© 2018 Power-Tronics, Inc.
3
Introduction and Functional Description
Caution:
Read This Installation
Manual Carefully and Entirely!
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 equipment or in personal injury!
ALWAYS
perform all setup procedures off-line
ALWAYS
wear eye protection
ALWAYS
strip wire insulation properly or use insulated connectors
ALWAYS
use analog metering equipment when setting up the regulator
ALWAYS
ensure the regulator receives ample airflow
NEVER
hold the regulator in your hand when energized
NEVER
install the regulator in a place it can get wet or is exposed to the elements
NEVER
mount the regulator over a screw, bolt, rivet, welding seam, or other fastener
NEVER
remove the regulator cover while the unit is in operation
NEVER
insert a screwdriver or other object under the regulator cover
NEVER
install a switch in the DC portion of the regulator’s wiring
NEVER USE A DIGITAL FREQUENCY METER
(It
can give a false reading
!)
Functional Description
The XR5B-400 Universal Voltage Regulator is the result of over 20 years of engineering efforts and offers high-
demand features at a competitive price point. The XR5B-400 is a proven design and is engineered to greatly
simplify setup while offering extreme reliability. When properly installed, the XR5B-400 Universal Voltage
Regulator is designed to provide a lifetime of service.
A Generator voltage regulator has several automated tasks it must perform in order to provide reliable, clean,
and regulated electricity. It must build-up the generator, regulate the terminal voltage within its design
specifications, and protect both itself and the generator should a fault situation arise.
The XR5B-400 contains a time-proven, extremely reliable circuit for build-up functionality. Due to its simplicity,
the XR5B-400 is able to build up generators with residual voltages from 3.5VAC without initial overshoot or
excessive delay. The patented circuitry contained in the XR5B-400 allows the user to adjust the regulator to
match the generator’s response time, minimizing setup complexity while maximizing load acceptance and
rejection performance. The XR5B-400 is also a precision voltage regulator and is capable of regulating the
terminal voltage of the generator /-1% of its initial set point.
The XR5B-400 uses field-replaceable 20mm glass cartridge fuses to protect its internal circuitry should a fault
occur and the exciter field current exceeds what the regulator is capable of delivering
Due to its extreme simplicity, the XR5B-400 Universal Voltage Regulator is uncommonly reliable and offers
features and regulation accuracy usually only offered by much more complicated and often much more
expensive regulators.
