isolation transformer
allows trouble-free operation of electronic
equipment over a very wide mains ac
voltage range of 400V+/-20% found in
many developing countries.
There is no switching of taps nor any break
in the power path thanks to continuous
pulse width modulation (PWM) switching of
a buck-boost transformer primary winding.
Typical applications
Designed for applications where absolutely
safe and precisely regulated ac power is
required, such as radio base stations (RBS),
telecommunication transmission sites for
backhaul (including microwave links), TV/
radio broadcasting, industrial equipment and
end-of-line utility equipment.

International
Precision voltage regulator
Isolation transformer
Precision PWM Automatic Voltage
Regulator with Isolation Transformer,
Automatic Bypass and Automatic Cutoff
Key Outdoor VRp-ILc features
Outstanding voltage regulation
performance:
output is within 230/400vac+/-3%
under a normal input range
of 400vac +/-20%
No switching of power path and
unit always starts up on sine wave
zero crossing
Over-voltage cutoff, with automatic
restart when ac mains voltage
returns to normal (safe) condition
Failsafe: automatic bypass (even
during bypass, the over-voltage
protection is active)
Lightweight design
A three phase low-impedance
isolation transformer is used
for maximum reliability
Coordinated surge protection
per IEC61312
Advanced noise and interference
filter reduces dV/dt from
6kV/
µ
s
to less than 10V/
µ
s
Pedestal-mountable cabinet
Common-mode noise elimination
IP23 outer enclosure with sensitive
components housed in an IP55
inner case (overall equivalent to
IP44/NEMA-3R)
Two year warranty
VRp-ILc
VRp-ILc
Outdoor
Outdoor
Power with a
Precision Attitude Outdoor-VRp-ILc-15000/30000-5339 ~ 15/30kVA, 400 vac delta,230/400 vac wye
VRp-ILc
provides
continuous,
fast, no-break
voltage regulation
TSi Power Corporation
Represented by
CareBase
Michael Gibson
Post Office Box 2987
Glenwood Springs, CO
81602-2987 USA
Phone +1 970 945 2770
800 430 2770 (USA.CAN)
michaelg@carebase.com
www.carebase.com
Copyright © 2006 TSi 114
Outdoor VRp-ILc Series
Outdoor-VRp-ILc-15000/30000-5339
Key Outdoor VRp-ILc benefits
The lightweight, high efficiency Outdoor VRp-ILc is easy to install in outdoor
environments. The unit comes in a specially designed outdoor rated enclosure
with multiple air exhaust fans. To maximize cooling, the isolation transformer is
housed in an IP23 outer enclosure. Sensitive components are housed in an IP55
inner case. Overall equivalent is to an IP44(NEMA-3R) enclosure.
The automatic bypass assures that connected equipment will not shut down,
even if VRp-ILc fails. VRp-ILc is compatible with all loads as it does not switch
any components in the power path. VRp-ILcs ultra-low impedance assures
stability even with the most demanding loads.
The automatic over-voltage cutoff with automatic restart ensures that operation
is off-line during serious over-voltage situations that could damage the system
and/or load, and then restarts without intervention when the ac mains voltage
returns to the normal operating range.
The ILc isolation line conditioner components provide maximum equipment
protection against surges, spikes and transients, for higher equipment reliability
and maximum equipment operating life. In addition, the VRp-ILc offers
improved repeatability, fewer reboots or system lock-ups. A reduction in
equipment down time and service costs can also be expected.
How the Outdoor VRp-ILc works
The high frequency insulated gate bi-polar transistor (IGBT) driven converter
takes the incoming ac power, measures against the nominal voltage and adds
or subtracts voltage, 20,000 times per second, to achieve precisely regulated
230/400 vac three phase output.
The Automatic Bypass will be activated when there is a fault condition.
A green LED indicates normal regulated protected mode operation.
The over-voltage cutoff is activated whenever the ac mains voltage becomes
dangerously high (over 475vac). It automatically restarts whenever ac mains
voltage is restored to a safe level.
At extremely low ac input conditions it can be operated at limited duty cycle.
A low-impedance isolation transformer provides complete isolation between the
primary and secondary, and permits bonding between output neutral to ground,
which completely eliminates all disturbances between neutral and ground.
The leakage inductance of the isolation transformer, in combination with
capacitive elements and metal oxide varistors (MOVs), provide superb noise
filtering, as well as coordinated multi-stage surge protection in accordance with
the principles of IEC-61312. Multiple cooling fans control the units internal
temperature, with intakes at the bottom of the unit and exhaust through the top
rear of the unit, protected with a rain guard/sunshield.
Outdoor rated
precision PWM
voltage regulator
with isolation
transformer
VRp-ILc
VRp-ILc
Outdoor
Outdoor
Power with a
Precision Attitude TSi Power Corporation
Represented by
CareBase
Michael Gibson
Post Office Box 2987
Glenwood Springs, CO
81602-2987 USA
Phone +1 970 945 2770
800 430 2770 (USA.CAN)
michaelg@carebase.com
www.carebase.com
Copyright © 2006 TSi Specifications
Precision Voltage Regulator + Isolation Transformer 115

