Connection A
(See page 9 if the generator will be paralleled using this connection)
Connection A is a Full-Wave rectified configuration, which allows a continuous output
of 210VDC @ 5A with an input voltage of 240VAC.
This connection is typically used on higher voltage excitation fields (generally referred to
as 125V fields) or on shunt control fields where the full-load excitation voltage is greater
than 63VDC.
Note that the maximum input voltage to the XR5C Universal Voltage regulator is
240VAC! DO NOT input 277VAC into the XR5C! Severe damage to the unit will
result! For use on 480V systems, either connect the regulator to the winding center
taps T7 and T9 (See Page 6) or use a 480-240V step-down transformer rated at
1KVA.
Connecting the input of the XR5C to 2 different legs of the generator as shown in the
diagram below will result in greater regulation accuracy than when connecting line-
neutral.
If the generator is to be operated below 50/60 Hz, a disconnect or switch should be installed in
series with the incoming power to terminals #1 and #2 on the XR5C.
NEVER install a switch or breaker on the DC or Exciter side of the voltage regulator!
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