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DC/DC Converters
All DC to DC voltage converters have been designed to meet the highest level of standards for reliability for use in transportation, marine, heavy equipment, mobile and other applications.
All cases are of high-impact heavy-duty construction.
Models are available to step down and stabilize DC volts, to run 12 or 24 volt electronics from 24 volt to 110 volt battery systems. |
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| Technical Data |
110 volt DC/28 volt DC Power supply |
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Input
Rated voltage:
Tolerance:
Polarity protection:
Transient portection:
Fuse:
Ripple current in input line:
Ripple and noise: |
Nom. 110 volt DC from battery.
+ 36% / - 68%
Reverse diode in TRANZORB.
TRANZORB in output line,
1.5KE51P / 1500W-1ms.
Input must be externally fuse protected.
Less than 1% of max. load.
Less than 1% mV p-p (measured by B&K 2425) |
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Output
Voltage:
Current:
Output tolerance +/- 2% against:
Overload protection:
Short-circuit protection:
Ripple/noise:
Wax. output at no load: |
28 volt DC.
17amp. DC.
Input change: ± 30%
Load change: 1%-100%
Temp. change: -20ºC. to +70ºC.
Constant current at approximate 120%
At short-circuit V-out, current max. 200% ADC.
Less than 1% mV p-p (measured by B&K 2425)
29 volt DC. |
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Low voltage lock-out:
Over voltage protection:
Ambient temperature / 100% load:
Storage temperature:
Coating:
Outside dimensions:
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At input lower than 34 volt converter will lock-out.
Converter restart at input >42 volt DC.
At output >33 volt DC TRANZORB will short-circuit.
(TRANZORB must be changed at factory)
-20ºC to +70ºC.
Converter will lock-out at heatsink >72ºC to 81ºC.
Converter will restart at approximate 60ºC.
-40ºC to +85ºC.
Converter coated with Fluorad FC721
Heatsink open frame: 75x125x200mm.
Case II: (Wiper-control) 144x165x215mm. |
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Vibration:
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The DC-DC converter operates satisfactory after
having passed the vibrationstest as described in
MIL-STD-810C, Method 514,2,procedure VIII,
Accelration level f.f. graph V. |
Heat/humidity test:
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The DC-DC converter should pass the test
mentioned in IEC 68-2 and be capable of operating
satisfactory all through the test. | |
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