Specification
15000-5339
30000-5339
Electrical
Capacity in VA (watts)
15kVA (15kW)
30kVA (30kW)
Regulator technology


High frequency IGBT driven voltage regulation converter
Transformer type
Three phase isolation transformer used
Input

Nominal voltage
Three phase delta: 400 volts ac
Normal operating range

400 volts ac +/-25% at limited duty cycle
Nominal frequency
47 to 63 Hz
Input circuit breaker

Input circuit breaker with limited inrush current capability.
Over-voltage cutoff
with auto-restart

Over-voltage cutoff activated when >475vac with
automatic restart when voltage returns to normal.
Circuit breaker rating
40A
60A
Input wire size
10mm
2
(AWG 8)
15mm
2
(AWG 6)
Ac connection

Terminal block (L1, L2, L3 and ground wires) provided.
Output
Nominal voltage
Three phase wye: 230/400 volts ac
Power efficiency
95% maximum
Voltage regulation
Better than +/-3%
Automatic bypass
Automatic bypass will be activated when there is a fault condition.
Overload protection
Output circuit breaker provides protection against overload conditions.
Surge protection
A three-stage surge protection system consisting of isolation
transformer, capacitor and MOV is included.
System status indicator
Green LED indicates Normal (regulating) mode operation.
Surge test conditions
Class 2 and Class 3 Simulated lightning surge (Combination wave)
Per ANSI/IEEE C62.41-1991, Cat. C test waveform: 6kV,3kA,8x20µs.
Optional Class 1 surge arrester available for primary protection.
Surge let-through
voltages
Single pulse: L-N: 50 V, L-G: 50V, N-G: 0.5V
Ring wave: L-N: 20V, L-G: 20V, N-G: 0.5V
Combination wave: L-N: 250V, L-G: 250V, N-G: 0.5V
Measured rate of voltage rise/fall (dV/dt) of the remnant waveform
is less than 10V/µs with input test waveform dV/dt of 6kV/µs.
Common mode filtering
Neutral-ground bond eliminates all noise or voltage on neutral (< 0.5V)
Normal mode filtering
A built-in inductor-capacitor filter attenuates EMI/RFI noise from output.
Circuit breaker rating
30A
50A
Output wire size
6mm
2
(AWG 10)
15mm
2
(AWG 6)
Ac connection
Terminal block (L1, L2, L3, neutral and ground wires) provided.
Physical
Dimensions
1040mm(40.9)wide
450mm(17.7)deep
1170mm(46.1)high
1150mm(45.3)wide
600mm(23.6)deep
1300mm(51.2) high
Weight
250kg (550 lbs)
450kg(990 lbs)
Safety
Standards
Designed to meet IEC 60950 standards.
Environmental
Ambient temperature
-20
o
to +40
o
C(-4
o
to +104
o
F).
Cooling method
Multiple air exhaust fans are used.
Weather protection
IP23 outer enclosure with sensitive components housed in
an IP55 inner case (overall equivalent to IP44/NEMA-3R).
Warranty
Warranty
Two year limited warranty, parts and labor.
TSis ongoing product
improvement process makes
specifications subject to
change. Other companies
product names herein are for
identification purposes only,
and may be trademarks of
their respective companies.
Outdoor precision
PWM voltage
regulator with
isolation transformer
VRp-ILc
VRp-ILc
Outdoor
Outdoor
Power with a
Precision Attitude Specifications
TSi Power Corporation
Represented by
CareBase
Michael Gibson
Post Office Box 2987
Glenwood Springs, CO
81602-2987 USA
Phone +1 970 945 2770
800 430 2770 (USA.CAN)
michaelg@carebase.com
www.carebase.com
Copyright © 2006 TSi 116
Outdoor VRp-ILc Series
Outdoor-VRp-ILc-15000/30000-5339
the Outdoor VRp-ILc provides
excellent protection, superior
thermal management and
ease of installation
Front right side view
Outdoor VRp-ILc system architecture (per phase)
ground
3 phase
circuit breaker
L2
G
L1
buck-boost
transformer
L
N
microprocessor
control
230vac
+/-3%
VRp-ILc
output
automatic bypass
over-voltage
cutoff
surge
prot.
and
noise
filter
input
400vac
+/-20%
isolation transformer
noise
filter
dc
ac
ground
130
0m
m
Outdoor-VRp-ILc-15000-30000-5339-2006-10-16.pdf
VRp-ILc
VRp-ILc
Outdoor
Outdoor
ventilated
base
600mm
Right side rear view
input/output
cable glands openings
hot air
exhaust
front panel
is a hinged
door with locks
(23.6)
(
51.
2)
1150mm
(45.3)
model
-30000
450mm
(17.7)
model
-15000
1040mm
(40.9)
1
170
mm
(