NEWS

NEWS

  • 12-17 / 2018

    Principle of Overvoltage and Undervoltage Protector

    Why do we use under-voltage protectors in our daily life? What are the advantages of using over-voltage protectors? Today, I want to share with you the function of voltage protection devices. All electrical appliances in use should avoid too high or too low grid voltage. Both industrial equipment a...

  • 12-14 / 2018

    What are the requirements of Auto Reclosing Circuit Breaker in use?

    Everyone knows that the quality of materials directly affects the life of Auto Reclosing Circuit Breaker, but in fact, the details in the use process are also very important. What are the requirements when using Auto Reclosing Circuit Breaker? 1. When the leakage current is used as a reclosing circ...

  • 12-12 / 2018

    Background of Arc Fault Circuit Breaker

    Arc Fault Circuit Breaker technology is a new circuit protection technology. Its main function is to prevent fire caused by fault arc. When arc fault occurs, because the current intensity is small, which is lower than the setting value of over-current protection widely installed in power system, esp...

  • 12-10 / 2018

    What are the main uses of household AC contactors?

    Contactor is an automatic control device. Contactors are mainly used for frequently switching on or disconnecting AC and DC circuits. They have large control capacity and can be operated over long distances. They can achieve timing operation, interlocking control, various quantitative control and vo...

  • 12-07 / 2018

    Why does the plastic meter box need insulation resistance?

    Meter boxes are widely used in various fields of the national economy. They are important support for the industry, national defense construction and major project construction. They are the important basic industries of the national economy and the necessities of people's daily life. Electric meter...

  • 12-05 / 2018

    Working Principle of Low Voltage Circuit Breaker

    Low-voltage circuit breakers are mostly used for frequent switching and starting motors, to protect electrical appliances and motors. When they have serious overload and short circuit. When under-voltage and other faults occur, the circuit can be automatically cut off. Therefore, LV circuit breaker ...

  • 11-30 / 2018

    What are contactors and what are their characteristics?

    Household Contactor refer to electrical appliances in industry that use coil current to generate magnetic field to close the contacts so as to control the load. Contactors have the advantages of high operating frequency, long service life, reliable operation, stable performance, low cost and simple...

  • 11-28 / 2018

    The Concept of Low Voltage Circuit Breaker

    1. The Concept of Low Voltage Circuit Breaker Low-voltage circuit breaker is also known as automatic air switch or automatic air circuit breaker, referred to as circuit breaker. It is not only a manual switch, but also can automatically protect against voltage loss, undervoltage, overload and short...

  • 11-26 / 2018

    Maintenance of AC Contactors

    Maintenance of AC contactors is generally divided into operation inspection and stop maintenance. I. In the operation of equipment, AC Household Contactor need to be inspected as follows: 1. Whether the load current passed is within the rated current range of the AC contactor; 2. Whether the divid...

  • 11-23 / 2018

    How to choose voltage protection devices?

    The use of voltage protection devices greatly reduces the harm of over-voltage or under-voltage to circuit and electric load. It is equivalent to a small intellectualized switching protection device, which is mainly used in the circuit with current and voltage less than 63A. It is an important prote...

  • 11-21 / 2018

    The working principle of ACB circuit breaker

    ACB circuit breaker is a kind of switching device which can turn on, load and break the current in normal circuit and can turn on, load and break the current in abnormal circuit within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers ...

  • 11-17 / 2018

    Working principle of automatic reclosing switch

    Auto Reclosing Circuit Breaker is widely used in overhead line transmission and overhead line power supply lines on the effective anti-accident measures (cable transmission, power supply can not be used). That is, when the line fails, after the circuit breaker is tripped by relay protection, the au...

  • 11-15 / 2018

    Working principle of Auto Reclosing Circuit Breaker

    Auto Reclosing Circuit Breaker is widely used in overhead line transmission and overhead line power supply lines on the effective anti-accident measures (cable transmission, power supply can not be used). That is, when the line fails, after the circuit breaker is tripped by relay protection, the au...

  • 11-13 / 2018

    What are the characteristics of PV Auto Reclosing?

    The Auto Reclosing Circuit Breaker is an automatic device which automatically puts in the circuit breaker after the break-off due to the fault. The operation experience of power system shows that most of the faults of overhead lines are transient permanent faults, generally less than 10%. Therefore,...

