The models of explosion-proof motors currently include YBK3 explosion-proof motor, YB3 explosion-proof motor, and YBK3 explosion-proof motor. Among them, the shell of YBK3 explosion-proof motor used in coal mines is made of steel and applied to underground (underground mining face) operations, while the other two are made of cast iron shell and applied to underground (above mining face) operations. The working conditions in underground operations are complex, the environment is harsh, the load changes with geological conditions, the operating range is limited, and there are risks such as collisions.
The explosion-proof performance of YBK3 series motors meets the requirements of GB3836.1-2000 "Electrical Equipment for Explosive Gas Environments Part 1: General Requirements" and GB3836.2-2000 "Electrical Equipment for Explosive Gas Environments Part 2: Explosion proof Type" d "standards, and is made into explosion-proof type Exd I. It is suitable for underground mining faces in coal mines.
Introduction to YBK3 Explosion proof Motors for Coal Mines
YBK3 series three-phase asynchronous motor model meaning
For example: YBK3-132 S2-2
Y represents asynchronous motor;
B represents explosion-proof type;
K represents underground coal mines;
3 represents the third design;
132 represents the center height of the machine base;
S2 represents the length code of the machine base;
2 represents the number of poles.
YBK3 series three-phase asynchronous motor usage conditions
The ambient air temperature varies with the season, but does not exceed 35 ℃, with a minimum ambient air temperature of -15 ℃.
2. The altitude shall not exceed 1000m.
The maximum relative humidity of the ambient air shall not exceed 95% (when the temperature is 25 ℃) (underground coal mines) or the average maximum relative humidity of the wettest month shall be 90%, and the average minimum humidity of the month shall not exceed 25 ℃.
The rated voltages are 380V, 660V, 1140V, 380/660V, 660V/1140V.
The rated power is 50Hz.
The rating of the 6-motor is based on the continuous working system (S1) and allows for full voltage starting.
The motor adopts F-class insulation, and the temperature rise of the stator winding is assessed at 80K.
Parameters of YBK3 series three-phase asynchronous motor
1. Rated voltage: 380V, 660V, 380/660V, 660/1140V
2. Rated frequency: 50Hz
3. Protection level: IP55
4. Cooling method: IC411
5. Work schedule: S1
6. Insulation level: F
7. Installation forms: IMB3, IMB5, IMB35, etc.