14
Initial Setup and Commissioning
1. Install the regulator and wire according to the correct wiring
diagram (Connection A, B, or C).
2. If installing the XR8 on a brush-type generator, verify that the
brushes and brush riggings are isolated, ungrounded, and
connected ONLY to the XR8.
3. Turn the internal voltage control 15 or more turns counter
clockwise (left) or until you hear the screw click. This procedure is
necessary in case the original factory settings have been altered.
4. If you are using a remote voltage adjustment, set it at 50% of
adjustment.
5. If the generator is to be paralleled, set the droop resistor between
6Ω and 10Ω.
6. Start up the prime mover and bring up to operating speed and turn
on the regulator switch (if used).
7. Set the internal voltage adjustment to the desired voltage setting
for the generator output by turning the adjustment screw
clockwise (right).
The voltage adjustment is a 25-turn pot!
NOTE:
The maximum internal voltage setpoint is 260VAC! This helps
prevent accidental over-voltage conditions due to incorrect installation!
8. Place the generator on line and observe the frequency and voltage.
9. If the generator is being paralleled, measure the droop during loading and adjust the droop resistor as
necessary. Reducing droop resistor resistance will reduce droop.
NOTE:
Loading the generator with a purely resistive load-bank may cause undesirable droop
characteristics such as no droop, very slight droop, or even rising terminal voltage. Measure droop
with a mixed load for best results.
10. If paralleling and the terminal voltage rises or excessive amperage exportation occurs during loading with a
mixed load connected, reverse the CT leads and try again.
11. Observe voltage regulation during no-load and full-load conditions. Once the voltage is set and regulating
characteristics are satisfactory the installation procedure is complete.
Voltage
Adjustment
(25 Turn!)
Status Lamp
50/60Hz FF
Selection
REMOVE
JUMPER
for 50Hz!