  • 11-10 / 2018

    How much do you know about contactors?

    From the point of view of usage, Household Contactor can be divided into: 1. Industrial contactors are mostly general models. The common models are CJX2 series, CJ20 series and CJT1 Series in CJ series. 2. Architectural and household contactors, ABBESB series, Hummer HBC1 series, CHINT NCH8 series,...

  • 11-08 / 2018

    Function and application of internal accessories for air circuit breakers

    At present, in our market, air circuit breakers are mainly divided into DW15, DW16, DW17 (ME), DW45 and other series, the products are composed of ontology and accessories. ACB circuit breaker itself does not have any accessories, but it can effectively divide and close the circuit, automatically cu...

  • 11-06 / 2018

    Product features of PC transparent plastic meter box :

    Product features of PC transparent plastic meter box: 1. The product is made of transparent polycarbonate (PC) and ABS engineering plastics. It has the functions of power security protection, user separation control, data acquisition, etc. Electric meter box can maximize the reliability of electric...

  • 11-03 / 2018

    How harmonic protection works

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  • 11-03 / 2018

    Common fault analysis of AC contactors

    1. Coil fault There are many reasons for coil burnout, such as high power supply voltage, over 110% of the rated voltage may burn the coil. On the other hand, the power supply voltage is too low, below 85% of the rated value may also burn the contactor coil, which is due to the contactor armature c...

  • 11-01 / 2018

    What is the difference between C-type and D-type of miniature circuit breakers?

    Let's analyze the type of tripping curve. 1. A-type tripping curve: magnetic tripping current is (2-3) In, suitable for protection of semiconductor electronic circuits, with small power supply transformer measuring circuit or line length and low current system. 2. B-type tripping curve: magnetic tr...

  • 10-30 / 2018

    Application of low voltage circuit breaker in power supply system

    Circuit breaker is a kind of switching device which can close, load and break the current under the condition of normal circuit and can close, load and break the current under the condition of abnormal circuit in the prescribed time. Household circuit breaker are divided into high-voltage circuit br...

  • 10-27 / 2018

    Understanding the meter box

    The material used for making the low voltage cable branch box is a resin matrix composite material. The main components of the box are ABS engineering plastics, polycarbonate transparent PC materials, DMC, SMC four materials injection molding, pressing. There is a distribution board in the plastic ...

  • 10-25 / 2018

    Malfunction and solution of air circuit breaker

    Air circuit breakers are often referred to as frame breakers because they are wrapped in a frame, which is still common. When the main contact is not closed or closed, the air circuit breaker will cause some unnecessary harm. There are several possible reasons for this study: (1) Due to the high cu...

  • 10-23 / 2018

    Function and working principle of circuit breaker

    Circuit breaker is a switching device which can close, load and break the current under normal circuit conditions, and can carry and break the current under abnormal circuit conditions (including short circuit conditions) within a specified time. China Circuit Breaker can be used to distribute elect...

  • 10-20 / 2018

    Site layout and installation instructions for electric meter box

    The electric meter box is usually mounted on a mounting plate, the installation board is called kilowatt hour meter, or the meter board. When the meters are installed side by side, the center distance should not be less than 200mm. The meter box should be installed near the incoming line. The instal...

  • 10-18 / 2018

    Structure, principle and application of contactor

    Contactors are certainly familiar to power workers. It is no exaggeration to say that contactors are the most frequently used electrical components in power operation so far. Contactors are not only the electronic control cabinets, but also the effective components of distribution cabinets. They pla...

  • 10-16 / 2018

    What are the main measures to improve the life of contactors?

    Household Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), which are used in electric power, distribution and power applications. Contactors in a broad sense refer to the use of coil current in industrial electricity to generate magnetic field, so that the conta...

  • 10-13 / 2018

    How does the air circuit breaker work?

    Introduction of air circuit breaker Air circuit breaker, also known as frame circuit breaker, is a kind of mechanical switching apparatus which can turn on, load and break the current under the condition of normal circuit, and can also turn on, load and break the current under the condition of speci...

  • 10-11 / 2018

    What is the circuit breaker and what is its working principle?

