INSTALLATION, OPERATING AND TROUBLESHOOTING INSTRUCTIONS FOR MODEL A75D / A75DE –
THREE PHASE
Page 8 of 20
SPECIFICATIONS
ELECTRICAL
AC Input
Voltage range +10% / -12%
Frequency Range 60Hz +/- 5%
DC Output
6 to 500 amps
24 or 48 or 130Vdc
Output Filtering
A75D NO FILTERING
A75DE - 100mv RMS, with or without battery connected, for a three phase unit
Regulation
+/- 0.5% from no load to full load over the specified input voltage, frequency and ambient temperature
range.
Audible Noise
Less than 65dBA at any point 5 feet from any vertical surface of the battery charger.
Load Sharing
The Load sharing terminal is located inside the unit. When connected, identical LaMarche units are forced
to load share. Connect the LS terminals together. When load sharing is used, the chargers must switch
into equalize at the same time. If option 57R is used the RE terminals of all chargers can be connected
together to ensure all chargers automatically switch into (and out of) equalize mode together.
PROTECTION
Current Walk-In
The output current gradually increases after the charger is turned on, eliminating surges and overshoot.
Current Limit
Electronic current limiting control circuitry provides for an adjustable current limit of 50 to 110% output
current. It is factory set at 105%.
AC Breaker
AC breaker is standard equipment.
DC Breaker
DC breaker is standard equipment.
INDICATORS
On the LCD Digital display the DC Voltage and Amps are displayed. The timer mode and time remaining
are also displayed. There is also a Red Alarm indicator, when this Led is lit, the type of alarm will
indicate on the digital display and the correct Led listed below will indicate.
Led Indications for:
Float – Green
Summary - Red
Equalize – Yellow
Positive and Negative Ground - Red
AC “ON” – Green
AC Failure – Red
High DC Voltage – Red
Low Voltage / End of Discharge – Red
High DC Voltage Shutdown – Red
Low DC Current – Red
