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    1
    Voltage Protection Device | VPD
    How to classify self-repair over-voltage protection?
    QUESTION:How to classify self-repair over-voltage protection?
    ANSWER:The range of self-repairing over-voltage and under-voltage protectors used in the electrical industry is still very wide. It can effectively avoid abnormal voltage on the line and damage the electrical equipment, providing an effective guarantee for safe production. And compared with the traditional circuit protector, its biggest advantage is that it can automatically cut off and restore the circuit under unattended operation, reducing the probability of accidents to a great extent. So, if you want to classify the self-repair over-voltage protection, which aspects can be classified?
    The first is the classification of the control circuit. Like all electrical devices, self-resetting overvoltage and undervoltage protectors can be categorized by way of control circuits because there are two types of circuits that are commonly exposed today: one is single-phase power, and the other is three-phase four-wire circuit. . So since the type of circuit used is different, there are some differences in the self-resetting over-voltage protection. The self-reset over/under voltage protector used in a single-phase circuit is called a single-phase self-resetting over/under voltage protector; and the self-reset over/under voltage protector used in a three-phase four-wire circuit is Called three-phase four-wire self-repair over-voltage protection.
    The second is the insertion method classification
    The insertion method can be divided into multiple types according to actual circuit requirements, and its upper and lower ends can be inserted. However, as long as one end is input, the other end must be an output. From this point, it can be divided into two types: one is to output the lower end from the upper end, and the other is to output the upper end from the lower end.
    The third is the width to classify
    The width can be divided into multiple types. The width of the self-repair over/under voltage protector used in the single-phase line is mainly 36mm and 45mm, while the method used in the three-phase circuit adopts the preferred 135mm, 108mm and 90mm.
    The following specific to everyone to talk about, self-repair over-voltage protection product classification:
    2
    Distribution Cabinet&Box
    What are the differences between EPS fire emergency power supply and UPS power supply?
    QUESTION:What are the differences between EPS fire emergency power supply and UPS power supply?
    ANSWER:

    EPS power supply is an abbreviation for emergency power supply. It is usually used in emergency and accident lighting.

    UPS power supply is the abbreviation of uninterruptible power supply. Its main function is to provide a stable and uninterrupted power supply for computers or some electronic devices through the way that the batteries are connected to the host. However, many people are apt to confuse the UPS power supply and the EPS fire emergency power supply; but in fact, there is a certain difference between the two power supplies. The following Taixi Electric will analyze it from three aspects.
    1. The difference in the output
    The power supply object of the UPS is the computer and the network equipment, and the nature of the load is not much different. Therefore, the national standard specifies that the UPS output power factor is 0.8. The EPS is mainly used as a power emergency protection, and the load is inductive, capacitive, and rectifying loads. Some of the loads were put into operation after the mains power failure. Therefore, EPS is required to provide a large inrush current. Generally, it is required that normal operation of 10 in or more can still be performed under a rated load of 120%. Therefore, the EPS needs to have better output dynamic characteristics and is more resistant to overload. The UPS rated capacity is based on the apparent power kv·A, and the EPS rated capacity is expressed in terms of active power kW. The online UPS selects inverter priority to ensure uninterrupted output power supply and high quality power supply. The EPS fire emergency power supply to ensure emergency use, is the choice of municipal power priority.
    2. Functional differences
    Both have a mains bypass and an inverter circuit, but the EPS only has a continuous power supply function. Generally speaking, the inverter does not require high switching time and can have multiple outputs. The Taixi Electric EPS also configures battery cell monitoring functions. The EPS is powered by the bypass when the mains supply is normal. When the utility power is interrupted, it turns to inverter power supply, and the power utilization rate is high. UPS generally emphasizes its three major functions: constant voltage stabilization, uninterrupted power supply with high switching time requirements, and purification of utility power in daily routines. Rectification; Inverting double conversion circuit power supply, when the inverter is faulty or overloaded, it is switched to bypass power supply, and the power utilization rate is not high. UPS does not play a role only when the utility power is interrupted. When the utility power supply is under voltage, is too high, and the line experiences surges and other abnormal conditions, the UPS can output high-quality power to ensure normal operation of the power equipment.
    3. Differences in application areas
    In China, EPS is mainly used for the load of fire protection and some of the requirements for power supply quality are not too high, but it is necessary to ensure the continuous supply of electricity equipment. Only emphasize the function of continuous power supply. When EPS is used for firefighting load, its product technology is certified by the Ministry of Public Security. UPS is generally used in computers and digital information systems. It requires a load with a higher power supply quality, and mainly emphasizes the inverter switching time, output voltage, frequency stability, pureness of the output waveform, and no interference.
    Daily maintenance of EPS fire emergency power supply

    First, place the maintenance of the Taixi Electric EPS fire emergency power supply site

    1. Inspect the room for ventilation and room temperature.
    2. The environment temperature of the battery equipped with the EPS is not higher than 30°C. The temperature has a great influence on the service life of the battery. The service life of the battery is increased by 10°C above 25°C and the service life of the battery is halved. Conditional units should be equipped with air conditioning.
    3. EPS must be kept away from sources of ignition and flammable and explosive materials. General ordinary debris should not be stored in the room where the EPS is placed. It is not conducive to fire safety but also can lead to rodent trapping and the occurrence of bite-inducing cable accidents.
    4. Wet air in the spring and summer seasons easily causes condensation on the EPS internal control circuit board, which causes the EPS to have a control failure. Therefore, the indoor and outdoor areas should be protected from moisture in spring and summer.
    5. The indoor dust can not be too dirty, the dust generally has a positive charge. If there is too much backlog on the EPS emergency power control board, it may cause the control board to malfunction.
    6. The placement of EPS can not be too close to the window to waterproof, rain, and sun.

