Distribution oil-filled transformer with off-circuit tap switch

Key Attributes.

Specifications:

• 3 phase, 50 Hz in voltages of 11 kV, 22kV and 33kV
• Off circuit tap changer to provide +5% to-10% taps in steps of 2.5%
• On-load tap changer to provide +7% to -21% taps m steps of 1 75%
• Class A insulated
• Vector group Dyn 11
• Continuous duty
• Copper wound
• Painting as per IS/IEC standards
• HV side cable box
• LV side cable box/bus duct
• Standard fittings as per IS 2026/IEC 76

Features:

• Design conforms to IS 2026. BS 171, IEC 76 and other relevant standards
• Low power loss and low noise
• Designed to withstand electrical impulses, thermal and dynamic stresses
• Optimum utilization of active materials for compactness
• Modern manufacturing techniques ensure cost effectiveness and reliability

Optional accessories:

• Pressure relief valve without contact/with contact
• Buchholz 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 oil temperature indicator and winding temperature indicator
• Neutral current transformer