640A1

Technical Characteristics

• Mounting Facility Quantity

  4 single group

• Winding Operating Voltage

  710.00 ac volts nominal single component 2nd secondary

• Terminal Type And Quantity

  11 tab, solder lug

• Nominal Thread Size

  0.164 inches single group

• Mounting Method

  threaded stud single group

• Thread Quantity Per Inch

  32 single group

• Winding Function And Quantity

  1 primary single component and 2 secondary single component

• Overall Width

  3.062 inches nominal

• Reliability Indicator

  not established

• Body Length

  3.562 inches nominal

• Center To Center Distance Between Mounting Facilities Parallel To Length

  2.625 inches nominal single mounting facility single center group

• Input-Output Phase Relationship

  single phase to single phase single component

• Winding Operating Current

  2.0 amperes ac maximum single component 1st secondary

• Inclosure Type

  hermetically sealed

• Thread Series Designator

  unc single group

• Body Height

  4.875 inches nominal

• Frequency Rating

  54.0 hertz minimum single component and 66.0 hertz maximum single component

• Winding Operating Current

  99.0 milliamperes ac maximum single component 2nd secondary

• Winding Operating Voltage

  126.00 ac volts nominal single component single primary and 120.00 ac volts nominal single component single primary and 115.00 ac volts nominal single component single primary and 132.00 ac volts nominal single component single primary

• Body Width

  3.062 inches nominal

• Center To Center Distance Between Mounting Facilities Parallel To Width

  2.125 inches nominal single mounting facility single center group

• Winding Operating Voltage

  5.00 ac volts nominal single component 1st secondary and 6.30 ac volts nominal single component 1st secondary

• Overall Length

  3.562 inches nominal