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High and low voltage of three-phase asynchronous motor

High and low voltage of three-phase asynchronous motor

Three phase asynchronous motors have high requirements for the stability of power supply voltage. High or low voltage can have a significant impact on the operation of the motor, manifested as follows: difficulty in starting, risk of overheating and damage, frequent voltage fluctuations may cause motor vibration, increased noise, and even damage to bearings and seals, overheating and insulation damage, mechanical damage, high voltage may cause arc discharge, damage to the motor casing or surrounding equipment

29

2025

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04

National standard for insulation resistance testing

National standard for insulation resistance testing

The insulation resistance testing requirements for different equipment and materials ensure the safety and reliability of electrical equipment. In practical operation, appropriate standards should be selected for testing based on the specific equipment type and purpose.

25

2025

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04

Temperature of 7 insulation levels for motors

Temperature of 7 insulation levels for motors

The motor has 7 insulation levels: Y-level maximum allowable temperature: 90 ℃, A-level maximum allowable temperature: 105 ℃, E-level maximum allowable temperature: 120 ℃, B-level maximum allowable temperature: 130 ℃, F-level maximum allowable temperature: 155 ℃, H-level maximum allowable temperature: 180 ℃, C-level maximum allowable temperature: above 200 ℃.

20

2025

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04

Classification of motor insulation levels

Classification of motor insulation levels

The insulation level of the motor is a key indicator to ensure the safe operation of the equipment, and the appropriate level should be selected according to the actual working conditions. High temperature environments can accelerate insulation aging. It is recommended to regularly test insulation performance to avoid faults caused by overheating.

16

2025

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04

Difference between explosion-proof motor and ordinary motor

Difference between explosion-proof motor and ordinary motor

Differences between explosion-proof motors and ordinary motors: explosion-proof performance, protection level, enclosure and sealing, cooling system, insulation and temperature control, operational safety, maintenance and certification, price difference

14

2025

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04

The function of an electric motor

The function of an electric motor

An electric motor is a device that converts electrical energy into mechanical energy and is widely used in various mechanical equipment. Its functions are mainly reflected in the following aspects:Drive mechanical motion、energy conversion、control system、electric power generation、Household Electric Appliances、National Defense and National Economy。

08

2025

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04

Motor maintenance skills

Motor maintenance skills

The motor maintenance skills include the following aspects:Visual inspection method、Dismantling inspection、Winding maintenance、Bearing maintenance、Fault diagnosis and handling

07

2025

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04

The main function of the motor

The main function of the motor

The main function of a motor is to generate driving torque and serve as a power source for various machinery and electrical appliances. It converts electrical energy into mechanical energy to provide the necessary power and motion for various devices. Electric motors are widely used in modern society, involving fields such as industry, agriculture, transportation, and national defense.

02

2025

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04

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