    Circuit breaker is a switching device which can close, load and break the current under the condition of normal circuit, and can close, load and break the current under the condition of abnormal circuit within a specified time. Household circuit breaker is generally made up of contact system, arc ex...

  • 10-09 / 2018

    Common sense of electric meter box

    Electric meter box is a kind of power distribution unit that can be directly fixed on the wall or installed on the wire pole, can install any specification of electronic meter, mechanical meter, leakage protector, junction box, leakage switch DZ47 or RCL fuse and isolating switch, the knife-gate met...

  • 10-07 / 2018

    Function and requirement of Automatic Reclosing

    The Auto Reclosing Circuit Breaker is an automatic device that automatically switches the circuit breaker on demand. The operation experience of power system shows that most of the faults of overhead lines are transient, and the permanent faults are less than 10%. Therefore, after the short-circuit ...

  • 10-05 / 2018

    Routine maintenance of circuit breakers

    In order to make the circuit breaker operate more freely, we should not neglect its maintenance. If you maintain it frequently, its life will be many times longer. Why not? For its good working condition, maintenance and maintenance of China circuit Breaker need to be constantly strengthened. Then, ...

  • 09-29 / 2018

    Working process of voltage protector

    We know that overvoltage and undervoltage protection devices are an important voltage protection devices. It is often installed on the power supply entrance of distribution box. Its main function is to protect the circuit or load when the circuit is over-voltage or under-voltage. Its working princip...

  • 09-27 / 2018

    Working principle of air circuit breaker

    Air circuit breaker, also known as frame circuit breaker, is a kind of mechanical switching apparatus which can turn on, load and break the current under the condition of normal circuit, and can also turn on, load and break the current under the condition of specified abnormal circuit. Air circuit b...

  • 09-25 / 2018

    On miniature circuit breaker

    The working principle of miniature circuit breaker is arc extinguishing principle. Circuit breaker is generally composed of contact system, arc extinguishing system, operating mechanism, tripper, shell, etc. The function of miniature circuit breaker is to cut off and connect the load circuit, and cu...

  • 09-21 / 2018

    Application status of voltage protector

    At present, domestic overvoltage and undervoltage protection devices are mainly in the following forms. 1. Voltage protector for single electrical appliance. The main protectors of the tired protector are air conditioners and fridges. It can automatically protect when the voltage is too low, too hi...

  • 09-19 / 2018

    Difference between voltage protectors and leakage circuit breakers

    When you decorate your home, have you only noticed the wiring, switch, buried pipe, slotting and other processes? Have you ever noticed the distribution box? Of course, they are equipped with the equipment when you take the house, but what are the uses of these equipment? Do you need to increase or ...

  • 09-17 / 2018

    Plastic meter box used in daily life

    At present, the use of plastic meter box is actually a lot of households use this way, perhaps not often in life to pay attention to the situation, so sometimes it is still a little strange, now about the use of electric meter box is mainly combined with the actual use of two parts, respectively app...

  • 09-14 / 2018

    What is the DC circuit breaker?

    DC circuit breakers are mainly used for overload and short-circuit protection of DC electrical circuits and equipment, and also belong to the controller of DC electrical circuits. Just like the tap used in our daily life, the tap controls the flow of water, while the DC mini circuit breaker controls...

  • 09-12 / 2018

    Definition and use of air circuit breakers

    Air circuit breaker is a kind of protective device suitable for distribution network with 50/60Hz AC, rated voltage 400V, rated working current up to 1000A and below. It is used to distribute electric energy and protect line and power equipment from overload, undervoltage, short circuit, single-phas...

  • 09-10 / 2018

    What are the main measures to improve the life of contactors?

    Contactor is an important component of low-voltage electrical apparatus. Its life is one of the quality evaluation and main indexes. So it is very important to take some measures to improve its life. Reasonable matching of suction characteristics and reaction characteristics can improve the life of...

  • 09-07 / 2018

    Function and working principle of circuit breaker

    Circuit breaker is a switching device which can close, load and break the current under normal circuit conditions, and can carry and break the current under abnormal circuit conditions (including short circuit conditions) within a specified time. LV circuit breaker can be used to distribute electric...

