A、 Preventive test scope of construction distribution box: power transformer, high voltage switch cabinet, alternator, DC motor, high voltage circuit breaker, transformer, high voltage power cable, lightning arrester, grounding grid device, etc.

B、 Construction distribution box equipment maintenance, maintenance service scope:

1. Annual / quarterly / monthly operation, emergency repair, inspection, maintenance and repair of electrical equipment in high and low voltage distribution rooms of factories, industrial areas, science and technology parks, buildings and large power enterprises;

2. Troubleshooting of power equipment: oil leakage treatment of transformer, abnormal operation of transformer, abnormal mechanism of switch cabinet, abnormal reactive power compensation of capacitor, manufacturing of intermediate / terminal head of cable, etc.

3. High voltage test of high and low voltage electrical equipment: insulation characteristic test, DC resistance / loop resistance measurement, volt ampere characteristic test, specific polarity test, grounding resistance test, arrester test, AC / DC withstand voltage test, etc.

4. Relay protection debugging: setting value setting test and simulated fault protection action debugging.