Explosion-Proof Motor Is a Kind of Motor That Can Be Used in Flammable and Explosive Places and Does Not Produce Electrical Sparks During Operation. Explosion-Proof Motor Is Mainly Used in Coal Mine, Oil and Gas, Petrochemical, Chemical and Other Industries. In Addition, It Is Also Widely Used in Textile, Metallurgy, Urban Gas, Transportation, Grain and Oil Processing, Paper Making, Medicine and Other Departments. As the Main Power Equipment, Explosion-Proof Motor Is Usually Used to Drive Pump, Fan, Compressor and Other Transmission Machinery.
Explosion-Proof Motor Wiring Method
The Connection of the Explosion-Proof Motor Should Be in the Special Junction Box, And the Junction Box Must Also Be Equipped with Rubber Sealing Ring, Jbq Motor Lead Wire and Other Special Accessories for the Explosion-Proof Motor.
Precautions for Explosion-Proof Motor Wiring:
1. Check the Electrical Gap and Creepage Distance After Installation of the Junction Box: The Smaller Electrical Gap of 380/660v Is 10mm, And the Smaller Creepage Distance Is 18mm. The Smaller Electrical Gap of 1140v Is 18mm and the Smaller Creepage Distance Is 30mm.
2. The Entrance of the Junction Box Is Sealed by a Rubber Ring. The Weakness of This Structure Is the Aging and Elastic Failure of the Rubber Ring, Which Makes the Cable and the Rubber Ring Inconsistent.
3. For the Junction Box with Double Outlet Wires, The Unused Outlet Wires Should Be Blocked by Metal Seals with a Thickness of Not Less Than 2mm. The Outer Diameter of the Metal Seal Should Be Similar to the Inner Diameter of the Water Outlet Hole of the Water Inlet and Outlet Device to Ensure the Pressure Plate or Pressure. Tighten the Nut to Compress the Seal Ring Evenly to Achieve a Reliable Seal.
One of the Main Reasons for Various Failures of Explosion-Proof Motors Is the Damp Insulation. For Example, In the Lviv-Volensk Coal Mine, The Motor Used for the Scraper Conveyor Belt with a Daily Output of More Than 1000 Tons, Due to Water and Water Droplets in the Motor Cavity, The Insulation Resistance of the Stator Winding Dropped, And the Fault Accounted for the Fault. It Accounts for 45.7% of the Total.
Therefore, In Many Cases, The Closed Structure of Electrical Equipment Is Not Enough to Protect It from Adverse Weather Factors. Therefore, There Should Be Some Special Devices in the Housing of Electrical Equipment to Ensure the Improvement of Weather Conditions. Air Humidity Control Must Be Included. The Device Is Used to Reduce the Relative Humidity and Humidity of the Air in the Chassis. Occasional Drops of Moisture Are Removed from the Housing and Prevent Moisture from Being Inhaled Through the Bearings and Seals.
Post time: Aug-16-2023
