers in our actual application? Here are some brief analyses. 1. DC molded case circuit breaker is used in plastic structure, its ...

  • 08-29 / 2017

    What are the main points for the daily maintenance of molded case circuit breakers?

    In order to make molded case circuit breaker more comfortable operation, in its maintenance, we can not ignore, if you regularly maintain, then it will be many times higher life expectancy, why not? For its work in good condition, maintenance and maintenance need to be strengthened. So, what are th...

  • 08-30 / 2017

    The use of control protective switch

    Control protective switch products using a modular single product structure type, integrated the traditional circuit breaker (fuse), contactors, overload (or overcurrent, phase failure) protection relays, starters, isolators and other major functions, Mainly used for AC 50Hz (60Hz), rated voltage t...

  • 09-01 / 2017

    The role of Voltage Protection Device | VPD

    With the development of the electric power industry, electricity now has been accompanied by every detail of our lives, so that the protection for the power industry, began to get more and more attention, because the circuit in the daily work, it is easy because of overvoltage or undervoltage and a ...

  • 09-20 / 2017

    Common sense of residual current circuit breakers

    There are many common sense of residual current circuit breakers in life if they can understand some of these attempts can further guarantee the security of electricity, a lot of residual current breaker every month according to the time, which is explicitly proposed in this device, the residual cu...

  • 12-16 / 2017

    Product Overview of molded case circuit breaker

    Molded case circuit breaker is also known as a modular circuit breaker. All parts are sealed in a plastic housing, and the auxiliary contacts, the undervoltage release, and the shunt release are modular. Because of the very compact structure, the molded case circuit breaker is virtually out of repa...

  • 12-29 / 2017

    Installation requirements for transparent meter box

    In modern families, more and more wires and cables are used, such as telephone line, cable TV line, broadband network line, audio line, security alarm signal line and so on. Different cable has different technical requirements, but the traditional family style because the wiring construction is not...

  • 01-06 / 2018

    Comparison of molded case circuit breaker and frame circuit breaker

    The molded case circuit breaker, as well as the frame circuit breaker, has been widely used in the current circuit breaker. So what are the differences between these two kinds of circuit breakers in the actual application process, and the following is briefly analyzed. 1. The circuit breaker is use...

  • 01-24 / 2018

    Analysis of the micro source characteristics of the energy Internet - DC Miniature circuit breaker

    The distributed energy power generation in the regional energy Internet mainly includes wind power generation, photovoltaic generation, gas turbine power generation and fuel cell. It has the characteristics of energy saving, environmental protection, small capacity and plug and play. When the electr...

  • 01-27 / 2018

    What are the features of the material used in the transparent meter box

    Know that electric meter box production of the public know that its production is the need for composite resin and reinforced materials and other materials, and its main purpose is to better protect it, so as to protect the public's electricity safety. So what are the characteristics of its material...

  • 03-06 / 2018

    Safety regulations of circuit breakers

    In summer, miniaturecircuit breakers are particularly important, so how to use a miniaturecircuit breaker safely? The following summarizes the safe use of circuit breakers, I hope to help you. Safety regulationsof circuit breakers 1. When the circuit of miniaturecircuit breaker is well connected, i...

  • 03-09 / 2018

    Comparison of the application of the Molded case circuit breaker and the frame circuit breaker

    Molded Case Circuit Breaker, like circuit breakers, have been widely used as circuit breakers. So what are the differences between these two types of circuit breakers in the actual application process? The smart low voltage circuit breaker manufacturers following the introduction of the switch facto...

  • 03-15 / 2018

    Development of AC contactor

    AC contactor is one of the indispensable devices in AC current. In recent years, various contactors are constantly emerging, and contactors are developing towards diversification, electrical ac contactor manufacturers bringing people more and more different choices. The AC contactor is made as a wh...

  • 03-19 / 2018

    Differences between voltage protection and leakage protection and their respective sites

    The protection object of over voltage and under voltage protection devices is electrical equipment. The key protection object of electric leakage protection is the person. The over voltage protector is to detect the power supply voltage and decide whether to act or not, and the leakage protector is ...

  • 03-22 / 2018

    The function of the plastic shell circuit breaker

    Molded Case Circuit Breaker MCCB is a common circuit breaker, which is widely used in life. Electricity is closely related to us, so we really need to understand the characteristics and applications of molded case circuit breakers. Molded case circuit breakers are generally divided into air circuit ...

  • 03-26 / 2018

    AC contactor function

    Wct household ac contactor function: the main work of the AC contactor is to connect and disconnect the electrical circuit. Two kinds of contact is used to reduce the damage caused by the arc during the break and prolong the life of the main contact. It is easy to replace the auxiliary contact and t...

  • 03-29 / 2018

    EPS emergency power supply summary

    The code for fire protection design of high-rise buildings (GB50045-95) is the requirement for the power supply of fire facilities. A fire fighting facility for a high-rise building must be designed according to the first level load and distribution. The design specifications for power supply and di...