BATTERY CHARGER USER’S MANUAL PART-1:INSTALLATION
MCEnPC23-REV.2.4 Page 4
6. ELECTRICAL CONNECTIONS AND WIRING
Before connecting the battery charger ensure that:
The battery is disconnected (if applicable)
The circuit breakers are OFF
The relays, fuses and circuit boards are installed
The unit is wired in accordance with the instructions (refer to the wiring connections and electrical diagram)
The appropriate cable sizes are very important. The nameplate provides the essential information regarding the input and output
voltages and currents.
Use a branch feeder (circuit breaker or fused disconnect switch), sized to the maximum input current.
Refer to your Local or National Electrical Code for LOCKOUT, WIRE GAUGE and GROUNDING instructions.
The ampacity of the power cables must be sized to the maximal correspondent current.
Correct voltage and polarity are of critical importance. Check all connections for tightness and polarity. Connect battery (if
applicable to the output terminals observing its polarity.
7. POWERING UP
After the installation of all wires is completed and has been double checked, the unit may be powered up as follow:
Before connecting a load to a charger, compare the critical characteristics of the load against those of the
charger (i.e. measure ripple, line-neutral voltage, positive-neutral voltage).
Keep a log of the values entered for V
FLOAT
and V
EQUALIZE
values entered, alarm messages, alarm and SCR
blinking LEDs, etc.
All input and output breakers must be in ”OFF” position
Apply power to the equipment from a source
Turn on AC breaker (if supplied) (”ON” position)
Wait 30 seconds
Turn on DC breaker (if supplied) (”ON” position)
Green LED must light up
Wait 5 seconds until the LCD display will show the system’s output voltage and status
The system soft starts by rising the output current and the voltage
If an adjustment or calibration of the unit is necessary, refer to the field programming section for more information.
8. SYSTEM POWERING OFF PROCEDURE
Open the DC breaker (if supplied) (OFF position);
Open the source panel’s AC breaker (if supplied) (OFF position);
Open the AC breaker feeding the powering the battery charger from external distribution panel;
If work inside a unit has to be performed, wait 5 minutes to let the filter capacitors to discharge or use
bleeding resistors of the correct rating to discharge the capacitors;
After following all previous steps, the battery charger can be considered de-energized.
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