Three-phase off-load tap changer HI-01

for oil-filled transformersindustrial13-position

Off load tap changer HI for oil immersed Transformers Bridge 5 positions Flag type fixed contacts Max 1250 A 20 kV Setting 2.5% per position Control device with aluminium Wheel Available variants : - Voltage classes : 20 kV / 30 kV / 45 kV / 60 kV - Current : Max 1250 A per stage - 3750 A with multi stages - Flag type fixed contacts - Silverplating on fixed / moving / common contacts, on request - Diagrams available : Bridge, Series-Parallel, Star-Delta, Common output per phase, star with neutral output, multiple stages… - Number of positions : 2 to 7 positions - Above 7 positions on special request - Custom length of the shaft - Control device on the cover or on the wall of the Transformer - Wheel at human height - Mechanical lock with micro-switch NO/NC - Position signalling micro-switches Direct drive through coupling operation, from side wall of tank, or cover of Transformer Remote controls at man’s height are available, for shaft crossing on top or bottom of tank, or on cover of Transformer Fixing on tank, or cover, or active part of Transformer : • by bolting of main bracket on tank, cover or active part of Transformer • control device flange to be bolted on tank or cover of Transformer Length of shaft to be required when ordering (designs may vary depending on required distances) Twinned units on several stages (identical or different) are available Current ratings : • 1000 A with flag contacts • 1250 A with flag contacts • possible to twin identical boards in parallel for higher currents