These voltage transformers are used in the following applications:

  • in IT grids without neutral conductor
  • in applications in which the grid voltage is too high for the measuring inputs

The voltage transformer consists of a three phase input and three phase output with additional neutral.
Using these transformers, even the measurement devices of the series UMG 96… can be used in IT grids. Furthermore, it can be used for all metering instruments, when the grid voltage ist too high for the measuring inputs.

Abb.: Spannungswandler geschlossen mit offenen Anschlussklemmen

Dimensional drawing

Diag.: Voltage transformer without cover with fuses




3-phase voltage transformer
Protection classIP20
Accuracy class1
Core diameterM65/27,8
StandardsEN 61558 + EN60044-2
Rated voltagesee below (0,028A)
Output voltage400V AC, 0,013A
FusePrimary M 0,032A 5x3mm
Rated power5 VA
Connection typeDzn0
Weight3,30 kg


DescriptionTypeVoltage primaryVoltage secondaryFuse primaryRated powerItem number
Voltage transformerBV525V AC400 V AC0,032A5VA15.04.035
Voltage transformerBV705V AC400 V AC0,032A5VA15.04.036