  • 09-05 / 2018

    Common failures and troubleshooting methods of low voltage circuit breakers

    Low voltage circuit breakers, formerly known as air circuit breakers. It is mainly used in circuit overload, short circuit and under-voltage and otherr abnormal circumstances such as automatic break off the circuit, cut off the power supply. Common failures of lv circuit breaker are unable to close....

  • 09-03 / 2018

    Simple analysis of Arc Fault Circuit Interrupter (AFCI)

    It is very important to prevent electric fire which occupies the first place in fire hazard. Arc Fault Circuit Interrupter (AFCI), an arc protection switchgear, was developed to prevent electric fire. Electrical fires are mainly caused by: (1) series arc or parallel arc short circuit caused by poor...

  • 08-31 / 2018

    Basic requirements and principles of circuit breaker selection

    The main role of circuit breakers is to protect electrical appliances and isolate line load, in general, to meet the following basic requirements: 1) The selection of household circuit breaker to meet the line load characteristics. When choosing a circuit breaker, first of all, it is necessary to ...

  • 08-29 / 2018

    Summary of DC circuit breaker

    DC circuit breaker, also known as DC air switch or DC mcb, is the most common component of low-voltage circuit breaker. Mainly used for circuits of rated voltage 250V ~ 1000V, rated working current to 1 ~ 60A DC, as the DC line overload, short circuit protection and line frequent conversion. The cir...

  • 08-27 / 2018

    The composition and working principle of ac contactor

    Contactor is mainly composed of electromagnetic system, contact system and arc extinguishing device. It is a kind of low-voltage control device widely used in automatic control system and electric drive system. Household Contactor can be divided into two types: AC contactor and DC contactor. 1. AC ...

  • 08-24 / 2018

    The function of overvoltage and undervoltage protection devices

    The main function of the overvoltage and undervoltage protection devices is to break the short-circuit current. When the short-circuit fault occurs, the circuit breaker will trip the protection equipment. The function of under voltage protector is to trip when the system voltage is below the set val...

  • 08-22 / 2018

    Matters needing attention in selection of DC circuit breaker

    DC circuit breakers are personal safety precautions in low voltage electrical appliances and low voltage switchgear control equipment. The significance of indirect contact protection of dc mcb live components is to prevent the occurrence of excessive contact voltage on the housing of terminal elect...

  • 08-20 / 2018

    How to choose the circuit breaker for motor protection?

    When choosing a circuit breaker to protect the motor, we should pay attention to two characteristics of the motor. One is that it has a certain overload capacity. The other is that its starting current is usually several to ten times the rated current. Therefore, circuit breakers for motor protectio...

  • 08-17 / 2018

    The function of AC contactor

    AC contactor is used to control the circuit, mainly breaking circuit and remote control circuit. Household Contactor mainly uses auxiliary contacts to achieve control instructions and achieve the purpose of remote control circuit. The main contacts of AC contactors are usually open contacts, the mai...

  • 08-15 / 2018

    Working principle of air circuit breaker

    Air circuit breaker is also called frame circuit breaker. It can turn on, load and break the current under normal circuit conditions. It can also turn on, load a certain time and break the current under the specified abnormal circuit conditions. The operation of air circuit breaker depends on manua...

  • 08-13 / 2018

    What is the difference between C-type and D-type of miniature circuit breakers? How to choose them?

    Miniature circuit breakers used for motor startup should be type D, type C for distribution control and lighting, type D for short-circuit segment multiple larger than type C, such as rated 32A switch, D short-circuit segment capacity is about 7-10 times rated, C is about 4-7 times. Small size, eas...

  • 08-10 / 2018

    The difference of several circuit breakers in the household distribution box

    In fact, not only the home distribution box, all the single-phase circuit, there are only these kinds of switches. By the way, it is not actually called a switch, the scientific name is called "circuit breaker" or "air switch", more professional name, called "miniature circuit breaker", short for "M...

  • 08-08 / 2018

    Matters needing attention in installation and use of photovoltaic DC miniature circuit breakers

    PV DC mini circuit breaker as the use of photovoltaic distribution, the role of DC mini circuit breaker is also particularly prominent, then how can the use of DC circuit breakers in peacetime in the safe use? 1. When the circuit of DC mini circuit breaker is connected, check whether the wiring is ...

