High Voltage Laboratory operates within KONČAR – Electrical Engineering Institute as an integral part of the Laboratory center.
The main activities of the Laboratory are developmental, research, and commercial tests of electro-energy equipment. In addition to the standard defined test methods, the Laboratory applies its methods developed through experience.
Technical capabilities
- Impulse voltages up to 2400 kV
- Front-chopped linearly rising impulse voltage
- AC voltage up to 1000 kV
- Tests with AC voltage consisting of fundamental voltage and harmonic voltages with amplitudes in the range 5-15 %
- DC voltage up to 300 kV
- Wet tests
- Measurement of radio interference voltage
- Measurement of partial discharges
- Accuracy class measurement of instrument transformers
- Temperature rise tests
- Thermal stability
- Capacitance and dielectric losses measurement
- Calibration of electrical field strength meters
- Calibration of high voltage measurement systems
- Calibration of PD calibrators
- Acoustic emission testing of power transformers on site
Equipment tested
- High voltage measuring systems and test equipment
- Instrument transformers
- Power transformers
- BushingsDisconnectors
- Circuit breakers
- High-voltage switchgear and controlgear
- Power cables
- Fittings for overhead lines
- Busbars
- Rotating electrical machines winding bars and coils
- All types of insulators
- Capacitors
- Partial discharge calibrators
- Electric field strength meters
- Tools and equipment for live working
BROCHURE: High Voltage Laboratory BROCHURE: Calibration of HV measuring systems and PD calibrators