Main range of productMinera product or component typeOil type transformer network typeAC type of installationIndoor/outdoor product certificationsIS 1180 relay typeOTI relayWTI relayBR relayPRV relay Complementary type of coolingONAN (oil natural air natural) rated power2500 kVA network frequency50 Hz thermal classA phase description3 phases primary voltage11 kV electrical connectionCable box high voltage connectionBus duct low voltage connection isolation levelPrimary: 12 kV ACSecondary: 1 kV AC [Ui] rated insulation voltagePrimary circuit : 28 kV ACSecondary circuit : 3 kV AC [Uimp] rated impulse withstand voltage75 kV secondary voltage433 V at operation/loading as per IS standard vector groupDyn11 tapping link range- 10...5 x 2.5 % total number of steps6 temperature rise40/45 K (oil and winding insulation) impedance voltage6.25 % operating altitude< 1000 m winding materialCopper mounting modeGround mounted IP degree of protectionIP55 low voltage cable boxIP00 conventional conforming to IS 2099IP00 conventional conforming to IS 3347 product weight7830 kg height2800 mm width3000 mm length3200 mm Environment ambient air temperature for operation-6...50 °C ambient air temperature for storage-6...50 °C standardsNEMA environmental certification0...95 % fire certificateLevel 2 ambient air temperature for operation50 °C
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