Three-phase off-load tap changer FII-03

for oil-filled transformersindustrial17-positions

Off load tap changer FII for oil immersed Transformers Bridge 5 positions Flag type fixed contacts Max 400 A 20 kV Setting 2.5% per position Control device with aluminium wheel Control device on the side wall of the transformer Available variants : - Voltage classes : 20 kV / 30 kV / 60 kV - 90 kV on special request - Current : Up to 400A - Fixed contacts tubular, flag type, threaded… - Removable - 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 9 positions - Above 9 positions on special request - Custom length of the shafts - Control device with handle - Aluminium protective cover on the handle, on request - 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 or 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 • driving shaft boss to be welded on tank or cover of Transformer, or 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 : all ratings up to 400 A, with removable contacts (tubular, flat or flags)