Specifications

36
Model ES1948
Input
Voltage Wide Input Range: 90-275Vac or 310-480Vac
Frequency 44~66 Hz
Input Protection 13A HRC fuses at input of SMR(line and neutral);
power circuit is turned off if the AC voltage exceeds 275Vac or falls to less than 90Vac
Current <12A rms
Power Factor >0.99 at full load; sinusoidal wave shape
THD <5% at full load; satises requirements of EN61000-3-2
Efciency >91% at nominal mains voltage
Output
Voltage Float: -Adjustable 48~59V; Equalise: -Adjustable 50~61V
Current Limit Adjustable 5~40A
Power (Max) 1900W at 48~60Vdc(input>185Vac); 900W at 48~60Vdc(input 90~185Vac)
Load Sharing Better than ±5% of full scale with active current sharing from MCSU2048
Protection Overvoltage - only faulty unit shuts down
Overcurrent - can sustain short circuit at output terminals indenitely
Over-temperature - gradual reduction of current limit if heat-sink temperature exceeds pre-set limit
Static Regulation Line- +0.1%; Load- +1.0%
Dynamic Regulation +3% for 10~90% or 90~10% load variation; +1% for +25% step change in AC input voltage
Output Noise < 2mVrms Psophometric weighting; < 10mVrms 10kHz - 100MHz; < 100mV peak to peak 0~30MHz bandwidth
Other
Surge Protection EN 61000-4-5
EMC Emission: EN 61000-6-3,Immunity: EN61000-6-1
Inrush Current <12 Arms peak at nominal mains voltage
Voltage Withstand Test 3.0 kVac – input and output (4.25 kVdc primary-secondary); 1.5 kVac – input earth (2.12 kVdc
primary-ground); 0.75 kVdc – output earth
All information contained in this brochure is purely indicative and can not be used to form any contractual obligations.
Specication or design can be changed at anytime without prior notice.
Environmental
Audible Noise @ 1m < 65dBA
Operating Temperature Operating range -40
0
C ~ 70
0
C; derated power at 50
0
C ~ 70
0
C
Cooling Two fan cooled, speed controlled and alarmed
Humidity 0~95% non-condensing
Mechanical
Dimension (W x H x D) 41mm x 144mm x 287mm
Weight <1.9kgs(4.19lbs)
Alarms
Alarm & Status LED
indication on SMR
On (Green) - SMR functioning normally
Alarm (Yellow) - Blinking when any SMR alarm is present.
Shutdown (Red) - Stays on when SMR has turned off due to a signal from the
MCSU2048 or an internal fault
Rectier Alarms Low/High output voltage alarm; Over voltage shutdown alarm; Current limit alarm; Fan Alarm;
Temperature alarm; Rectier failure alarm
SWITCH MODE RECTIFIERS
1PHASE&3PHASE