(1) the correct way to choose the motor
The mechanical characteristics, starting, braking, speed regulation and other control performance of the motor should meet the requirements of the mechanical characteristics and the consumption process. The influence of the motor on the power supply quality (such as voltage wavering, Xie wave interference, etc.) should be within the permissible range; According to the predetermined working system, cooling method Kyiv in the condition of the motor power, the temperature rise of the motor should be within the limited range; According to the environmental conditions, operating conditions, device mode, transmission mode, select the motor structure, device, protection mode, ensure the motor reliable work; Comprehensive consideration of a few investment operating costs, the whole drive system is economic, energy saving, reasonable, reliable and safe.
(2) the cause of motor load is too large
Asynchronous motor over load causes are roughly divided into the following conditions. Formed by the mechanical equipment dragged. Such as drainage and irrigation machinery waterways blocked, machine shaft different center, the formation of motor load is too large, and even blocked rotation. Due to the inferior working conditions of the motor itself. Such as poor ventilation, ambient temperature is too high, motor machinery local problems and other reasons caused by motor overheating, insulation degree is reduced. Even short circuit. Due to the poor quality of the power supply grid, such as low voltage, three-phase imbalance and other reasons to form the motor current increase.
(3) Measures for routine maintenance of the motor
The daily maintenance of the motor is very important to reduce and prevent the motor from breaking out in operation, and the most important link is the tour inspection and timely cleaning up the source of any abnormal phenomenon. Seriously stop accident analysis after presenting an accident and take countermeasures are essential technical work to reduce the number of accidents and improve motor running efficiency when repairing the stop station. Motor repair is of great importance to its normal operation, but the motor in operation often encounters many emergencies, such as short circuit, overload, and breakage. In order to keep the motor from being damaged under these conditions, some operation and maintenance measures must be taken to keep the motor clean. No water, oil, dust, etc. are allowed inside the motor, and dust inside and outside the motor should be cleaned regularly.
Pay attention to the load current not * rated value.
Pay attention to check bearing heating, oil leakage and other conditions, especially according to the rules of refueling.
The temperature rise of the motor cannot be rated.
(4) the fundamental technical requirements of the motor
The basic technical requirements of the motor include: rating; Working system and quota; Operating conditions; Insulation grade and temperature rise; Dielectric properties; Shell protection class; Cooling method; Structure and device mode; Line end mark and rotation direction; Shape and device dimensions and tolerances; Noise and vibration limits; Electrical performance; Duration or reliability of work; Apparent mass; Safe performance of motor.
Jiangsu Meiao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.
Contact: Ms chen
Phone: +86-18852658865
E-mail: clp@meaopower.com
Add: HaiLing Industrial Park.Taizhou.China