DUSTERLOH motor Germany DUSTERLOH model DUSTERLOH price

DUSTERLOH motors are a new generation of gear reduction motors, featuring compact size, low noise, maintenance-free operation, and an attractive appearance. The speed ranges from 0.83r/min to 300r/min. This series of low-speed motors is a new high-tech product that integrates electromagnetic drive and reduction mechanism within the motor housing. The low speed and high torque directly meet customer requirements without the need for additional reduction devices. The motor uses Class B and Class F insulation, with protection ratings of IP44 and IP55, and voltages of 220V and 380V.

DUSTERLOH motor principle

When symmetrical voltage is applied to the motor stator winding, a rotating air-gap magnetic field is generated. The rotor winding conductors cut this magnetic field, inducing an electromotive force (EMF). Since the rotor winding is in a short-circuit state, a rotor current is produced. The interaction between the rotor current and the air-gap magnetic field generates electromagnetic torque, driving the rotor to rotate. The motor speed must be lower than the synchronous speed of the magnetic field; only in this way can the rotor conductors induce EMF, thereby generating rotor current and electromagnetic torque. Therefore, this motor is called an asynchronous motor, also known as an induction motor. The motor speed (rotor speed) is less than the speed of the rotating magnetic field, hence the name asynchronous motor. It is basically the same as an induction motor. s = (ns-n) / n, where s is the slip rate, ns is the magnetic field speed, and n is the rotor speed. There are many types of asynchronous motors, including explosion-proof three-phase asynchronous motors, ys series three-phase asynchronous motors, y, y2 series three-phase asynchronous motors, and YVP series variable frequency speed-regulating motors.

DUSTERLOH motor fault analysis

Motor injector faults generally manifest as: injector nozzles blocked by gummy substances, carbon buildup, or poor sealing causing dripping, leading to mixture concentrations that are too lean or too rich. The detection method is as follows: First, start the engine and use a stethoscope to check the operating sound at each injector. If no sound is heard, check the wiring connectors, the injector, or the injection signal from the ECU. Then, use a multimeter to measure the resistance between the injector terminals. If the resistance value does not match the specified value, replace the injector. Finally, check the injector fuel volume; the value should be within the normal range, and the difference in fuel volume between cylinders should be less than 5cm3. The water temperature sensor is used to detect the coolant temperature and convert it into a voltage signal related to the temperature, which is input to the ECU as the basis for the ECU to correct the fuel injection volume. If the water temperature sensor fails, or if there is an open circuit, short circuit, or severe scale buildup on the surface of the wiring between the sensor and the ECU, it will cause significant deviations in the output signal. This ultimately prevents the injector from increasing or decreasing the fuel injection volume in a timely manner, leading to starting difficulties. Most electronic fuel injection engines use stepper motor-type idle speed control valves. The ECU adjusts the energization sequence of the stepper motor's electromagnetic coils based on engine operating conditions, causing the cone valve body on the stepper motor shaft to screw in or out. This adjusts the opening of the bypass air passage, achieving regulation of the bypass intake air volume. If the engine is difficult to start but starts with a slight press of the accelerator pedal, it indicates a fault in the idle speed control valve. Disassembling the ISC valve will reveal significant carbon buildup, gummy deposits, and oil accumulation on the valve body cone surface. This reduces the adjustable range of the cone valve, resulting in reduced intake air volume and an overly rich mixture during cold starts, causing starting difficulties.

DUSTERLOH motor protection

Motor differential protection includes differential instantaneous trip protection and composite ratio differential protection with or without second harmonic braking. It is suitable for applications with three-side differential current input (three-winding transformers). It features complete and powerful acquisition functions for primary equipment voltage and current analog quantities and switch quantities. It is equipped with standard RS485 and industrial CAN communication ports. Through reasonable configuration, it realizes protection and measurement/control functions such as three-winding main transformer differential protection, two-winding main transformer differential protection, two-winding distribution transformer differential protection, generator differential protection, motor differential protection, and non-electrical quantity protection.

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