Project status: Research & Development
Frequency response measurement system for certification of instrument voltage transformers MarsTest-VT-PQ
Sphere of application
MarsTest-VT-PQ is a system that automates frequency response certification tests of instrument voltage transformers rated from 6 kV to 200 kV. The tests imply that voltage harmonics of order from 0.3 to 50 (15 Hz to 2.5 kHz) are applied to the transformers. The amplitude and phase angle (within 0 to 10°) measurements comply with IEC/TR 61869-103.
The system covers the needs of VT manufactures, certification labs, power distribution companies etc.
Purpose of the tests
To make a conclusion on the suitability of voltage transformers under test for power quality measurements
Components of the system
1. Specially designed high-voltage source and reference voltage transformer
2. Low-voltage measurement set including:
- waveform generator
- voltage amplifier
- reference instrument (comparator)
- software MarsTest-VT-PQ