    Second, the mains input maintenance
    1. Regularly check if the mains voltage is normal and whether the zero or fire wire is misaligned, especially if the front end of the EPS is a dual-channel mains or a grid with a standby generator, check the main power of the first and the second standby power frequently. Whether the zero or fire wire of the power supply is the same or not must be corrected immediately if it is found to be misaligned, otherwise EPS failure may occur.
    1. Users with surge protectors on the front end of the EPS should regularly check whether the surge protector and the grounding cable are normal. Lots of rodents should generally be equipped with protective sleeves on the input and output cables.

    Third, the EPS output circuit line maintenance
    Determine whether the output circuit is short-circuited according to the status of EPS output circuit breakers. Use the clamp flow meter to check whether each circuit is overloaded. Use the cable to touch the cable to sense whether the temperature of the cable is abnormal and determine whether the wire diameter is appropriate or too small.

    3
    Circuit Breaker,Molded Case Circuit Breaker | MCCB
    There are several models and specifications of your molded case circuit breaker
    QUESTION:There are several models and specifications of your molded case circuit breaker
    ANSWER:

    Taixi Electric Molded Case Circuit Breaker is a modular assembly of high-insulation, high-protection, high-hardness plastic housing. The internal circuit boards, coils, and mechanical action mechanisms are all modularly installed. The product has strong anti-surge capability, high breaking capacity, and can adapt to various harsh or high load electrical environments.
    Taixi electrical plastic shell circuit breakers include: TXCM1, TXCM1Z (DC), DZ20, DZ20Y, DZ20LE (leakage), DZ10, DZ15, DZ15LE (leakage), DZ15LD (motor), DZ108 (small A number 0.1 ~ 63A), TXGV2 (motor), DZL18 (old) and other products have a very wide coverage, can be used for 0.1 ~ 1250A ultra-high range of rated current applications, can be used for single-phase, three-phase distribution sites.
    TXCM1 series: It can adapt to the 63~1250A over-range distribution environment, the product rated breaking capacity can reach 12.5~50KA or more, in addition to overload protection (basic function) short circuit protection (basic function), over-voltage (auxiliary contact), Up to ten electrical protection mechanisms such as leakage (leakage) are optional. It is an ideal high protection circuit breaker product.
    DZ20 series: It can adapt to the distribution environment of 16A ~ 630A, including DZ20Y-general breaking capacity, DZ20J-higher breaking capacity, and is also one of the most conventional molded case circuit breaker products. The price is also more suitable for conventional power distribution. .
    DZ10, DZ15 series: conventional plastic case, similar to DZ20.
    DZ15LE, DZ20LE series: with leakage protection type MCCB.

    DZ15LD, TXGV2 series: Both circuit breakers are products specifically for motor protection. DZ15LD products have a phase loss,
    Overcurrent and fault detection functions, the product is equipped with indicators on the front, can directly feedback to the user point of failure, Taixi electrical engineers professional debugging, indicating that the instantaneous time is ns level. TXGV2 is a conventional overload protection type MCCB dedicated to the motor, which can make the most timely response to the over-load operation status of the motor.

    DZ108 series: With electromagnetic tripping mechanism, the tripping is more rapid and timely. It can protect ns-level overload for special requirements occasions such as experimental equipment with a small number of A.

    DZL18 series: It is one of the earliest batch of molded case circuit breakers of Taixi Electric. Its product structure is simple, its breaking capacity is higher than that of conventional miniature circuit breakers, and its insulation level is higher. The price is the lowest among molded case circuit breakers.

    Taixi Electric provides one to two years warranty service for each product. Protecting the basic rights of consumers and winning customer trust is one of the most basic concepts of Taixi Electric.

    4
    Distribution Box
    What is the role of eps, and how to switch power?
    QUESTION:What is the role of eps, and how to switch power?
    ANSWER:When the system mains power is lost, enable the battery or standby generator to make emergency power supply. General industry for the most important system backup power, and fire escape lighting instructions for electricity.
    5
    Other Products
    There are several specifications for the number tube?
    QUESTION:There are several specifications for the number tube?
    ANSWER:The number tube have 4 pecifications.
    6
    Contactor
    What is the role of AC contactor?
    QUESTION:What is the role of AC contactor?
    ANSWER:AC contactor main long-distance connection and breaking circuit for the control of AC motor qigong, stop and reverse.