How to Prevent an Electrical Machine During its Inactivity
Q. How to prevent an electrical machine during its inactivity?
If the machine remains un-operated and kept idle for a long time it will not work properly and even may fail to operate. The reasons being :
- Moisture, din, dust from the surroundings is absorbed and deposited on the insulation of the parts of machines.
- Thus di-electric strength of insulation reduces.
Following care should be taken.
- Use space heaters, or electric lamps near, around the machine so that temperature higher than ambient is obtained and the insulation will not absorb moisture.
- Raise the brushes from commutator.
- Cover the machine and keep it away from ground on the safe area.
- Disconnect if from supply.