  • 08-06 / 2018

    Structural characteristics of DC mini circuit breaker

    The over current protection of the DC rectifier circuit generally considers the protection scheme of the fuse or circuit breaker on the AC side. The rated current, rated voltage and breaking capacity of the AC circuit breaker can be selected according to the rectifier circuit, load and working curre...

  • 08-04 / 2018

    How do Arc Fault Circuit Breaker detect and identify fault arcs?

    Arc Fault Circuit Breaker uses electronic technology to identify arc state, and fault arc detection is the key link of arc fault protection of Arc Fault Circuit Breaker. The study on arc and fault arc detection began in the late 1980s and early 90s in the United States. By means of light, heat, soun...

  • 08-02 / 2018

    How to choose a voltage protector?

    The use of voltage protector greatly reduces the harm caused by overvoltage or undervoltage to the circuit and power load. It is equivalent to a small intelligent switching protection device, which is mainly used in circuits with current and voltage less than 63A. It is an important protection devic...

  • 07-26 / 2018

    Future development trend of smart grid

    "Internet +" has become a hot word for the innovation and development of the traditional industry. Using Internet thinking and technology to achieve innovative development of traditional industries is also a distinctive feature of the future smart grid construction. The development model of the inte...

  • 07-23 / 2018

    Advantage introduction of frequency conversion EPS emergency power supply

    EPS emergency power supply as a backup emergency power supply, in the fire emergency use of many, with the continuous development of skills, as well as various fire emergency, industrial use, lighting and other needs are not the same, EPS emergency power supply of all kinds of equipment is also beco...

  • 07-19 / 2018

    How to install the regulator

    In the case of voltage instability, the first thing to consider is to buy a voltage stabilizer. However, when we buy a SVC Single Phase Voltage Stabilizer, how to install the voltage stabilizer is really a concern for the users, in fact that was not the case, the installation and wiring of the stabi...

  • 07-16 / 2018

    Failure analysis of high voltage vacuum circuit breaker

    High voltage vacuum circuit breaker (HV circuit breaker) is one of the key electrical appliances related to the effective control of power system. It can guarantee the normal and efficient operation of the circuit system only by maintaining its good running state. According to the key functions of t...

  • 07-12 / 2018

    Circuit breaker development integrates intelligent technology to keep up with the trend of the times

    The circuit breaker is a kind of technical equipment which can protect the power line and motor according to the current size. The development of science and technology also promotes its final fusion of intelligent technology, and the intelligent circuit breaker is also beginning to face the market ...

  • 07-09 / 2018

    Technology status of AFCI Circuit Breaker

    Technology status of AFCI Circuit Breaker AFCI Circuit Breaker uses electronic technology to identify arc state, and fault arc detection is the key link of arc fault protection. The study on arc and fault arc detection began in the late 1980s and early 90s in the United States. By means of light, he...

  • 07-05 / 2018

    New selection of circuit protection: Arc Fault Circuit Interrupter

    It is important to prevent the fire of electrical fires that are the highest in the fire hazard, and to prevent fires from becoming more "burning". The Arc Fault Detection Devices(AFCI), designed to prevent electrical fires at the beginning , was created. Electrical fires mainly originate from: (1) ...

  • 07-02 / 2018

    Research and design of arc-fault circuit interrupter (AFCI)

    It is known that traditional circuit breakers only protect the overcurrent, short circuit and leakage, and the home Arc Fault Detection Devices (AFCI) I introduced today is a new function based on the traditional circuit breaker - protecting the fault arc, to prevent the fire caused by the arc. In t...

  • 06-28 / 2018

    Overview of vacuum circuit breakers

    Vacuum Circuit Breakers are the circuit breaker that contacts and breaks contacts in vacuum. The Vacuum Circuit Breakers were first studied by Britain and the United States, and then developed to other countries such as Japan, Germany and the former Soviet Union. China began to study the theory of ...

  • 06-25 / 2018

    Analysis of common problems in vacuum circuit breakers

    In the power system, Vacuum Circuit Breakers play a very important role, so in use, it is necessary to ensure the normal operation of the vacuum circuit breaker, of course, when necessary, it is necessary to observe the condition of the vacuum circuit breaker in real time. Once the vacuum circuit br...

