Three-phase off-load tap changer HM-02

for oil-filled transformersindustrial9-position

Off load tap changer HM for oil immersed Transformers Common output per phase 5 positions 30 A Fixed and common contacts with internal diameter Ø3.1 30 kV Setting 2.5% per position Control device with aluminium knob Available variants : - Voltage classes : 20 kV / 30 kV - Current : 30 A / 63 A / 150 A 30 A / 63 A : Fixed contacts tubular, with internal diameter Ø3.1 / Ø5.1 150 A : Fixed contacts Tubular or Threaded - Removable - Silverplating on fixed / moving / common contacts, on request - Diagrams available : Bridge, Common output per phase, Series-Parallel, Star-Delta, multiple stages… - Number of positions : 2 to 7 positions - Above 7 positions on special request - 2 heights of bracket available : 91 and 131 mm - Control device with aluminium knob or handle - Aluminium protective cover on the knob or the handle, 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 27 mm on tank or cover of Transformer) • by bolting of additional support (metallic bracket or insulating hook) on tank, or cover of Transformer 3 available heights for the main bracket (L=91, L=131, L=186) 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 • 150 A with removable tubular contacts