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Principle and usage of motor shaft current measuring instrument
The principle of the motor shaft current meter is to use the Hall effect to detect the current of the motor shaft. The Hall effect is an electrical effect based on a magnetic field. It can convert the change of the magnetic field into a voltage signal to achieve the measurement of the current. The mRead more -
Manufacturing and working principle of fan motor rotor
1. Manufacturing of fan motor rotorsThe manufacturing of fan motor rotors requires multiple steps, including design, casting, machining and assembly.1. DesignFirst, design is required to determine the size, material, shape and other parameters of the rotor. The design must take into account the useRead more -
How to eliminate the grounding fault of the motor winding
To eliminate the grounding fault of the motor windingFirst, observe the damage of the winding. Except for the insulation that has aged and become brittle, it can be repaired locally.If the grounding point is at the outlet of the notch or the bottom of the slot coil, and only one wire is damaged, theRead more -
Common causes of abnormal noise in motor bearings
Common causes of abnormal noise in bearings:1. Impurities such as sand or carbon particles are mixed into the bearing, acting as abrasives;2. Impurities such as water, acids or paint are mixed into the bearing, acting as corrosives;3. The clearance of the bearing is too small (improper matching);4.Read more -
Motor Vibration Test Methods
1. Causes of motor vibrationBefore understanding how to measure motor vibration, you first need to understand the causes of motor vibration. Motor vibration is usually caused by the following reasons:1. The internal structure of the motor is loose or severely worn2. The motor bearing is worn or damaRead more -
What is the difference between a synchronous motor and an asynchronous motor?
The main differences between synchronous motors and asynchronous motors include starting mode, working principle, speed control, power factor, overload characteristics, application range, structural complexity and other aspectsLet's explain the differences in each aspect one by one:Starting modeRead more -
The difference between the star connection and the triangle connection of the motor
In triangle connection: each winding of the three-phase motor bears the line voltage (380V),In star connection: each phase voltage of the motor bears (220V).When the motor power is the same, the winding current of the triangle motor is less than the winding current of the star connection motor.WhenRead more -
How to replace the motor carbon brush
1. Steps to replace motor carbon brushes1. Prepare toolsReplacing motor carbon brushes requires some basic tools, such as wrenches, screwdrivers, pliers, brushes, etc. Before starting the replacement, make sure you have these tools ready.2. Disassemble the motorFirst, you need to disassemble the motRead more