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Bulletproof Motor is an electric motor manufacturer and electric motor supplier. We supply single phase induction motor, three phase induction motor, squirrel cage induction motor, slip ring induction motor, wound rotor induction motor, explosion proof motor, ac motor, dc motor, variable speed electric motor, asynchronous motor, synchronous motor, high power motors (up to 10000 kW), high voltage motors (up to 13.8 kV), customized motors, gearbox, gear motor, speed reducers for decades in China. Thanks to the competitiveness both in quality, service and price, Bulletproof Motor's products are distributed to most of the countries and regions around the world, such as Bulgaria, Croatia, Romania, Slovenia, Turkey, Azerbaijan, Ukraine, Kazakhstan, Uzbekistan, Russia, Iran, Dubai, Yemen, Saudi Arabia, Egypt, Nigeria, South Africa, Sri Lanka, Chile, Peru, Bolivia, Argentina, Australia, Singapore, Malaysia, Vietnam, Thailand, Indonesia, Philippines and etc.

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  • Application Of Variable Frequency Motor In Water Pump And Fan Load

    In the load of water pump and fan, the power output of the motor can be controlled by adjusting the frequency, so as to realize the energy saving of the system. The working point of the pump is the intersection of the lift curve of the pump and the resistance characteristic curve of the pipeline. …

  • The Reason For The Excessive Load Of The Special Motor For The Fan

    The fan is usually composed of three parts: the hood, the motor and the fan blade. The motor is an outer rotor structure. Compared with the inner rotor motor, the outer rotor motor has the advantages of stable structure, good protection, low vibration, low noise and reliable operation. However, due to the long-term high-power and …

  • Explosion-proof Motor Troubleshooting

    Explosion-proof motor is a special motor equipment with great danger. Once the explosion-proof surface has rust and rust spots, the contact surface is not in good contact, and harmful media will take the opportunity to enter, corroding the parts and winding insulation in the machine, and once the explosion-proof motor loses explosion-proof performance, the consequences …

  • Several Common Three-phase Asynchronous Motors

    Common three-phase motors mainly include: Y series, Y2 series, YE2 series, YEJ series, YX3 series and other three-phase asynchronous motors. The base models mainly include: There are mainly B3, B5, B35, B14 bases, which are the common installation methods of ordinary three-phase asynchronous motors, but what does the horizontal type B3 vertical B5 installation of …

  • The Reason For The High Noise Of The Three-phase Asynchronous Motor

    When using the frequency converter to drive the three-phase asynchronous motor to run, we often encounter the situation that the three-phase asynchronous motor is noisy. There are only two reasons for motor noise: mechanical and electrical. 1. Mechanical aspects Such as scratching the motor casing, the motor or the cooling fan is damaged, and the …

  • How To Improve The Insulation Quality Of Explosion-proof Motors

    Measures to improve the insulation quality of explosion-proof motors include the following aspects 1. Improve the quality of the iron core: At present, the insulation specifications of the explosion-proof motor industry are basically unified. The selection of materials and the design of the insulating structure are not very different from one manufacturer to another. But …

  • Test Method For Motor Heating Up

    Micromotor heating test method and matters needing attention 1. Environmental conditions of micro-motors 1. The measurement of the temperature rise of the micro DC motor should be carried out in a room that is not affected by the external temperature. The indoor ambient temperature should be in the range of 5~40 °C. Should the indoor …

  • How To Prevent Shaft Breakage Of Three-phase Asynchronous Motor

    1. Material and selected material characteristics The motor shaft and shaft extension key are usually 45 steel, and the allowable stress under normal temperature, static load and general working conditions is 186MPa. The rotor and stator of Haocheng Motor’s wound three-phase asynchronous motor are also equipped with three-phase windings and are connected to external varistors …

  • Features Of Y Series Three-phase Asynchronous Motor

    Y series is a fully enclosed self-fan cooling cage type three-phase asynchronous motor for general use. The three-phase asynchronous motor stator three-phase winding is the circuit part of the asynchronous motor, which plays a very important role in the operation of the asynchronous motor and is the key component for converting electrical energy into mechanical …

