The Importance of Preventive Electrical Maintenance
According to International Electrotechnical Commission statistics, 30% of industrial facility fires are caused by electrical faults that could be prevented with a regular maintenance program.
Required Periodic Tests
Insulation Resistance Test
Performed using a Megohmmeter with a test voltage of 1000V DC:
- New cables: ≥ 1000 MΩ
- Used cables: ≥ 100 MΩ (acceptable)
- Less than 10 MΩ: Requires immediate inspection
Periodic Maintenance Schedule
| Period | Procedure | Standard |
|---|---|---|
| Monthly | Visual inspection of panels + temperature check | IEC 60364-6 |
| Every 3 months | Tighten electrical connections + panel cleaning | IEC 60364-5 |
| Annually | Insulation test + grounding test + RCD test | IEC 62446 |
| Every 3 years | Comprehensive electrical audit by certified third party | IEC 60364-6 |
