Abb endows with wide range of voltage transformer and the eovt or the electro-optic voltage transducer uses light to accurately measure voltage on high voltage power lines. Eovt uses light to accurately measure voltage on high voltage power lines. This measurement meets the accuracy requirements of class 0.2 for metering as defined in iec and is used as an input to electronic metering and / or relaying systems. Key features are as follows:
1 no capacitive dividers are used and full line to ground voltage is applied across the eovt sensor.
2 this design permits true voltage measurement to be performed for the highest possible accuracy and stability.
3 it is lighter and smaller than conventional oil-filled voltage transformers.
4 the elimination of oil/paper insulation provides enhanced safety and reduced maintenance costs.
