24 V Dc Power Supply - Hitachi 902 Service Manual

15.1.2 24 V DC Power Supply

< Specifications >
(1) Type
(2) Input conditions
(a) Voltage
(b) Current
(c) Efficiency
(d) Rush current
(e) Frequency
(3) Output characteristics
(a) Rated voltage
(b) Maximum output current: 14 A
(c) Maximum output power : 336 W
(d) Input fluctuation
(e) Load fluctuation
(f) Voltage variable range : ±20%
(4) Protection circuit
(a) Overcurrent protection : Activated at 14.7 to 18.2 A, and auto resetting
(b) Overvoltage protection : Activated at 30.0 to 34.8 V
(5) Environment
(a) Operating temperature
and humidity
(b) Storage temperature
and humidity
(c) Vibration resistance
(d) Shock resistance
: EWS300-24
: 85 to 132 V AC or 170 to 265 V DC
: 7.0 A (100 V AC input, under full load),
3.5 A (200 V AC input, under full load)
: 82% (at maximum output power)
: 25 A (100 V AC input), 50 A (200 V AC input)
: 47 to 440 Hz
: 24 V
: 96 mV (maximum input to minimum input)
: 144 mV (no load to full load)
: 0 to 50°C, 30 to 90% RH (without condensation)
: -30 to 85°C, 10 to 95% RH (without condensation)
: 2 G or less (10 to 55 Hz, 2 G constant, in each of X, Y and
Z directions for 1 hour)
: 20 G or less
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