Power & Distribution Transformers

Power & Distribution Transformers

Applications

• Magnetic circuit - Lamination CRGO M3 to M5, MOH and ZDKH type
• Electric circuit - Electrolytic grade 99.9% pure copper
• Dielectric circuits - Electric grade press paper, boards and mineral oil
• Thermal circuit - ONAN through natural convection for effective cooling through axial and radial ducts

Specific Features

• Designed for trouble-free performance
• Design conforms to IS 2026, BS171, IEC76 and other relevant standards
• Low power loss and low noise
• Designed to withstand electrical impulses and thermal and dynamic stresses
• Optimum utilization of active materials for compactness
• Modern manufacturing techniques ensure cost effectiveness, reliability and a long trouble-free performance

Specifications

• 3 phase, 50 Hz in voltages of 11kv, 22kv, and 33kv
• Off-circuit tap changer to provide +5% to -10% taps in steps of 2.5%
• Class A insulated
• Vector group Dyn 11
• Continuous duty
• Copper wound as per relevant standards
• Paintings as per IS-5 specification
• Both HV & LV side cable boxes

Standard Fittings

• Rating & Diagram plate
• Earthing terminals
• Lifting lugs
• Thermometer pocket
• Off-circuit tap switch
• Air release hole with plug
• Oil conservation with drain plug
• Pressure relief valve
• Jacking lugs
• Inspection cover
• Oil level indicator
• Drain-cum-bottom-filter valve
• Top-filter valve with plug
• Uni-directional rollers
• Silica gel breather
• Cooling radiators

Optional Accessories on request

• Bucholtz relay with alarm and trip contact
• Oil temperature indicator with alarm and trip contact
• Winding temperature indicator with alarm and trip contact
• Magnetic oil level gauge with alarm contact
• Marshalling box to house O.T.I. and W.T.T.
• Neutral C.T
• Shut-off valves