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National Railway Supply NRS-24 Installing, Operating And Service Instructions

Solid state charger

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MODEL NRS-24/30 BATTERY CHARGER
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 hydrogen gas while
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
DO NOT DISCARD THIS MANUAL AFTER READING.
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 24/30 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 39.9 volts for gel-cell, liquid
lead-acid, nickel cadmium, nickel iron, and starved
electrolytic batteries.
1
*01546*
Installing, Operating and
Service Instructions for the
NRS-24/30 Solid State Charger
IT MEANS:
all
AC
and
DC
Take it to a qualified service
by
a
NATIONAL
01546G
power
If
If the
The

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Summary of Contents for National Railway Supply NRS-24

  • Page 1 2. DESCRIPTION the area thoroughly with water. In the case The NATIONAL RAILWAY SUPPLY (NRS) charger of contact with the eyes, flush immediately model 24/30 is a convection-cooled, solid state, with clean water for 15 minutes and obtain SCR regulated charger that provides either a 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 diagram showing the proper jumper connections for Configure the jumpers for your AC voltage source the different AC voltages. (refer to the jumper diagram). Place the AC ring terminals on the binding posts and tighten the post nuts. WARNING: IMPROPER JUMPER CONNECTION MAY CAUSE SEVERE DAMAGE TO THE CHARGER AND THE BATTERY.
  • Page 4: Operation

    battery about three inches (3") down from the top of The charger does not have a power switch. When the battery. Make sure the spot is free of all dirt and the AC power is applied to the charger, the DC oil or the probe will not adhere properly.
  • Page 5 MDA 12 or equivalent 1.4V p-p at 30.0 amps, 24.0 volts POWER FACTOR: 0.28V p-p at 2.0 amps, 26.8 volts Percentage at 30.0 amps DC current TEMPERATURE COMPENSATION: 3+25mV per °F per cell 91% for 18 cells 71% for 12 cells WEIGHT, NET: DC OUTPUT: 58.0 lbs.
  • Page 6: Wiring Diagram

    13. WIRING DIAGRAM SHUNT AC FUSE LINE +BATTERY -BATTERY CIRCUIT BREAKER LINE J1-1 J1-7 AC FUSE J1-9 115V ELECTRONIC JUMPER CONTROL J1-8 SETTING MODULE SHOWN J1-10 J1-11 J1-3 REMOTE J1-6 J1-12 TEMPERATURE J1-4 PROBE J1-5 J1-1 BLACK -BATTERY J1-2 NOT USED CONNECTOR J1-3 TMP PROBE (-)

This manual is also suitable for:

Nrs-30