  • 06-19 / 2018

    How Circuit Breakers Work?

    The circuit breaker is an absolutely essential device in the modern world, and one of the most important safety mechanisms in your home. Whenever electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the problem. Without c...

  • 06-14 / 2018

    Do you know what leakage circuit breaker products we made?

    TAIXI Electric is unique in the field of R&D and production of leakage Circuit Breakers. Over the past 10 years, TAIXI Electric has used powerful research and development to create a series of products of the TAIXI Electric Leakage Circuit Breaker. TAIXI Electric Leakage Circuit Breaker Series i...

  • 06-11 / 2018

    The difference between the DC contactor and the AC contactor

    DC contactor and AC contactor are all kinds of contactors, and are one of the important components in the automatic control system. There are some differences between the DC contactor and the AC contactor. What are the specific differences? The following Xiaobian came to introduce the difference bet...

  • 06-07 / 2018

    Why should customers watch out for the fake

    Nowadays, there are many businesses in the market with the flag of the smart electric meter box, which are sold to the consumers with the imitated high energy energy meter, and the interests of the consumers are seriously damaged. Even some businesses have colluded with some power companies, and the...

  • 06-04 / 2018

    What protection functions does soft starter have?

    What protection functions does soft starter have? (1) Overload protection function: the soft starter introduces the current control loop, so it can track and detect the change of the motor current at any time. By increasing the overload current setting and the inverse time control mode, overload pr...

  • 05-31 / 2018

    The difference between air switch and leakage switch

    Generally, it is better to install the air switch at the end of the electric meter, because the distance of the line is far away. If the failure rate of the leakage protection switch is increased relatively, it may be caused by the wire. The leakage switch is better before the use of the equipment. ...

  • 05-29 / 2018

    How to correctly choose the leakage circuit breaker with proper operating current?

    If you want to choose a suitable Leakage Circuit Breaker can be understood from two aspects. It can help everyone. Let's take a look at it together with Xiaobian. First, choose according to the purpose of use and where the electrical equipment is located 1. Protection against direct contact with ...

  • 05-28 / 2018

    What are the installation environment and system planning of EPS emergency power supply?

    EPS emergency power supply is a centralized emergency power supply, and the EPS emergency power supply is usually installed in the distribution room of the building, so it can not only effectively centrally manage the equipment, but also can not easily be affected by the fire in the case of fire. ...

  • 05-26 / 2018

    Why is the automatic reclosing circuit breaker so popular?

    As a necessary accessory for terminal distribution, the circuit breaker products can protect the control and protection of the power system to the load system. Through the detection of line overload, short circuit, leakage and other fault conditions to make a corresponding tripping action to protect...

  • 05-24 / 2018

    The important role of the electric meter box in the present life

    With the popularization of audio-visual equipment now, electricity is used in many places, so the application scope of the electric meter box has been further improved. At present, we all know that the place and scope of electricity use is not only confined to family life, but also more involved in ...

  • 05-23 / 2018

    Are you still looking for a leakage circuit breaker or a miniature circuit breaker? look here!

    The rated leakage current refers to the value of leakage current that is required to ensure that the leakage circuit breaker must operate under the conditions specified by the manufacturer. Leakage circuit breaker rated leakage current is mainly 5,10,20,30,50,75,100,300 mAh, etc. Earth Leakage Circu...

  • 05-22 / 2018

    How to correctly select the leakage circuit breaker with suitable operating current?

    If you want to choose a suitable Earth Leakage Circuit Breaker ELCB can be understood from two aspects. It can help everyone. Let's take a look at it together with Xiaobian. First, choose according to the purpose of use and where the electrical equipment is located 1. Protection against direct ...

  • 05-21 / 2018

    Installation principle and precautions of DC circuit breaker

    Principles and points for attention of type and installation of DC Circuit Breaker: 1. the type of DC mini circuit breaker should be installed horizontally or vertically. The special type of DC circuit breaker should be carried out according to the requirement of product description. 2. The type ...

