Three-phase off-load tap changer HR-01

for oil-filled transformersindustrial7-position

Off load tap changer HR for oil immersed Transformers Bridge 3 positions Tubular fixed contacts 30 A Fixed contacts with internal diameter Ø5.1 20 kV Setting 2.5% per position Control device with polyamid knob Available variants : - Voltage classes : 20 kV and 30 kV - Current : 30 A / 63 A Fixed contacts with internal diameter Ø3.1 / Ø5.1 - Diagrams available : Bridge, Common output per phase, Series-Parallel, Star-Delta, multiple stages… - Number of positions : 2 to 7 positions - 6 heights of bracket available : 70, 100, 130, 150, 170 and 200 mm - Control device with polyamid or aluminium knob - Aluminium protective cover on request Direct drive operation, from side wall of tank, or cover of Transformer. Fixing on tank, or cover of Transformer by bolting of the main bracket (hole dia 20 mm on tank or cover of Transformer) 6 available heights for the main bracket (L=70, L=100, L=130, L=150, L=170, L=200) Twinned units on several stages (identical or different) are available. Current ratings : • 30 A with tubular stationary contacts dia 3.1 x 5.0 mm • 63 A with tubular stationary contacts dia 5.1 x 7.0 mm