ニュース
ニュース
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06-29 / 2017
Components: technology development of the new generation of molded case circuit breaker
In the low-voltage transmission and distribution network, molded case circuit breaker is one of the important basic components, for those who often occur electricity equipment overload, short circuit of the occasion, can safely and reliably cut off the fault current, to prevent the accident to enda...
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06-28 / 2017
Common Faults and Treatment of residual current circuit breakers
Common Faults and Treatment of residualcurrentcircuit breakers 1. The tripwhen just put into operation 1) Three-phase power lines, including the zero line is not in the same direction through the zero sequence current transformer, correct wiring can be. 2) Install the leakage circuit breaker and th...
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06-27 / 2017
Large role of miniature circuit breaker in fire prevention
Everyone knows that fire prevention is inevitable. At ordinary times, wherever we go, we see the most fire advertisements, and there are some knowledge theories about fire prevention everywhere. The miniature circuit breakers are the most important electrical component to avoid fire. So, what's the...
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06-26 / 2017
The most fundamental reason for home use of fiber termination box
The most fundamental reason for home use of fiber termination box: 1. Fiber termination box, the most basic function: optical fiber protection. Friends who have used fiber optics know that fiber is thinner than hair. It's easy to break, and it's hard for us to connect. 2. Fiber termination box is d...
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06-24 / 2017
The reason for the failure of the distribution box
When we use the distribution box, the failure is inevitable, but be sure to understand the cause of the failure, so that it will be more convenient maintenance, the following is the distribution box manufacturers to explain the reasons for its failure. 1. Low-voltage electrical failure caused by th...
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06-23 / 2017
What items should I pay attention to when installing the meter box?
The electric meter box believed everybody is not strange, we each household has the electric meter, but the electric meter box is puts together the electricity meter, in order to facilitate later repair and management. Then, what items should I pay attention to when installing the meter box? Now le...
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06-22 / 2017
Installation method of residual current circuit breaker in plastic meter box
Installation method of residual current circuit breaker in plastic meter box: 1. Wiring of residual current protector It is necessary to connect the power supply line to the top of the leakage protector, i.e., the power source or the inlet line is marked on the outer shell, and the outlet lines are...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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. ...
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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 ...
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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 ...
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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...
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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...