  • 05-17 / 2018

    The effect of the stabilizer

    With the rapid development of society, the use of electrical equipment is increasing day by day. However, the aging and development lag of power transmission and distribution facilities, as well as the poor design and insufficient power supply cause the low end user voltage, while the line head user...

  • 05-14 / 2018

    Main wiring method of motor soft starter

    1. Online type: All the Soft Starter Controllers have motor overload protection. When the soft starter runs online, the soft starter controller can overload the motor and do not install the thermal overload relay. Because the current harmonic current after the SCR is very large, the electronic ther...

  • 05-08 / 2018

    Breaker classification and characteristics

    Circuit breaker can be divided into: 3.1 Classification by type of use: A or B (see 4.4). 3.2 According to breaking media points, for example: - air separation; - Breaking of the vacuum; — Gas separation. 3.3 According to the design type, for example: — open type; - Plastic shell type." 3.4 Accordin...

  • 05-10 / 2018

    Application of motor soft starter in drainage system

    Power electronics, micro processing technology and modern control theory are used to design and produce new starting equipment with international advanced level. This product can effectively limit the starting current of AC asynchronous motor when starting. It can be widely used in fans, pumps, tran...

  • 05-07 / 2018

    About the definition of GB/T 14048.2

    For most of the definitions of this standard, see Chapter 2 of GB/T 14048.1--2000 and GB/T 2900.18. For the purposes of this standard, the following additional definitions should be used: 2.15.2 Service short-circuit breaking capacity The service short-circuit breaking capacity shall be in accordanc...

  • 05-05 / 2018

    What are the basic requirements of the GB 14048.2 whitch is same as the IEC60947.2

    1 basic requirements This standard is equivalent to the use of the International Electrotechnical Commission IEC60947-2:1995 "Low-voltage switchgear and control equipment - Part 2: Low-voltage circuit breakers." GB/T 14048.1-2000 (Low-voltage switchgear and control equipment General Provisions) prov...

  • 05-03 / 2018

    Circuit breakers develop and integrate intelligent technology to keep up with the trend of the times

    The circuit breaker is a kind of technical equipment which can protect the power line and motor according to the current. The development of science and technology also promotes its final fusion of intelligent technology, and the intelligent circuit breaker is also beginning to face the market devel...

  • 05-03 / 2018

    What is the IEC standard and how is it formulated?

    1) IEC (International Electrotechnical Commission) is an international standards organization composed of national electrotechnical committees. The purpose of the IEC is to promote the international cooperation involved in standards related to electrical and electronic technology, including China ex...

  • 04-23 / 2018

    What are the features of the dual power automatic transfer switch?

    1. Dual power automatic transfer switch can realize reliable switching between two power sources. Dual power transfer switch is made up of one or more switching switches and other necessary electrical appliances, used to detect power and circuit, and to convert one or more load circuits from one pow...

  • 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...

  • 03-26 / 2018

    AC contactor function

    Din Rail Mounted Contactor function: the main work of the AC contactor (cj19 magnetic 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 t...

  • 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 ...

  • 03-19 / 2018

    Differences between voltage protection and leakage protection and their respective sites

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

  • 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 electrical ac contactor manu...

  • 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...

  • 03-06 / 2018

    Safety regulations of circuit breakers

    In summer, miniaturecircuit breakers are particularly important, so how to use the miniaturecircuit breakers 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 breakers are well connect...

  • 04-20 / 2018

    What are the characteristics of Taixi Electric Phase Loss Protection Switch?

    All of Taixi Electric submersible pump protection electric motor circuit breaker use some traditional analog electronic protectors. However, such a protector has different power protection devices in the process of renewing the settings. Similarly, it is also a kind of power supply system. , And oth...

  • 04-16 / 2018

    Introduction of the principle and function of ACB

    Principle of ACB Air Circuit Breaker There are 3 ways of tripping: thermal, electromagnetic and compound tripping. When the line has general overload, the overload current can not cause the action of the electromagnetic tripping device, but it can make the heat element produce certain heat, promot...

  • 04-19 / 2018

    The difference between the leakage switch and the air switch

    1. Air switch also becomes Air Circuit Breaker. The principle of air switch is to take the air as an insulating medium, connect the current in the circuit, make the element produce heat, cause the inner double metal plate to bend upward after the heat, push, make the lock button open and cut off the...