| The AR-20 delivers a stable stream of AC power to protect
equipment from problems caused by AC line voltage irregularities
such as sags, brownouts, or over-voltages - all of which can
cause sensitive electronic equipment to malfunction or sustain
damage. Featuring a generous 20 amp capacity, the AR-20 accepts
any input voltage from 97V to 141V and transforms it to a
constant 120V. Voltages beyond this range are also converted to
usable levels, unless they are extremely far out of range, in
which case the unit will automatically power down to prevent
equipment damage.
Additionally, the AR-20 is the only 20 amp regulator that
filters and purifies AC power, reducing line noise linearly and
ensuring optimum performance. Your equipment will perform at
optimum levels and will be fully protected from spikes and surges
by Furman's exclusive SMP+ technology. This virtually
maintenance-free surge suppression system incorporates Linear
Filtering Technology (LiFT), Extreme Voltage Shutdown (E.V.S.),
and high current TVZ MOVs to provide the highest level of power
protection available - all without the need for servicing or
replacement of the unit. Just install it in your rack and forget
about it!
Many competitive voltage regulators use noise-inducing,
motorized transformer-based technology. This results in large,
expensive, and less reliable units which cannot match the level
of performance delivered by the AR-20. Essentially,
Furman's advanced technology allows us to offer superior
performance in a cost effective unit.
The AR-20's circuitry monitors the incoming line voltage
with each cycle, comparing it to an extremely precise voltage
reference, accurate to ±0.15%. The design is not sensitive
to small errors in line frequency, making it ideal for use with
generators. If a voltage fluctuation requires that a different
tap be selected, the new tap is switched electronically at the
zero-crossing, to avoid distorting the AC waveform. (Most
commercial voltage regulators usingmultiple-tapped transformers
switch taps at uncontrolled times, thereby creating voltage
spikes, and often creating clicks that can leak into the
audio.)
The AR-20 has twelve outlets on the rear panel and two
convenience outlets on the front panel. All outlets are
regulated, spike-suppressed, and filtered against radio frequency
and electromagnetic interference. The twelve rear outlets are
divided into two separate banks with bi-directional filtering for
either analog or digital components. There are no controls except
for the on-off switch. A digital meter indicates input voltage,
while another LED indicates "In Regulation" status
(i.e., that the output voltage is within ±5V of 120V). The
unit is housed in a compact, dual-space rack mount chassis,
3.5" high and 17.125" deep with rack ears
(14.125" deep without rack ears).
Series Multi-Stage Protection Plus (SMP+)
SMP+ is Furman's proprietary surge suppression and noise
filtration system. Designed over a period of two years by our
California based engineering team, SMP+ is composed of three
separate and distinct technologies which work together in a
precisely tuned circuit to filter or "clean" the
incoming power and to protect connected equipment from
potentially damaging AC events. These technologies are Linear
Filtering, Series Multi-Stage Protection, and Extreme Voltage
Shutdown.
Linear Filtering Technology (LiFT):
Unfortunately, traditional AC filter conditioners have been
designed for unrealistic laboratory conditions. Prior
technologies could actually harm audio and video performance more
than they help, due to the resonant peaking of their antiquated,
non-linear designs. Under certain conditions, these designs can
actually add more than 10 dB of noise to the incoming AC line!
Worse still, lost digital data, the need to re-boot digital
pre-sets, or destroyed digital converters are frequently caused
by excessive voltage spikes and AC noise contaminating the
equipment ground. Furman's LiFT takes another approach,
ensuring optimal performance through linear filtering and no
leakage to ground.
Series Multi-Stage Protection (SMP):
Traditional surge suppression relies on circuits that
"sacrifice" themselves when exposed to multiple
transient voltage spikes, requiring the dismantling of your
system and repair of your surge suppressor. With Furman's
SMP+, however, damaging transient voltages are safely absorbed,
clamped and dissipated. No sacrificed parts, no service calls, no
downtime. Also unique to Furman's SMP+ is its unparalleled
clamping voltage. While other designs offer clamping voltages
that are well above 300Vpk, Furman's SMP+ clamps at 188Vpk,
133 VAC RMS, even when tested with multiple 6000Vpk - 3000 amp
surges! This unprecedented level of protection is only available
with Furman's SMP+ technology.
Extreme Voltage Shutdown (E.V.S.):
When voltage rises to extreme levels because of a lost neutral
line or an accidental connection to 208 or 240 VAC,
Furman's Extreme Voltage Shutdown kicks in, automatically
powering down all equipment quickly and safely in order to
prevent damage from occurring. An indicator LED will then
illuminate, alerting you to the situation until the over voltage
condition is corrected.
Features:
- Precise Voltage Regulation delivers a consistent, stable 120
Volts output to safely power connected equipment and optimize
performance regardless of fluctuations in the input level
- Series Multi-Stage Protection Plus (SMP+) for virtually
maintenance free protection from surges and spikes. No sacrificed
parts, no service calls, no downtime!
- Furman's unequaled Linear Filtering Technology (LiFT)
rids systems of AC line noise for consistent audio/video
clarity
- Automatic Extreme Voltage Shutdown (E.V.S.) powers down
equipment during a prolonged or extreme over-voltage
- Ultra-low noise torodial autoformer assures no mechanical
noise or hum-inducing magnetic field
- Fourteen AC outlets with two bi-directionally filtered banks
to isolate digital and analog components
- Output capacity 20 amps
Specifications:
Current rating:
The AR-20 is capable of 20 amps for input voltages of 124V (104V
in 100V mode) or higher; derate at 113 mA per volt to a minimum
of 12.3A
Spike Protection Modes:
Line to neutral, zero ground leakage
Spike Clamping Voltage:
188Vpk @ 3,000 amps, 133 VAC RMS (tested to UL-1449 6,000 Vpk @
3,000 amps)
Response time:
1 nanosecond
Maximum surge current:
6,500 amps
Voltmeter Accuracy:
+/ - 1V
Shutdown Range:
Above 145-150V (typically)
"In Regulation" Ranges:
Provides regulation +/- 5V 120V from 97 to 141V
Noise Attenuation
10 dB at 10 kHz
40 dB @ 100kHz
100 dB @ 10MHz
Mechanical: Dimensions:
Dimensions: 3.25" H x 19" W x 17.125" D.
Weight:
36 lbs.
Three Year Limited Warranty:
The AR-20 is protected by a limited three year warranty covering
defects in material and workmanship.
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