RM4850 Просмотр технического описания (PDF) - C AND D TECHNOLOGIES
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RM4850 Datasheet PDF : 4 Pages
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Output Specifications
Parameter
Voltage Adjustment Range
Regulation
Load Current
Hold-Up Time
Filtering
Voice band
Wide band noise
ENVIRONMENTAL
Temperature
Operating
Storage
Humidity
Altitude
Heat Dissipation
Audible Noise
Conditions
Min
float voltage
48
equalize voltage
48
0-100% load within
specified input voltage and frequency range
within a 10 - 100% rating
nominal AC line
>16
@20 MHz
< 32
< 250
-40
-40
-50
-58
non-condensing
0
0
0
@54V
5 ft. from any vertical surface
<55
Typ
± 0.5
±10
1025
Max
60
60
+65
149
+85
185
95
7000
2133
Units
VDC
VDC
%
%
mS
dBrnc
mV p-p
°C
°F
°C
°F
%
ft.
m
Btu/hr
dBa
PROTECTION, ALARM AND CONTROL SYSTEMS
Rectifier Failure Alarm (RFA)
Problems occurring because of an unacceptable relation-
ship between the output power and load conditions will
cause a Rectifier Failure Alarm (RFA). Conditions which
may lead to an RFA include:
Low Current - Output current has decreased to below
5% of its rated value.
Unit Shutdown - Any shutdown occurrence due to
overvoltage, external shutdown command, unacceptable
ambient temperature conditions or out of bounds AC input
voltage.
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.
High Voltage Shutdown (HVSD)
The unit’s high voltage limit is adjustable up to 60VDC.
Shutdown occurs while voltage is high and the rectifier is
delivering greater than 10% rated current. When internal
shutdown occurs, the unit may be restarted by a local
switch or by a remote signal.
Surge Protection
The unit will withstand lightning and input surges of
6000V/3000A.
Under Voltage Protection
When input voltage is below 176 VAC, the rectifier’s
operation is automatically inhibited.
RM4850 4/98 REV A
Page 3
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