motive motor Germany motive model motive price

motive motors are a type of motor that changes the speed by altering the number of magnetic pole pairs, voltage, current, frequency, and other parameters to achieve higher performance. Due to their excellent performance, variable-speed motors are widely used in industrial sectors such as steel, power plants, cables, chemicals, petroleum, cement, textiles, printing and dyeing, papermaking, and machinery for stepless speed control of loads with constant torque or decreasing torque. They are particularly suitable for driving pumps and fans with significant flow variations, achieving good energy-saving results.

motive motor classification

A single-layer winding is a winding where only one effective side of a coil is placed in each stator slot, so the total number of coils is only half the total number of slots in the motor. The advantages of single-layer windings are fewer coils, simpler craftsmanship, no inter-layer insulation leading to higher slot utilization, and no phase-to-phase breakdown faults due to the single-layer structure. The disadvantages are that the electromagnetic waveform generated by the winding is not ideal, resulting in higher iron losses and noise, and slightly poorer starting performance. Therefore, single-layer windings are generally only used in small-capacity asynchronous motors. Single-layer windings can be divided into chain windings, cross-chain windings, concentric windings, and cross-concentric windings based on the shape of the coils and the arrangement of the end connections. Chain windings consist of single-layer coil elements with the same shape and width, named because the ends of the coils resemble linked chains. For single-layer chain windings, it is important to note that the coil pitch must be an odd number; otherwise, the winding cannot be arranged. Cross-chain windings are used when the number of slots per pole per phase 9 is an odd number greater than 2, making chain windings impossible to arrange. In this case, cross windings with single and double coils are adopted. In concentric windings, all coils within the same pole-phase group surround the same center. When the number of slots per pole per phase Q is an even number greater than 2, concentric windings can be used. The advantages of single-layer concentric and cross-concentric windings are simpler winding and embedding processes, while the disadvantage is that the long coil ends consume excessive wire. Apart from occasional use in small-capacity 2-pole and 4-pole motors, this winding form is rarely used today.

motive motor maintenance

Motor maintenance: 1 Before use, confirm whether the exterior of the low-speed motor is damaged and whether there is any oil leakage. 2 Please first confirm whether the purchased low-speed motor specifications match the design. 3 If using accessories such as sprockets, pulleys, or couplings, install them in accordance with relevant standards. 4 Lubricating grease has already been filled in the low-speed motor housing; no lubricant replacement is required for 16000 hours. 5 During operation of the low-speed motor drive, ensure that the current does not exceed the rated current value indicated on the motor nameplate. 6 Pay attention to ambient temperature, humidity, acidity/alkalinity (pH), and other conditions. 7 The operating environment is -5℃ to 40℃, humidity below 85%, and indoor altitude below 1000 meters. 8 Incorrect installation, maintenance, or operation may cause serious damage to the low-speed motor. 9 When performing maintenance or disassembly, strictly confirm that the external power supply to the motor is completely disconnected. 10 Safety protection devices must be properly installed to ensure absolute operational safety. 11 The motor must be grounded; please refer to relevant electrical distribution regulations. 12 Confirm that the motor is correctly installed before starting the low-speed motor. 13 If the low-speed motor is used with a variable frequency drive (VFD) for low-speed transmission, an independent auxiliary cooling fan must be added. 14 After power-off, single-phase low-speed motors retain some residual charge in their capacitors; discharge first or ground the terminals. 15 For vertical motor installation, specify this in advance when ordering or contact our company.

motive motor installation

Before motor installation, measure the insulation resistance between the stator winding and the housing, and between the main and auxiliary windings. The resistance at room temperature should not be lower than 10MΩ; otherwise, the winding should be dried, for example, using a bulb heating method. The shaft extension diameter is machined to standard tolerance dimensions at the factory, so users must select pulleys or other matching parts with inner diameters conforming to national standards. During installation, push in by hand or gently tap the shaft extension platform; do not strike heavily with a hammer, as this may shatter the centrifugal switch, preventing motor startup, damaging bearings, and increasing operating noise. Before installing the motor onto the matching machinery, carefully check the motor base for cracks or issues affecting mechanical strength. If any problems are found, installation and use are prohibited. The motor must be installed on a flat plate with fixing holes and secured with bolts matching the base holes. To ensure safety, connect the grounding wire to the motor's grounding screw and ensure reliable grounding before operation. The grounding wire should be copper with a cross-sectional area of no less than 1m㎡. Use a time relay to replace the centrifugal switch. The centrifugal switch used in single-phase asynchronous motors is a mechanical switch. When the motor speed reaches more than 70% of the rated speed, the contacts open to disconnect the auxiliary winding (starting winding) or the starting capacitor. If the centrifugal switch is damaged or if low rural voltage frequently burns out the starting capacitor, a delay relay (220V type) can be used instead. Connect the two wires from the internal centrifugal switch together, and insert the normally closed contacts of the delay relay in series externally (to enhance contact durability, parallel multiple contact groups or add an intermediate relay). The power supply for the time relay coil can be connected in parallel with the main winding, with the action time adjusted to 2~6s. Practical experience shows this method works well, avoiding starting capacitor burnout even under low rural voltage, resulting in high user satisfaction.

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