3
Installation Instructions
Warning:
Do not use digital equipment to read voltage, hz or amperage during this
installation. Use only Analog sensing equipment! Failure to do so may result in damage to of
equipment or in personal injury! Make sure that all setup is done off line. Always wear eye
protection and never hold the regulator in your hand when energized.
1.
Install the regulator as shown in the drawing below:
1 2 3 4 5 6
FUSE
FUSE
A
B
C
N
GENERATOR
EXC FLD
OFF/ON
REMOTE
V
ADJUST
VR758
Wiring diagram for 208/240vac hookup. For 460/480vac hookup, connect to center taps of
main windings for 208/240vac input.
2.
Determine if the application requires the regulator to be VPH or Flat Response mode.
The regulator is shipped as VPH
.
3.
If the regulator is to be configured as Flat Response, remove the jumper located on the
circuit card just below the internal voltage adjustment as shown below:
Remove this jumper for flat
response operation.
VR758
Use a fast acting 250vac
fuse. 10 amps or less!
If the external
adjustment is
not used, it is
not necessary to
jumper 5 and 6
