Why Megger Testing is Done?
The quality of the insulation decreases with time and environment condition such as temperature, humidity, moisture and dust particles. It also gets affected negatively by the electrical and mechanical stress, that’s why it’s necessary to check the IR value of an equipment on a fixed regular interval to avoid any electrical shock.
IR test does not cause any damage to the insulation, making it a good option to check for any problems or issues. The range of the testing device is between 500 and 1,000 volts, which is relatively low. Because of the low voltage, some punctures in insulation becomes undetected. It gives a general information about the leakage current, and if the insulation areas have excessive dirt, moisture, deterioration or winding faults.
Benefits of Megger Testing
- Proactive instrumentationCondition Analysis
- Reduced Risk of Emergency installationFailure
- Insured convenience
- Prognosticative Repairs
- Quality Management
- Prognosticative instrumentation lifespan