In June 2020 Mars-Energo metrology lab conducted successful calibration of new digital combined instrument transformers.
These types of transformers are manufactured with the state of the art technologies and are used in substations maintained by PJSC ROSSETI. For calibration services Mars-Energo metrology lab used the following components of HVM DSS:
|reference instrument of new generation Energomonitor-61850 (accuracy class 0.02)
|reference instrument current transformer TTIP (accuracy class 0.05)
|reference instrument voltage transformer EPRO (accuracy class 0.01)
|sources of voltage and current
|PC with Energomonitor-61850EXT software.