GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate...

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Transformer Location High Side Bus Name and Number: ____________________ Low Side Bus Name and Number: ____________________ Two-winding Transformers Provide the following information from the transformer nameplate data and a picture of the nameplate. A. Transformer Type Indicate whether the transformer is a 3-phase unit or three 1-phase units. Transformer Type (Phases) B. Transformer MVA Ratings Cooling ONAN ONAF ONAF2 Rating, MVA Indicate which cooling method is normally used under full power output C. Transformer Impedance MVA Base High-Low Impedance, Percent D. Nominal Voltage and Configuration Nominal Voltage Configuration [Δ, Y, Ygrd ] High Side Low Side E. No-Load Tap Positions High Side

Transcript of GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate...

Page 1: GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate which cooling method is normally used under full power output Transformer Impedance

Transformer Location

High Side Bus Name and Number: ____________________

Low Side Bus Name and Number: ____________________

Two-winding Transformers

Provide the following information from the transformer nameplate data and a picture of the nameplate.

A. Transformer Type

Indicate whether the transformer is a 3-phase unit or three 1-phase units.

Transformer Type (Phases)

B. Transformer MVA Ratings

Cooling ONAN ONAF ONAF2Rating, MVAIndicate which cooling method is normally used under full power output

C. Transformer Impedance

MVA BaseHigh-Low Impedance, Percent

D. Nominal Voltage and Configuration

Nominal Voltage Configuration [Δ, Y, Ygrd ]

High SideLow Side

E. No-Load Tap Positions

High Side

High Side Tap # kV12345Indicate the actual operating tap by marking an X next to the tap position

Page 2: GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate which cooling method is normally used under full power output Transformer Impedance

Low Side

Low Side Tap # kV

Indicate the actual operating tap number (if applicable)

F. For Load Tap Changers

Tap Changer winding

(H, X, or Y)

Tap Range [kV or Percent]

Taps Down Taps Up

Step size No. of Steps Step size No. of Steps

Regulated voltage: ____________ percent, or Volts

Controlled bus: ____________ Dead-band: ____________ percent, or Volts

Tap changer time constant: _____________ sec

Example for Two-winding Transformers

Provide the following information from the transformer nameplate data

A. Transformer Type

Indicate whether the transformer is a 3-phase unit or three 1-phase units.

Transformer Type (Phases) 3

B. Transformer MVA Ratings

Cooling ONAN ONAF ONAF2Rating, MVA 150 200 250ONAF cooling, 200 MVA Rating

C. Transformer Impedance

MVA Base 150High-Low Impedance, Percent 8.97

D. Nominal Voltage

Page 3: GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate which cooling method is normally used under full power output Transformer Impedance

High Side, kV 525Low Side, kV 18

E. No-Load Tap Positions

High Side

High Side Tap # kV1 551,2502 – X 538,1253 525,0004 511,8755 498,750Indicate the actual operating tap = 2

Low Side

Low Side Tap # kVX 18Indicate the actual operating tap

F. For Load Tap Changers

Tap Changer winding

(H, X, or Y)

Tap Range [kV or Percent]

Taps Down Taps Up

Step size No. of Steps Step size No. of Steps

Regulated voltage: ____________ percent, or Volts

Controlled bus: ____________ Dead-band: ____________ percent, or Volts

Tap changer time constant: _____________ sec

Page 4: GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate which cooling method is normally used under full power output Transformer Impedance
Page 5: GSU Transformer Data Template - Western Electricity ... Transformer Data... · Web viewIndicate which cooling method is normally used under full power output Transformer Impedance