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TURN OFF ALL POWER AND TURN OFF UMC'S INPUT & OUTPUT CIRCUIT BREAKERS (CB1 & CB2)
1. Move input jumpers on I/O panel to match the required input voltage. See connection chart on wiring diagram
inside enclosure.
2. Connect the input terminals (TB1-L1/L2) to available ac power.
3. See table/nameplate for input currents required.
4. If reduced input/output currents are required, adjust the Output Current Limit to minimum (counter-clockwise).
5. Connect cables to the dc bus or battery (properly rate wire size for the current required).
6. Select output voltage rating 130V, 48V or 24V using the Voltage Selector Switch on front panel.
7. Set Voltage Check switch to Charger Voltage (left position).
8. Turn on ac source and the ac input circuit breaker and adjust output voltage to desired set point. DO NOT
turn on the dc output circuit breaker at this point. Monitor the output voltage on the dc voltmeter, and adjust
the Output Voltage control slowly to the desired value. It may take several seconds for the output voltage to
settle to the desired voltage.
9. Set Voltage Check switch to Battery Voltage (right position). Check for proper polarity and voltage.
10. Turn on the dc output circuit breaker; current will be displayed on the ac and dc ammeters.
11. Increase Current Limit Adjustment clockwise to obtain the desired output current. Monitor the ac input current
on the ac ammeter in the lower right corner of the front panel. Do not allow the input current to exceed 66
Aac, as shown in the table below.
DC OUTPUT CURRENT
AC INPUT VOLTAGE
** Full output current at 120Vac input will cause the input current to exceed breaker rating.
IMPORTANT OPERATION NOTES
The battery charger's output voltage is capable of adjustment over 145Vdc. The output current limit needs to
be reduced when operating at levels above 145Vdc.
Adjust the Output Current Limit of 50A units to 40A.
Adjust the Output Current Limit of 25A units to 22A.
...!
WARNING...
WORKING WITH BATTERIES
Some reasons why someone would wish to overcharge a battery bank is when the battery's temperature is
very low, or the electrolyte has stratified. Once charging takes place the batteries may start to heat, or electrolyte
mixes and the batteries will start to show signs of gassing. The charger WILL need to be readjusted to a lower output
voltage to prevent damage to the batteries.
NEVER LEAVE BATTERIES UNATTENDED DURING THIS KIND OF CHARGING!
NEVER LET THE INTERNAL PLATES OF THE BATTERY TO BE EXPOSED TO AIR!
FOLLOW ALL RECOMMENDED PROCEDURES PROVIDED BY THE BATTERY MANUFACTURER!
Battery banks greater than 130V can be charged. Connect to a portion of the bank at a time and move to the next
portion until all the batteries are charged. This should only be done if there is no or little standing load while charging.
SPECIFICATIONS
REGULATION:
+ or - 0.5%
REGULATION:
+ or - 0.5%
REGULATION:
+ or - 1%
120-240Vac input protection
480Vac input protection
Ambient Temperature Range:
Relative Humidity:
Altitude:
QUICK STARTUP
120V
208V
240V
480V
INPUT CURRENT TABLE
no-load to full-load
for + or - 10% AC line variation
for combined load, line & temperature variations
5 kAIC
200 kAIC
0 ºC to 40 ºC
up to 95% without condensation
up to 1,000m above sea level
10A
20A
AC INPUT CURRENT
25A
48A
17A
24A
15A
22A
8A
15A
30A
55A
66A
**
44A
60A
35A
51A
17A
26A
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