  • Y Series Three-Phase Asynchronous Motor Operation Method

    Y series three-phase asynchronous motors should be properly grounded. There is a grounding screw in the bottom right of the junction box. If necessary, the foot of the motor or the flange fixing bolts can be used for grounding. The three-phase asynchronous motor consists of two basic parts: a fixed stator and a rotating rotor. …

  • Maintenance Of Explosion-proof Motors

    Explosion-proof motor maintenance work is indispensable when operating with supporting equipment, so what key points should be paid attention to when overhauling explosion-proof motors? 1. Before testing, the parts of the explosion-proof motor should be connected and some installation symbols should be made (the three-phase cables and outgoing wires are marked with yellow, green, and …

  • The Composition And Meaning Of The Motor Model

    It is composed of four subsections, including motor type code, motor characteristic code, design serial number and excitation mode code. 1. The type code is the Chinese pinyin letters used to represent various types of motors. For example: asynchronous motor Y; synchronous motor T; synchronous generator TF; DC motor Z; DC generator ZF 2. The …

  • Causes Of High Motor Current

    Several situations of motor current being too high When the motor current is high, it is often manifested in the serious heating of the motor. The following basically summarizes the reason why the motor current is too high. 1. The power supply voltage is too high When the power supply voltage is too high, the …

  • Features Of Large And Medium-Sized Motor

    (1) Large and medium-sized motors need to be customized Different from the standardized design and production process of micro-motors, low-power motors and small-sized motors, large and medium-sized motors need to meet customer requirements for rated power, speed, voltage, bearing form, cooling method, protection level, torque characteristics, overload capacity, Dozens of parameters such as load characteristics, …

  • Common Faults Of High-Voltage Explosion-Proof Motors

    The faults of high-voltage explosion-proof motors can be divided into electrical faults and machine faults. The important faults in the machine are vibration, bearing overheating, rotor sweeping, abnormal running sound, etc.; in the electrical field, if the motor winding is grounded, short-circuited, open circuit, bad contact, squirrel cage broken and other faults. The insulation failure …

  • Explosion-proof Motor Selection

    The selection of explosion-proof motors must follow the following principles. 1. Explosion-proof motor selection principle The choice of explosion-proof motors must be compatible with the hazard of the explosive mixture. The so-called dangerous degree of explosive mixture refers to the group of explosion level and ignition temperature of explosive mixture. The selected explosion-proof electrical equipment …

  • The Difference Between Explosion-Proof Motor And Ordinary Motor

    What is the difference between explosion-proof motors and ordinary motors? 1. Explosion-proof motors are generally used in flammable and explosive situations 2. The sealing of explosion-proof motor junction box is better than that of ordinary motors 3. The low protection level of explosion-proof motors is IP55, while ordinary motors have IP23, IP44, IP54, IP55, and …

  • Maintenance Of Explosion-proof Motors

    Explosion-proof motors are widely used in flammable and explosive dangerous places, including explosive gas environment, combustible dust environment and fire hazard environment, etc., mainly used in coal mines, oil and gas, petrochemical and chemical industries. In addition, it is also widely used in textile, metallurgy, urban gas, transportation, grain and oil processing, papermaking, medicine and …

  • Matching Selection Of Inverter And Motor

    According to the load characteristics of the drive equipment, it is divided into three types: constant power load, constant torque load and fan pump load. Different load types have different requirements on the inverter. Constant power load The torque required by the spindle of the machine tool and the coiler and uncoiler in the rolling …

  • The Difference Between Ordinary Motor And Variable Frequency Motor

    1. Ordinary asynchronous motors are designed according to constant frequency and constant voltage, and it is impossible to fully meet the requirements of variable frequency speed regulation. The following is the influence of the inverter on the motor (1) The efficiency and temperature rise of the motor Regardless of the type of frequency converter, different …

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