National Mineral Development Corporation Limited

National Mineral Development Corporation Limited has published Bids Are Invited For Power Transformer Dry Type Rated Power In Mva:2 Voltage At No Load Hv Side In Kv:6.6 Voltage At No Load Lv Side In Kv:0.433 Phase:3 Vector Group: Dyn11 Type Of Cooling:Air Natural Winding Material(Copper-C):Copper Application:Power Distribution Insulation Type( Cast Resin/Vip):Cast Resin % Impedance:6.25 Frequency:50 Hz +3% -6% Short Circuit Withstand Current With Time:50 Ka For 1 Sec Insulation Class:F/B Tap Changer Type:Off Circuit Tap Link(Bolted Link Type), Manual Control Tap Range:+5% To -5% No Of Taps:5 Insulation Level:1 Min Power Frequency Withstand Voltage Hv-20 Kvrms: Lv- 3Kvrms, Imuplse Test Withstand Voltage Hv-60Kv Peak, Max System Voltage Hv-7.2 Kv:Lv-1.1Kv Installation Location(Indoor/Outdoor):Indoor Accessories(Bushings/Sensors/Temperature Meter/):Bushing, Temperature Meter Primary Connection Type:Delta Secondary Connection Type:Star Bidirectional Wheel Center To Center To Distance:1070 +- 5 Mm Standard:Is:11171, Is2026 Additiona Total Quantity : 1. Last date of submission for this tender is 2026-03-23. This is a Power Transformer tender in Bastar, Chhattisgarh