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The Y2 series tefc induction motor is an updated product of the Y series motor and is a general-purpose fully enclosed self-fan-cooled squirrel-cage three-phase asynchronous motor. It is the latest product in my country in the 1990s, and its overall level has reached the level of similar foreign products in the early 1990s. The product is used in various fields of the national economy, such as machine tools, water pumps, fans, compressors, and can also be used in transportation, mixing, printing, agricultural machinery, food and other occasions that do not contain flammable, explosive or corrosive gases.
Product Detail
Motor Type: tefc squirrel cage induction motor
Output Power: 0.18 kW - 315 kW
Frame Size: IEC 63 - 355
Number of Poles: 2, 4, 6, 8
Rated Voltage: 380V (can be adjusted according to customers)
Frequency: 50 or 60 Hz
Protection Level: IP54 or IP55
Energy Efficiency Index: IE1 / IE2 / IE3
Insulation Class: B or F
Cooling Method: ICO141
Wiring Connection: Y connection below 3kW, △ connection above 4kW
Working Mode: Continuous (S1)
Product Parameter (specification)
960 rpm induction motor
Production Features
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Motor knowledge
How does Liyuan Motor control the temperature rise of YE2 motor?
The temperature rise of the YE2 motor stator winding is positively correlated with the current. When the current increases, the temperature rise will naturally increase, and the increase range will be greater. In addition to the influence of current, temperature rise is also related to other related factors, such as process fluctuations, quality control, etc. In order to avoid nonconformities caused by process fluctuations and other factors, a certain margin should be reserved in product design.
The rated voltage and frequency range of YE2 motor will be specified in the technical conditions of YE2 motor. If it exceeds the range, the YE2 motor will not work normally. Therefore, it is necessary to ensure that the grid parameters corresponding to the YE2 motor meet the normal operating conditions of the motor. The direct effect of voltage on YE2 motor windings is the effect of voltage, especially for temporary lines installed outdoors. For reasons such as cost and material safety, more temporary lines choose aluminum core wire, which will cause serious insufficient voltage applied to the YE2 motor. At this time, the YE2 motor current is particularly large, and the result will cause the YE2 motor to seriously heat up and burn out due to overheating in a short time.
When the temperature rise of the finished YE2 motor is unqualified, there are not many remedial measures. We can control and correct the temperature rise by increasing the number of dipping, increasing the width and outer diameter of the fan, and increasing the air gap by rotating the diameter of the small rotor. For a 2-pole YE2 motor, increasing the air gap may be effective because the stray loss will be reduced, and the heat radiation from the rotor to the stator will be weakened; but for a multi-pole YE2 motor, the gain may not be worth the loss because the excitation current will be greatly reduced. increase.
For motors with a low winding slot-to-full ratio, increasing the number of dippings or using vacuum pressure dipping can improve the heat conduction in the winding slots and between the frame and the iron core, but the paint layer will accumulate at the end of the winding and is not conducive to heat dissipation. In addition, in the subsequent dipping process, the coating on the outside of the winding cannot enter the inside of the winding, which has little effect on improving the temperature rise.
