The VTU is a single-phase grounded voltage transformer (the VTU-SF version is equipped with a fuse device).
The transformer is designed for transmitting measurement signals to metering instruments, protection and control devices, and for isolating secondary circuits from high voltage in indoor AC switchgear operating at 50 Hz.
The technical specifications comply with the requirements of DSTU EN 61869-3:2017.
The transformer is manufactured in placement category C1 according to DSTU EN 60654-1:2022 and is intended for operation under the following conditions:
- – altitude above sea level – not more than 1000 m
- – relative humidity – up to 98% at 30 °C
- – upper operating ambient temperature – +50 °C
- – lower operating ambient temperature – −45 °C
- – ambient environment – non-explosive, free of dust, chemically active gases or vapors in concentrations that may damage metal coatings or insulation
- – installation position – any
Insulation thermal class – B.
Type Examination Certificate (Module B) No. UA.TR.001 34-25 Rev.0, reference number 29/3/B/12/044-25.