Connection B
(See page 11 if the generator will be paralleled using this connection)
Connection B is a Half-Wave rectified configuration, which allows a continuous output of 63VDC @
8A with an input voltage of 240VAC.
This connection is typically used on a majority of brushless generator excitation fields (generally
referred to as 63V fields) or on shunt control fields where the full-load excitation voltage is greater
than 32VDC, but less than or equal to 63VDC.
Note that the maximum input voltage to the XR8 Universal Voltage regulator is 240VAC!
DO NOT input 277VAC into the XR8! 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 XR8 to 2 different legs of the generator as shown in the diagram below
will result in greater regulation accuracy than when connecting line-neutral.
with the incoming power to terminals #1 and #2 on the XR8.
NEVER install a switch or breaker on the DC or Exciter side of the voltage regulator!
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