TT6745

Technical Characteristics

• Center To Center Distance Between Mounting Facilities Parallel To Length

  6.453 inches minimum single mounting facility single center group and 6.547 inches maximum

• Frequency Rating

  60.0 hertz nominal single component

• Input-Output Phase Relationship

  three phase to three phase single component

• Transformer Winding Connection Type

  open delta-wye

• Winding Shielding Method

  internal shield grounded to inclosure and core and brought out to terminal single component

• Body Height

  5.500 inches maximum

• Mounting Facility Quantity

  4 single group

• Thread Quantity Per Inch

  20 single group

• Winding Operating Voltage

  1.381 ac kilovolts nominal single component single secondary and 1.535 ac kilovolts nominal and 1.688 ac kilovolts nominal

• Winding Operating Voltage

  208.00 ac volts nominal single component all primary

• Terminal Type And Quantity

  28 standoff, solder lug

• Overall Length

  7.500 inches maximum

• Thread Series Designator

  unc single group

• Special Features

  three auxiliary windings included,provided w/taps inthe form of a buck-boost winding such that it will buck or boost theoutput by 2,6 or 10 pct

• Winding Operating Current

  163.0 milliamperes dc maximum single component single secondary

• Winding Tap Location

  multiple taps w/o center tap single component single secondary

• Nominal Thread Size

  0.250 inches single group

• Winding Function And Quantity

  3 primary single component and 1 secondary

• Mounting Method

  threaded stud single group

• Inclosure Type

  hermetically sealed

• Overall Width

  5.750 inches maximum

• Overall Height

  6.380 inches maximum

• Center To Center Distance Between Mounting Facilities Parallel To Width

  4.953 inches minimum single mounting facility single center group and 5.047 inches maximum

• Reliability Indicator

  not established

• Thread Direction

  right-hand single group

• Thread Class

  2a single group