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DC-DC CONVERTERS
RACKMOUNT SERIES
48VDC - 12VDC 30Amp
400Watt
48VDC - 24VDC 15Amp
400Watt
24VDC - 12VDC 30Amp
400Watt
POSITIVE NEGATIVE
or FLOATING GROUNDS
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Communication sites require isolated DC
Converters to provide excellent voltage regulation, low noise, and high
efficiency voltage conversion. Reliability is vital under continuous duty
operation and high ambient temperatures. All these aspects were incorporated in
the design of our rack-mount DC Converters.
These units accept a wide input range at 24 or 48VDC nominal, positive or
negative ground, and produce pure 12 or 24 volt power. The solid state circuitry
is conservatively designed and semi-conductors are selected and tested to
withstand 200% of normal operating power.
Output voltage is maintained within 1% for all line and load conditions and the
output is well filtered, allowing use with sensitive transceivers and telecom
equipment.
Features
• 48, 24 volt inputs; 12, 24
volt outputs; positive, negative or floating ground.
• Input/Output chassis isolation – 250VDC
• 400 watt output
• Rated for continuous duty at full load.
• Excellent regulation under all line/load conditions.
• Low ripple provides noise free output.
• High efficiency – 87% typical.
• Easily adapts to both 19" and 23" racks, centre mount (6" from front)
• Output volt and ammeter
• Output voltage adjustment on front panel
• Low profile – occupies two RU (one RU space above and below recommended for
cooling)
Specifications
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DC-DC Converters
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Input
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Voltage
(VDC)
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Output
Adjustment
Range
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Amperage
(continuous)
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Weight
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Voltage
(VDC)
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Max
Amps
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Lbs
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Kg.
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48-12-30RM
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40-60
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12
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13.6
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12.6-14.5
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30
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10
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4.6
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48-24-15RM
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40-60
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12
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27.2
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25.2-29.0
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15
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10
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4.6
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24-12-30RM
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20–30
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24
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13.6
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12.6-14.5
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30
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10
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4.6
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Performance
•
Regulation: 1% line/load
• Ripple: +/– 1/2% peak-peak max.
• Idle Current: 48V: <100 mA, 24V: 300 mA
• Efficiency: 85% typical @ 50% load.
• Operating Temperature: -20 to 50° C; Derate linearly from 100% @ 50° C
to 50% @ 70° C
• Isolation: 250 volts input-out put-chassis.
Rear
View
Mechanical
• Powder coated aluminum front
panel, vinyl coated aluminum case.
• Mounting brackets provided for 19" or 23" Rackmount, centre or front.
• Easy access terminal blocks on back of unit, with protective cover
• Front panel switch guard provided.
• Output voltage adjustment potentiometer recessed in front panel
Protection
• Input and
Output circuit breaker.
• Current limited/short circuit proof.
• High/low input voltage shutdown
• Fail-safe components guard against output over-voltage condition.
• Automatic high temperature power reduction starting at 65° C heat sink temp.
• Automatic thermal shut down and recovery @ 80° C heat sink temp. (automatic
reset @ 55° C heat sink temp.).
• Reverse polarity protection.
Options
• Operation as
battery charger and /or parallel redundant operation. (Heat sink mounted oring
diode installed in series with the output)
• Output Failure Alarm Contacts; Form C
• Current protection recommended on charging leads
Case Size R-1
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Inches
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Centimeters
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H
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W
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D
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H
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W
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D
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3.5
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19/23
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14
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8.9
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48.3/58.4
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35.6
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Download PDF Data Sheet
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