Mars-Energo calibrated new digital combined transformers

In June 2020 Mars-Energo metrology lab conducted successful calibration of new digital combined instrument transformers.

Pic. 1.
For the first time our High-voltage mobile test lab HVM DSS was used for testing of digital current and voltage transformers with IEC 61850 digital outputs.

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
time server
PC with Energomonitor-61850EXT software.
Pic. 2.
Test set for digital current transformer calibration
Pic. 3.
Test set for digital voltage transformer calibration
Pic. 4.
Energomonitor-61850EXT software and the generation of the calibration report