© 2018 Power-Tronics, Inc.
11
Parallel Configuration for Connection B
To use the XR5B-400 Universal Voltage Regulator in a parallel configuration either with
another generator or with a buss such as a utility, use the diagram below for proper
hookup with the XR5B-400 configured for Connection B.
NOTE:
Power-Tronics products parallel using the Reactive Droop compensation method. This allows
our products to parallel with existing systems easily while also allowing islanded operation with the flip of
a switch. When initially installing the droop resistor, set it for approximately 3Ω before final adjustment
later. If the droop is excessive when load testing, reduce the resistance a bit at a time until satisfactory
droop is achieved.
CT should be sized at 25-35VA burden!
XR5B-400 Specialty Series
Universal Voltage Regulator
240VAC
MAX
Secondary
Voltage!
100K, 2W
Unit/Parallel
Switch
Reactive Droop
Adjustment
10Ω, 100W
CT Rating:
XXX/5A @ 25-35VA
Transformer
Rating:
XXX:240V
@ 1KVA
Regulator On/Off
Switch
Rate for:
Primary Voltage
@ 10A
Setup Tips:
•
Isolation Transformer is
recommended for best
results, but is optional if
208/240V is present on
generator.
•
Size CT as closely to rated
generator output amperage
as possible for best
paralleling results.
An
oversized CT will result in
poor paralleling or loss of
control!
•
If generator terminal voltage
rises, or if generator exports
VARS excessively under
load, reverse CT leads.
•
If the reactive droop
resistor/rheostat gives
erratic results or
inconsistent resistance,
lightly sand the exposed
wire with 400 grit sandpaper
to improve connection
between wire and slider.
