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What should be paid attention to in daily inspection and maintenance of the motor control system?
The control system of the motor is composed of switches, fuses, main and auxiliary contactors, relays, temperature, induction devices, etc., which is relatively complex. There are many kinds of faults, and it is often necessary to analyze and troubleshoot with the help of control schematic diagra...Read More -
Quality failure case analysis: Shaft current is the hacker of the motor bearing system
Shaft current is a major quality killer of variable frequency motors, large motors, high voltage motors and generators, and it is extremely harmful to the motor bearing system. There are many cases of bearing system failures due to inadequate shaft current prevention measures. The characteristics...Read More -
Four performance orientation contradictions faced during motor rotor slot selection!
The shape and size of the rotor slots have a direct impact on the rotor resistance and leakage flux, which in turn will affect the motor’s efficiency, power factor, maximum torque, starting torque and other performance indicators. The performance that is affected is of great importance to m...Read More -
Analysis of common problems in motor rolling bearing systems
Bearing failure is a relatively concentrated type of motor failure, which has a great relationship with the selection, installation and later use and maintenance of bearings. Ms. combined some actual analysis cases and data accumulation to simply classify the failures and causes of rolling bearin...Read More -
Causes of vibration during operation of explosion-proof motors and solutions for motor vibration
Explosion-proof motors are a type of motor that can be used in flammable and explosive plants. They isolate or do not generate sparks during operation. They are mainly used in coal mines, oil and gas, petrochemicals and chemical industries. In addition, they are also widely used in textile, metal...Read More -
Introduction to Motor Efficiency
How to improve motor efficiency? This efficiency of the motor is affected by a small amount of losses, including resistance losses, mechanical losses caused by friction, losses caused by the dissipation of magnetic energy in the core, and different losses depending on the type of material used. ...Read More -
Main explosion-proof ways and methods for mining explosion-proof electrical equipment
1. Install protective casing The underground environment of coal mines is complex. Not only are various production materials piled up, but there may also be gas. If arcs and sparks are generated during the operation of electrical equipment for various reasons, fires and explosions may occur. A p...Read More -
Precautions for the use of electrical equipment in coal mines
1. Products related to safe production used in coal mines must obtain the safety mark for coal mine products. Products that have not obtained the safety mark for coal mine products shall not be used. 2. Ordinary portable electrical measuring instruments must be used in places where the gas concen...Read More -
Why is the vibration sensor so important to the motor? What is its principle?
The vibration sensor is one of the key components in the testing technology. It has the advantages of low cost, high sensitivity, stable and reliable operation, and a large adjustable range of vibration detection. It is widely used in many fields such as energy, chemical industry, medicine, autom...Read More -
Why is differential protection used on large high-voltage motors?
Compared with small and medium-sized motors, high-voltage motors are expensive, and their application scenarios are critical and special. Whether it is the disposal of the motor body after a fault or other problems derived from the fault, it may be much more serious than we can imagine. For this...Read More -
The adverse effects of shaft current on motor performance
For electric motor products, bearing system problems are always a hot topic. More often, especially for motor manufacturers, bearing system failures are simply attributed to bearing quality problems. Some motors have their bearings replaced frequently, but the problem is never solved because the...Read More -
Why high-voltage motors generally use a three-bearing structure
Bearing system is an important part of the motor, is a key component of the mechanical properties of the motor embodied in the key components, to rationally configure the motor bearing system, first of all should understand the following issues. 1、Front bearing and rear bearing of the mo...Read More