ABB FGD Backup Transformer Oil Immersed

Type: Transformer FGD

Manufacturer/Model/ID: ABB 121445

Voltage Rating: 6.9 - 11.5 kV

Apparent Power Rating: 12 MVA

Frequency: 50 Hz

Year of Manufacture: May 2015

Standard: IEEE C57.12

General Information: ABB FGD Backup Transformer Oil Immersed

• Serial No.: 2012501

• Identification: 010110

• Year of Manufacture: 2012

• Standard: IEC 60076-1:2000

Rated Power and Voltages:

• Rated Power: 1600 kVA

• Primary Voltage:

  • 13.2 kV (with taps)

  • Taps: 13.86 kV, 13.53 kV, 13.2 kV, 12.87 kV, 12.54 kV (likely corresponding to +5%, +2.5%, 0%, -2.5%, -5% of 13.2 kV)

• Secondary Voltage: 0.69 kV (690 V)

Currents:

• Primary Current: 70.0 A

• Secondary Current: 1340 A

Connection Type:

• Connection: Dyn11 (Delta primary, Wye secondary with neutral brought out, and a phase displacement of 30 degrees, leading the primary)

Impedance:

• Short-circuit Impedance: 6.0 %

Temperature Rise:

• Winding Temperature Rise: 65 K (Kelvin)

• Oil Temperature Rise: 60 K (Kelvin)

Cooling Type:

• Cooling Type: ONAN (Oil Natural Air Natural)

Insulation Levels:

• Insulation Level:

  • Primary:

    • Power Frequency Withstand Voltage: 38 kV

    • Lightning Impulse Withstand Voltage (LIWV): 95 kV

  • Secondary:

    • Power Frequency Withstand Voltage: 3 kV

    • Lightning Impulse Withstand Voltage (LIWV): 20 kV

Other Details:

• Frequency: 50 Hz

• Total Mass: 4600 kg

• Oil Mass: 1100 kg

• Active Part Mass: 2850 kg (This refers to the core and windings)

• Max Ambient Temperature: 40 °C

• Noise Level: 64 dB