Output Specifications
Parameter
Conditions
Min
Typ
Max
Units
Voltage Adjustment Range
float voltage
equalize voltage
48
52
56
60
VDC
VDC
Regulation
0-100% load within
specified input voltage and frequency range
within a 10 - 100% rating
nominal AC line
.5
%
%
Load Current
Hold-UpTime
Filtering
10
>16
mS
Voice band
<32
dBrnc
Wide band noise
@ 20 MHz
<250
mV p-p
ENVIRONMENTAL
Temperature
Operating
-40
-40
-50
-58
0
+65
149
+85
185
95
°C
°F
Storage
°C
°F
Humidity
Altitude
non-condensing
%
0
7000
2133
ft.
0
m
Heat Dissipation
Audible Noise
@54V
264
Btu/hr
dBa
5 ft. from any vertical surface
<55
PROTECTION, ALARM AND CONTROL SYSTEMS
Rectifier Failure Alarm (RFA)
High Voltage Shutdown (HVSD)
Problems occurring because of an unacceptable relation-
ship between the output power and load conditions will
cause a Rectifier Failure Alarm (RFA).This alarm consists
of a red LED and a flashing green OK LED. Conditions
which may lead to an RFA are:
The unit’s built-in high voltage limit is permanently set at
60V. When internal shutdown occurs, the unit may be
restarted by a local switch or by a remote signal.
Surge Protection
Low Current - Output current has decreased to below
5% of its rated value.
The unit will withstand lightning and input surges of
6000V/3000A.
Unit Shutdown - Any shutdown occurrence due to
overvoltage, external shutdown command, unacceptable
ambient temperature conditions or low AC input voltage.
Load Sharing Terminal Pin Out Of Range - The
terminal pin is out of range.
Under Voltage Protection
When input voltage is below 105 VAC, the rectifier’s
operation is automatically power limited.
Remote ControlTerminal Out Of Range - The remote
control terminal pins are out of range.
Line Sag - This condition occurs when the nominal
voltage decreases below 180V. Normal range is 208-
240V.
Fan Malfunction - The fan has stopped operating or is
not providing the airflow needed to cool the unit.
Over Temperature - The ambient temperature has
exceeded 65°C.
RM4875 4/98 REV A
Page 3
