Three-phase off-load tap changer HT-01

for oil-filled transformersindustrial13-position

Off load tap changer HT for oil immersed Transformers Bridge 5 positions High Voltage Class 250 kV Up to BIL 1250 kV Flag type fixed contacts Max 800 A Control device with aluminium Wheel Available variants : - High Voltage Class 250 kV Up to BIL 1250 kV - Current : Max 800 A - Fixed contacts : Tubular or Flag type - 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… - Custom length of the shafts - 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 or active part of Transformer • by bolting of additional support (metallic or insulating bracket) on tank 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) Current ratings : • 400 A with tubular or flag contacts (for selected types) • 800 A with flag contacts