TF1279

Technical Characteristics

• Terminal Type And Quantity

  21 tab, solder lug

• Special Features

  one primary winding,and six secondary windings

• Winding Operating Voltage

  8.90 ac volts nominal single component 3rd secondary

• Winding Operating Voltage

  21.00 ac volts nominal single component 1st secondary

• Winding Operating Voltage

  196.00 ac volts nominal single component single primary

• Winding Power Rating

  51.5 volts-amperes single component 2nd secondary

• Winding Power Rating

  51.5 volts-amperes single component 1st secondary

• Winding Power Rating

  13.5 volts-amperes single component 4th secondary

• Winding Operating Current

  2.45 amperes ac nominal single component 1st secondary

• Nominal Thread Size

  0.112 inches 1st group

• Thread Quantity Per Inch

  40 single group

• Winding Function And Quantity

  1 primary single component and 6 secondary

• Inclosure Type

  hermetically sealed

• Maximum Operating Temp

  155.0 deg celsius

• Body Height

  2.720 inches maximum

• Body Length

  3.800 inches maximum

• Frequency Rating

  400.0 hertz nominal single component

• Center To Center Distance Between Mounting Facilities Parallel To Width

  1.190 inches minimum single mounting facility 2nd center group and 1.210 inches maximum

• Center To Center Distance Between Mounting Facilities Parallel To Length

  2.865 inches minimum single mounting facility all center groupings and 2.895 inches maximum

• Reliability Indicator

  not established

• Thread Series Designator

  unc all groupings

• Winding Operating Voltage

  27.60 ac volts nominal single component 4th secondary

• Winding Operating Voltage

  21.00 ac volts nominal single component 2nd secondary

• Winding Power Rating

  7.3 volts-amperes single component 3rd secondary

• Winding Operating Current

  820.0 milliamperes ac nominal single component 3rd secondary

• Winding Operating Current

  490.0 milliamperes ac nominal single component 4th secondary

• Winding Operating Current

  2.45 amperes ac nominal single component 2nd secondary

• Nominal Thread Size

  0.164 inches 2nd group

• Mounting Method

  bushing all groupings

• Mounting Facility Quantity

  4 all groupings

• Body Width

  2.120 inches maximum

• Winding Shielding Method

  internal shield grounded to inclosure single component

• Transformer Winding Connection Type

  delta-delta

• Input-Output Phase Relationship

  three phase to three phase single component

• Center To Center Distance Between Mounting Facilities Parallel To Width

  1.665 inches minimum single mounting facility 1st center group and 1.685 inches maximum

• Thread Direction

  right-hand all groupings

• Thread Class

  2a all groupings