© 2020 Power-Tronics, Inc.
XR8
Professional Series
Universal Voltage Regulator
REVISION A (or later)
The Power-Tronics XR8 Universal Voltage
Regulator is the latest upgrade for all UVR and
XR series voltage regulators and features an
upgraded regulation system and a higher
amperage rectifier section capable of 8 amps!
The XR8 is also capable of replacing other
manufacturers' voltage regulators and has
optional Static Exciter Modules to boost its
capacity to 30 amps DC!
The XR8 is designed specifically for Professional
Electrical Generator Service Technicians and
the Electrical Generator Repair Industry. It
incorporates an easily selectable frequency
range for voltage roll-off during under-frequency
operation and offers precise voltage regulation
regardless of the connected load and ambient
temperature. The XR8 is a ruggedized design
and is engineered to provide a lifetime of
trouble-free, reliable operation.
Manual stability matching is a thing of the past,
the XR8 contains patented electronic circuitry
that automatically matches the regulator's
response time to the generator exciter. This
greatly speeds installation and eliminates
guesswork.
PLC and automated Genset control is possible
with the XR8 by simply adding an optional,
inexpensive digital interface module. This
capability makes the XR8 suitable for automated
or unattended installations, or large-scale
parallel operations.
Like our previous models, the XR8 is fully
repairable! All major electronic components are
not encapsulated to facilitate repair while all
sensitive components are encapsulated to
protect them from contamination and moisture.
The XR8 is compatible with all previous and
current optional modules available for use with
Power-Tronics voltage regulators making it
extremely simple to upgrade an existing voltage
regulator installation.
Specifications
Input Voltage:
120 / 208 or 240vac
Frequency:
50 or 60hz
Voltage Regulation:
± .25% From NL to FL
Parallel Operation
Yes
Maximum Output Voltage:
52vdc @ 120vac input
105vdc @ 240vac input
210vdc @ 240vac input
Continuous Output Voltage:
32vdc @ 120vac input
63vdc @ 240vac input
125vdc @ 240vac input
Maximum Continuous Output:
8adc
Minimum Field Resistance:
6.5Ω @ 32vdc output
13Ω @ 63vdc output
26Ω @ 125vdc output
Min Residual Build up Voltage:
3.5vac
Under Frequency Protection:
Yes, VPH reduction
Physical Size:
4.75 x 6 x 1 in.
Weight:
7 oz
Repairable:
Yes
Internal Protection:
Fuses, cartridge type
External Voltage Adjustment:
Yes
System Operating Indicator:
Yes
Optional Static Exciter Modules
:
Yes
Optional External Controls
:
Yes
Cartridge Fuse Type:
3AG 10A @ 250V Fast-Blow
Optional External Potentiometer:
100KΩ @ 2W
External Adjustment Range:
±10% of Terminal Voltage
