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www.nationalrailwaysupply.com 
1-800-357-3572 

38933C 

 

 

 

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” (18.312) 

(465.1mm).    The  mounting  flanges  are 
configured  for  an  EIA  19”  (483mm)  rack 
for  a  forward  mounting  arrangement 
(note:  the  width  from  the  outer  edge  of 
one mounting flange to the outer edge of 
the  other  mounting  flange  is  19-

15/16”).  

Fasteners to match the thread of the rack 
should  be  used  in  all  7  rack  mounting 
horizontal  slots  on  each  of  the  2 
mounting flanges (14 rack mounting slots 
total)  to maximize  the mounting integrity.  
The  fasteners  should  be  torqued  to  22 
inch-pounds.    The  dimensions  and 
pattern  of  the  mounting  flange  rack 
mounting  slots  is  shown  in  figures  4.2 
and 4.3 

 

 

Figure 4.3 

 

Summary of Contents for ELC 12/40D

Page 1: ... 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 Only qualified personnel sho...

Page 2: ... or the temperature probe is working improperly Temperature compensation uses a temperature reference of 77 F 25 C a voltage reference of 2 23 volts the voltage of a standard gel cell battery at 77 F and a compensation value of 3 0 mV per F The equivalent equation for the compensated voltage is Vcomp V k t 77 F Where V is the voltage of the battery at 77 F t is the temperature in F and k V 003 2 2...

Page 3: ...g flanges are configured for an EIA 19 483mm rack for a forward mounting arrangement note the width from the outer edge of one mounting flange to the outer edge of the other mounting flange is 19 15 16 Fasteners to match the thread of the rack should be used in all 7 rack mounting horizontal slots on each of the 2 mounting flanges 14 rack mounting slots total to maximize the mounting integrity The...

Page 4: ...TOR 7 TEMPERATURE PROBE The external temperature probe is an optional way of extending battery life by using temperature compensation One end of the temperature probe cable has a three pin plug which plugs into a receptacle labeled TEMP PROBE on the front of the charger The other end of the cable has the temperature sensor sealed in a terminal WARNING IT IS IMPORTANT TO MOUNT THE TEMPERATURE PROBE...

Page 5: ... Wiring The OPEN COMMON and CLOSED relay contacts have push in type terminals for remote wiring The relay contacts are rated for 1A at 30 Vdc or 0 5A at 120 Vac A small screwdriver 3 32 inch maximum blade width is required to insert or remove a wire from a relay terminal WARNING BE CAREFUL IF AN UNINSULATED METAL TOOL CONTACTS BOTH THE GROUNDED CHARGER CASE AND A RELAY TERMINAL PUSH IN TAB THIS WI...

Page 6: ...it in that position If the LED is off and the CLOSED relay contact is open when the low current set point adjustment is turned fully clockwise turn it slowly counterclockwise until the LED turns on and the CLOSED relay contact closes Turn the low current set point adjustment approximately 1 8 of a turn counterclockwise from this switching point Remove AC power from the charger to verify that the c...

Page 7: ... small screwdriver to turn the switch so that the arrowhead on the slot is pointing to the desired number BE SURE EACH SWITCH IS SET ON A NUMBER AND NOT BETWEEN NUMBERS If a switch is set between numbers the corresponding LED will flash and the voltage monitor alarm will not function as intended Voltage Monitor Battery Sense Input Optional The voltage monitor alarm includes an optional VOLTAGE MON...

Page 8: ...it in to reset it if necessary e Check the polarity between DC output and the battery and make sure their connections are tight f Remove the small cover on the front of the charger and make sure all of the binding posts nuts are tight g If the steps above do not solve the problem contact your local NRS service agent at 1 800 357 3572 13 CHARGER SPECIFICATIONS AC INPUT VOLTAGE 115 Vac 108 128 or 23...

Page 9: ... 38924S 1 CIRCUIT BREAKER ASSEMBLY 31457S 1 AC SWITCH ASSEMBLY 27319S 1 AMMETER 50 AMP 14197S 4 BUSHING 1 29741S 1 TEMPERATURE TRANSDUCER 10 W TERMINAL 29742S 1 TEMPERATURE TRANSDUCER 30 W TERMINAL 14742S 1 HEATSINK ASSEMBLY W SCR 9 WIRE 15194S 1 HEATSINK ASSEMBLY W SCR 21 WIRE 23074S 1 SCR ASSEMBLY 50 AMP 21 WIRE 23073S 1 SCR ASSEMBLY 50 AMP 9 WIRE 32199S 1 OUTPUT CAPACITOR C 40 000 UF 35V 32206S...

Page 10: ...www nationalrailwaysupply com 1 800 357 3572 10 38933C 15 WIRING DIAGRAM ...

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