NRS ELC-24/30-M-D Installing, Operating And Service Instructions

Solid state charger

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PLEASE SAVE THESE IMPORTANT SAFETY AND OPERATING INSTRUCTIONS
For correct operation of the equipment, it is important to read and be familiar
with this entire manual before installing and operating the charger.
LOOK FOR THIS SYMBOL TO POINT OUT SAFETY PRECAUTIONS.
BECOME ALERT—YOUR SAFETY IS INVOLVED. IF YOU DO NOT FOLLOW THESE
SAFETY INSTRUCTIONS, INJURY OR PROPERTY DAMAGE CAN OCCUR.

1. IMPORTANT SAFETY INSTRUCTIONS

a. Before using the battery charger, read all the
instructions and caution markings on the
battery charger, the battery, and all of the
products using the battery.
b. Do not touch the uninsulated parts of the AC
input or the DC wires, the charger's binding
posts, or the battery terminals as there is a
possibility of electrical shock.
c. Batteries
produce
operating, which can explode if ignited.
Never smoke, use an open flame, or create
sparks in the vicinity of the battery. Ventilate
the area well when the battery is charging in
an enclosed area.
d. Batteries contain caustic material which may
cause burns. Do not get in eyes, on skin, or
clothing. If the gelled or liquid content of the
batteries contacts the skin or clothing, wash
the area thoroughly with water. In the case
of contact with the eyes, flush immediately
with clean water for 15 minutes and obtain
medical attention.
e. Connect or disconnect the battery plug only
when the charger output is off to prevent
arcing or burning.
f.
Only qualified personnel should program or
service this equipment.
www.nationalrailwaysupply.com
1-800-357-3572
NATIONAL
RAILWAY
MODEL ELC-24/30-M-D
BATTERY CHARGER
DO NOT DISCARD THIS MANUAL AFTER READING.
hydrogen
gas
while
SUPPLY
g. De-energize
connections before servicing this unit.
injury does occur, apply standard treatment
for electrical shock and, if necessary, consult
with a physician.
h. The charger is not for outdoor use. Do not
expose the charger to rain or snow.
i.
Do not operate the charger if it has received
a sharp blow, been dropped, or otherwise
damaged.
center.
j.
Do not disassemble the charger. Have the
charger
RAILWAY SUPPLY service agent.
charger is assembled incorrectly, damage to
the charger and the batteries or an electrical
shock may result.

2. DESCRIPTION

The NATIONAL RAILWAY SUPPLY (NRS) charger
model ELC-24/30-M-D is a convection-cooled, solid
state, SCR regulated charger that provides either a
constant current or constant voltage output.
charger can be set to charge batteries within a
voltage range of 20.0 to 35.0 volts for gel-cell, liquid
lead-acid, nickel cadmium, nickel iron, and starved
electrolytic batteries.
1
Installing, Operating and
Service Instructions for the
ELC-24/30-M-D Solid State Charger
IT MEANS:
all
AC
and
DC
Take it to a qualified service
examined
by
a
NATIONAL
power
If
If the
The
38542D

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Summary of Contents for NRS ELC-24/30-M-D

  • Page 1 In the case The NATIONAL RAILWAY SUPPLY (NRS) charger of contact with the eyes, flush immediately model ELC-24/30-M-D is a convection-cooled, solid with clean water for 15 minutes and obtain state, SCR regulated charger that provides either a medical attention.
  • Page 2 3. THEORY OF OPERATION control module temperature compensation range between 32°F and 95°F (0°C When the charger is connected to the desired AC and 35°C) that does not allow charger voltage to voltage source (115 or 230), the transformer creates increase or decrease beyond the calculated values.
  • Page 3 Figure 4.1 Figure 4.2 Rack Mounting The charger can be mounted to a standard Electronic Industries Association (EIA) 19” (483mm) rack system using the fasteners provided by the rack manufacturer. The horizontal spacing of the vertical rows of holes is specified EIA-310 18-5/16”...
  • Page 4 5. AC ELECTRICAL SUPPLY 7. TEMPERATURE PROBE The charger must be connected to a single-phase, The external temperature probe is an optional way of 50/60 Hertz AC power source, which can be either extending battery life using temperature 115 or 230 VAC depending on the charger input compensation.
  • Page 5 Figure 8.1 Figure 9.1 9. CURRENT MONITOR/ALARM Relay Terminal Remote Wiring The ELC-24/30-M-D battery charger includes an integrated current monitor/alarm that monitors the The OPEN, COMMON, and CLOSED relay contacts output current of the charger. If the charger output have push-in type terminals for remote wiring. The falls below the current limit setting, a green LED relay contacts are rated for 1A at 30 Vdc or 0.5A at...
  • Page 6 BE SURE THE CHASSIS IS minimum DC load of the system and floating the fully SECURELY GROUNDED. If any problem cannot be charged battery set. The current limit adjustment is resolved, consult the nearest NRS service agent at factory-set approximately (fully 1-800-357-3572.
  • Page 7 TEMPERATURE COMPENSATION: 3mV per F per cell 13. PARTS LIST The following is a list of parts found in the NRS Model ELC-24/30-M-D. When replacing a part, USE ONLY ORIGINAL FACTORY REPLACEMENT PARTS of the correct size and rating. PART NO.
  • Page 8 14. WIRING DIAGRAM www.nationalrailwaysupply.com 1-800-357-3572 38542D...

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