Services
Testing & diagnostics of Transformers
- Winding resistance ;
- Insulation resistance ;
- Dissipation factor / Power factor in range of 15 Hz – 400 Hz ;
- Capacitance ;
- No Load loss and no load current ;
- Short circuit impedance and load loss ;
- Transformer turn ratio ;
- Phase displacement ;
- Short circuit impedance in range of 15 Hz – 400 Hz ;
- Hotspot magnetic core measurement ;
- AC withstand voltage tests AV ;
- Induced voltage test IVPD ;
- Lightning impulse test – full wave and chopping wave 1800 kV ;
- Switching impulse test 950 kV ;
- Recovery voltage measurement – RVM ;
- FDS-PDC dielectric response analyzer – Frequency Domain Spectroscopy (FDS) and an advanced version of Polarization Depolarization Current (PDC+) measurement ;
- Sweep frequency response analysis – SFRA.
Testing & diagnostics of Rotating electric machines
- Winding resistance ;
- Insultation resistance ;
- Dissipation factor / Power factor and Capacitance in range of 15Hz – 400Hz ;
- No Load loss and no load current ;
- Thermovision inspection ;
- Stator magnetic test – ring flux test ;
- EL CID Test ;
- AC withstand voltage test ;
- DC withstand voltage tests with leakage current ;
- Partial discharge ;
- FDS-PDC dielectric response analyzer – Frequency Domain Spectroscopy (FDS) and and advanced version of Polarisation Depolarisation Current (PDC+) measurement.
- Insulation resistance
- Capacitance & dissipation factor
- Moisture determination
- Partial discharge measurement & analysis
- High-Voltage tests
- Winding resistance
- Transformer turns ratio and vector group
- Exciting current
- Temperature rise test
- Short circuit impedance / leakage reactance Uc
- Electromagnetic core test
- Sweep frequency response analysis SFRA
- Power Transformers ;
- Rotating electrical machines ;
- Bushings ;
- Breakers ;
- Others.
- Power Transformers ;
- Rotating electrical machines ;
- Bushings ;
- Breakers ;
- Others.
Frequency Domain Spectroscopy (FDS) & Polarisation Depolarisation Current (PDC+)
- Power Transformers ;
- Rotating electrical machines ;
- Bushings ;
- Breakers ;
- Others.
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Издържимо импулсно и комутационно напрежение ;
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Приложно напрежение 60 s – Резонансна система до 300 kV 3,3 A от 15 до 300 Hz ;
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Индуцирано напрежение 100 Hz.
Ring lux Test B = 1 Т
EL CID Test 4 %
