4D28-90

Technical Characteristics

• Mounting Facility Quantity

  4 single group

• Transformer Winding Connection Type

  wye-wye

• Terminal Type And Quantity

  10 turret

• Overall Length

  2.900 inches nominal

• Body Width

  2.360 inches minimum and 2.440 inches maximum

• Mounting Method

  threaded hole single group

• Inclosure Type

  fully inclosed

• Winding Function And Quantity

  1 primary single component and 1 secondary single component

• Input-Output Phase Relationship

  three phase to three phase single component

• Center To Center Distance Between Mounting Facilities Parallel To Width

  2.000 inches nominal single mounting facility single center group

• Reliability Indicator

  not established

• Frequency Rating

  400.0 hertz nominal single component

• Thread Class (Non-Core)

  err-070

• Center To Center Distance Between Mounting Facilities Parallel To Length

  2.500 inches nominal single mounting facility single center group

• Maximum Operating Temp

  130.0 deg celsius

• Thread Series Designator

  unc single group

• Winding Operating Voltage

  115.00 ac volts nominal single component single primary or 200.00 ac volts nominal single component single primary

• Special Features

  transformer is designed to run different combinations of wye to delta or delta to wye

• Winding Operating Current

  870.0 milliamperes ac minimum single component single secondary and 1.5 amperes ac maximum single component single secondary

• Winding Operating Voltage

  20.00 ac volts nominal single component single secondary or 34.60 ac volts nominal single component single secondary

• Unpackaged Unit Weight (Non-Core)

  1.300 pounds

• Thread Direction (Non-Core)

  err-070

• Nominal Thread Size

  0.138 inches single group

• Overall Height

  1.450 inches nominal