Fire prevention measures for using DC motors.
Due to the frequent use of DC motors in industrial production, it is necessary to carry out moisture-proof, anti-corrosion, dustproof, and explosion-proof treatments. In addition, fire prevention measures also need to be taken. Let's take a look together.
1. No debris should be piled up around the machinery. To avoid causing a fire, an appropriate distance should be maintained between the DC motor and its starting device and combustible materials.
2. After maintenance and power outage for more than 7 days, the insulation resistance of the motor should be measured before starting to ensure that it is qualified, in order to prevent the motor from being burned out due to phase to phase short circuit or ground breakdown caused by insulation moisture after formal operation.
3. When starting, the prescribed number of starts and start intervals should be strictly followed, and frequent starts should be avoided as much as possible to prevent the accumulation of overheating and fire in the stator winding.
4. During operation, the current and voltage must not exceed the allowable range, and the temperature, sound, vibration, and shaft movement of the DC motor should be normal and free of burnt odor.
5. When a DC motor experiences phase loss operation, the power supply should be immediately cut off to prevent the motor from overheating and catching fire due to overload caused by phase loss operation.
6. Once the motor catches fire, the power should be immediately cut off and a dedicated fire extinguisher should be used to extinguish the fire.
Editor's reminder: After a DC motor catches fire, if using a dry powder fire extinguisher to extinguish the fire, be careful not to let dust fall into the bearing. If necessary, fire water can be sprayed into a mist to extinguish the fire. Do not inject large streams of water into the equipment.
