Requirements of explosion-proof sliding vane pump unit for motor
Low-voltage motors shall be high-efficiency energy-saving motors, and their efficiency shall not be lower than the level 2 energy efficiency limit specified in Energy Efficiency Limit Values and Energy Efficiency Grades of Small and Medium-sized Three-phase Asynchronous Motors (GB1861E012), and "china energy label" shall be affixed to the motors.
The protection level of junction box becomes IP55. A rain cover should be added to the motor roof installed vertically. The entrance of the main junction box of the motor adopts the direct cable entry mode, and the joint meets the explosion-proof requirements. The motor manufacturer provides the cable explosion-proof sealed clamping joint (bell mouth entry)
The motor shell shall be formed at one time with horizontal and vertical parallel cooling ribs or radiation cooling ribs to ensure good heat dissipation of the motor
According to the box should have grounding bolt, and should be near the grounding bolt with clear permanent grounding sign.
The nameplate shall be a stainless steel nameplate fixed on the stationary parts of the engine base, with standard fonts and clear marks, and shall be stamped by matte stamping process. , the installation place should be conspicuous and easy to watch
The nameplate shall indicate GB 755；; IEC 60034-1。
The motor starts directly at full voltage. When the terminal voltage of the motor is not lower than 80% of the rated voltage, the motor can drive the unit to start.
The motor starts directly at full pressure, and normal starting allows cold state twice and hot state once.
When the deviation between the power supply voltage and the rated voltage does not exceed 5%, the output power of the motor should be kept at the rated value, and the insulation level is F 。