NRS ELC-24/30-CVM-D Nstalling, Operating And Service Instructions

Battery charger

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MODEL ELC-24/30-CVM-D
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
SUPPLY

BATTERY CHARGER

DO NOT DISCARD THIS MANUAL AFTER READING.
hydrogen
gas
while
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
examined
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-CVM-D is a convection-cooled,
solid state, SCR regulated charger that provides
either a constant current or constant voltage output.
The 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
*38934*
Installing, Operating and
Service Instructions for the
ELC-24/30-CVM-D
Solid State Charger
IT MEANS:
all
AC
and
DC
Take it to a qualified service
by
a
NATIONAL
38934B
power
If
If the

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

  • Page 1: Battery Charger

    2. DESCRIPTION the area thoroughly with water. In the case The NATIONAL RAILWAY SUPPLY (NRS) charger of contact with the eyes, flush immediately model ELC-24/30-CVM-D is a convection-cooled, with clean water for 15 minutes and obtain solid state, SCR regulated charger that provides medical attention.
  • Page 2: Theory Of Operation

    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 by EIA-310 at 18-5/16”...
  • Page 4: Operation

    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 9.1 Figure 8.1 9. CURRENT MONITOR/ALARM Relay Terminal Remote Wiring The ELC-24/30-CVM-D battery charger includes an The OPEN, COMMON, and CLOSED relay contacts integrated current monitor/alarm that monitors the have push-in type terminals for remote wiring. The output current of the charger. If the charger output relay contacts are rated for 1A at 30 Vdc or 0.5A at...
  • Page 6: Relay Contact Ratings

    Low Current Set Point Adjustment 10. VOLTAGE MONITOR/ALARM The ELC-24/30-CVM-D battery charger includes an The low current set point adjustment should be set to integrated voltage monitor/alarm that monitors the a level that is below the charger output when DC voltage.
  • Page 7 bottom switch sets the tenths of volts. Both limits Relay Terminal Remote Wiring are settable between 07.8 and 51.3 volts. To set the switches, use a small screwdriver to turn the switch The OPEN, COMMON, and CLOSED relay contacts so that the arrowhead on the slot is pointing to the have push-in type terminals for remote wiring.
  • Page 8: Maintenance

    BE SURE THE CHASSIS IS AC INPUT CURRENT: SECURELY GROUNDED. If any problem cannot be 16.0 amps for 115 VAC (full power) resolved, consult the nearest NRS service agent at 1-800-357-3572. 7.5 amps for 230 VAC (full power) AC INPUT FREQUENCY: 12.
  • Page 9: Parts List

    14. PARTS LIST The following is a list of parts found in the NRS model ELC-24/30-CVM-D. When replacing a part, USE ONLY ORIGINAL FACTORY REPLACEMENT PARTS of the correct size and rating. PART NO. QTY. DESCRIPTION 39047S CASE ASSEMBLY MODEL 27930...
  • Page 10: Wiring Diagram

    15. WIRING DIAGRAM www.nationalrailwaysupply.com 1-800-357-3572 38934B...

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