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Microcomputer-Controlled High-Frequency Switching Dc Power Supply Cabinet

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Widely applied in power plant, power distribution station, and some places where direct current power source is needed, such as: oil, chemical industry, mine, steel, and electrizational railway. Providing highquality electricity for the automatic control, momentum, instruments and meters, signals, communication, accident light and other equipments from the places mentioned above. Operation Conditions:
*Atmospheric pressure76~105Kpa
*Located indoor, with good aeration and ambient temperature -5℃~+50℃
*Relative humidity not above 90%
*Operating site without fierce vibration and impulsion
*Without deleterious gas eroding metal and destroying insulation, without heavy dust, serious mildew, conducting particle and explosive perilous medium, and without strong interference of electromagnetic field. *Ambient temperature change rate must be below 5℃/h, relative humidity change rate per hour must be below 5%
8AC input frequency fluctuate range must be below±10%。 AC input voltage range is 380V ±20%.
Technical Parameters:
AC input voltage/frequency

380V±20%, 50Hz±10
DC nominal voltage

DC output volume

Current adjusted range

0%-100%(can be adjusted continuously)
Voltage regulation accuracy

Current regulation accuracy

Ripple voltage


≥94%(rated output or input)
Dynamic response


≤50 Db(1 m away from the box)
Power factor

≥0.93 (rated output or input)
Average no-failure time

Power source module life

20 years
Operating temperature range

Flow equalization unbalance degree



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