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The Y2 series asynchronous 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: asynchronous 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)
Asynchronous induction motor
Production Features
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Motor knowledge
Three-phase unbalance phenomenon and root cause analysis of Y2 series three-phase asynchronous motors.
Y series three-phase asynchronous motors sometimes have quality problems, such as: B. The three-phase resistance is unbalanced and the three-phase current unbalance exceeds the standard during the factory inspection. Liyuan Motor Service Center analyzes this phenomenon and its reasons as follows:
The national standard for Y series three-phase resistance imbalance is less than or equal to 2% for Y wiring, Δ wiring is less than or equal to 1.5%, and the national standard for three-phase current imbalance is less than or equal to 10%. Three-phase resistance and three-phase current imbalance exceeding the standard can be roughly divided into the following three categories.
The unbalance of the three-phase resistance exceeds the standard, but the three-phase current is basically balanced. The reason is that:
1. In a phase with a large resistance value, the welding quality of some connectors is not good, especially when multiple strands are wound coils, individual strands cannot be connected (also called virtual welding).
2. The winding material is uneven or the wire diameter is smaller than the standard value.
