Commissioning of:

1. Electrical installation and equipment up to and over 1000V

• resistance of protecive earthing systems
• insulation resistance
• resistance of lightning protective earthing systems
• power frequency withstand tests
• transition resistanece in contact systems

2. Electrical installation and the equipment next to 1000 V

• Ipmedance of phase-protective conductor circuit
• Earth leakage circuit breakers

3. Safety equipment: isolate bars (manipulation, measuring, for portable grounding); isolated clamps; voltage detectors; current clamps; protective gloves, protective boots and galoshes; dielectric carpets and paths.

• electrical insulation strenght by increased AC test voltage

4.Cable power lines up to 20 kV

• insulation resistance
• electrical insulation strenght by increased AC test voltage

5. Capacitor installation up to and over 1000V

• current value and uniformity of the load of the invidual phases
• no housing connectionabsence of body compound

6. Transformers up to and including 400kv

• insulation Resistance
• power frequency withstand tests
• active winding resistance
• transformer oil – breakdown voltage
• transformer ratio
• polarity check

7. Relay protection devices, electrical automation, telemechanics and secondary circuits

• check of relay protection settings (direct or alternative(start up and return) current, direct or alternative(start up and return) voltage, time delay, impedance(start up and return))
• functional test (correct, incorrect act or functioning fail of the device)

8. Electric motors for direct and alternative current

• insulation resistance
• HV withstand tests
• active winding resistance (stators and rotors)
• power and idle losses
  

9. Power measurement transformers up to 400kV

• Capacitance and dissipation factor (tgδ)

• COMPLETE LIST COULD BE FOUND HERE