সংবাদ প্রতিবেদন

সংবাদ

  • 06-21 / 2017

    Design requirements for Voltage Protector

    Voltage Protector(under and ove voltage protection protector) can protect circuit and electricity load effectively, reliably and safely, completely inseparable from the self-complex over-voltage protection of a reasonable, reliable and scientific design methods. If you want to achieve effective, re...

  • 06-20 / 2017

    The unique advantages of over voltage and under voltage protection devices

    People who have used over voltage and under voltage protection devices know their benefits. But do you know what are the unique advantages of the voltage protector? The following are the unique advantages of over voltage and under voltage protection devices: 1. When the single-phase line is under v...

  • 06-17 / 2017

    How to select and use the automatic transfer switch

    Automatic transfer switch is mainly used in emergency power supply system, switch the load circuit automatically from one power source to another power switch, so as to ensure the continuous and reliable operation of important load. Therefore, the automatic transfer switch is often used in the impo...

  • 06-16 / 2017

    The function of molded case circuit breaker

    Molded case circuit breaker has the following common functions: 1. Auxiliary contact (auxiliary switch). They are electrically isolated from the main contact and are suitable for alarm and program switches. In addition to being used for alarm, the standby power can also be switched on in important...

  • 06-15 / 2017

    Detailed introduction of AC contactor

    AC contactor (cj19 magnetic contactor) is used to control the circuit, mainly to break the circuit and realize the remote control circuit. AC contactor mainly uses auxiliary contacts to realize control instructions, so as to achieve the purpose of remote control circuit. The main contact is normall...

  • 06-14 / 2017

    Installation method of domestic power distribution box

    Installation method of domestic power distribution box 1. The surface installationdistribution box, which is mounted on the wall, the foot bolt (tube expansion bolts) fixed, bolt length is generally buried depth (75 ~ 150mm), box bottom plate thickness, the thickness of the nut and washer, plus abo...

  • 06-13 / 2017

    The using requirements of residual current protection device

    The residualcurrentcircuitbreakers, generally referred to as a protector, is widely used and popularized in rural areas as an effective measure to prevent people from electrocution and casualty accidents. It is very important to understand the function of the protector in the distribution system,to...

  • 06-12 / 2017

    Application of Residual Current Circuit Breakers in rural power network

    The capacity of rural distribution network is small, and the load distribution is dispersed. But on the whole, the low voltage power grid can be divided into three layers: distribution transformer station, branch distribution box and user end. Three-level protection is a form of combination of dir...

  • 06-10 / 2017

    How to deal with residual current circuit breakers?

    In the use of residual current circuit breakers, sometimes encountered leakage protector tripping phenomenon. What should happen if there is such a situation? What is the cause of the tripping of the residual current circuit breaker and what should be done? This article will answer you one by one. ...

  • 06-09 / 2017

    Why should fuse be added to surge protection device?

    Why should fuse be added to surgeprotectiondevice? 1. To prevent damage to SPD and its lines due to lightning strikes (for discharge gap type devices). 2. Easy maintenance and replacement SPD. 3. To prevent the line due to SPD aging (such as mov device leakage increases) caused by line failure SPD ...

  • 06-08 / 2017

    How to deal with the fault of RCCB

    Shortcircuit, leakageand other common faultsoften occurs in the use of electrical equipment, the fault will usually cause devastating damage to electrical equipment, so we have to use the installation of a circuit breaker electrical equipment, when the leakage occurs, circuit fault circuit breaker ...

  • 06-07 / 2017

    Design requirements for over voltage and under voltage protection devices

    Over voltage and under voltage protection devices can effectively, reliably and safely realize the protection of the circuit and the power load, the reasonable, reliable and scientific design method of the over voltage and under voltage protection devices is completely possible. If we want to achie...

  • 06-06 / 2017

    How to choose the residual current circuit breakers correctly?

    Indirect shock in different places can cause varying degrees of injury to people, so different residual current circuit breakers should be installed in different places. Here to introduce how to select residual current circuit breaker. For the place where the electric shock is more dangerous, the r...

  • 06-06 / 2017

    The main function of molded case circuit breaker:

    The main function of molded case circuit breaker: 1. Under normal circumstances to connect and disconnect the no-load and load current in high voltage circuit; 2. In system fault, it with protection device and automatic matching device, quickly cut off the fault current, prevent the accident, so as...

  • 06-03 / 2017

    The difference between molded case circuit breaker and miniature circuit breaker

    Molded case circuit breaker (MCCB) is mainly used to protect the low voltage distribution system and motor protection circuit from overload and short circuit. Because of its reliability and stability, it has become a widely used product in industry. Miniature circuit breaker (MCB) also has a wide r...

  • 06-02 / 2017

    AC contactor has good electrical conductivity and high temperature ablation

    AC contactors (cj19 magnetic contactor) are widely used inpower on-offand controllingcircuits. It uses the main contact to open and close the circuit, usesauxiliary contacts to executecontrol instructions. The main contact is generally only normally open contacts, and auxiliary contacts often have ...

  • 06-01 / 2017

    Several points of scientific use of circuit breakers

    DZ4763circuitbreakerrated voltage is greater than or equal to the rated voltage circuit breaker; undervoltage tripping device rated voltage is equal to rated voltage lines; shunt tripping device rated voltage is equal to the supply voltage circuit breaker rated current; DC circuit breaker shell gra...

  • 05-31 / 2017

    Installation specification for PZ30 plastic electrical distribution box

    PZ30 plastic electrical distribution box as a common household distribution box, I believe many friends have heard of this product, and the characteristics and advantages of pz30 distribution box and some friends have a considerable degree of understanding, for her common sense in the tens of milli...

  • 05-28 / 2017

    Considerations for overhaul and maintenance of double power supply

    One. Double power supply in the maintenance of the existing problems 1. Double power automatic switch (200 amp automatic transfer switch), maintenance and repair, the circuit is not complete power, resulting in some mechanical or electrical equipment live. 2. The power supply system both ends of th...

  • 05-27 / 2017

    Principle of contactor

    The working principle of DC contactor (such as cj20 dc contactor): when the coil is energized, the magnetic field generating coil current, the stator generates electromagnetic attraction on the moving core, and drives the contact action: normally closed contact is disconnected, normally open contac...