Installing the at30 – Exide Technologies Section 94.40 User Manual
Page 27

INSTALLING THE AT30
23
Note the following:
•
You should set the Float and Equalize voltages to the values 
recommended by your battery manufacturer for 77° F (25° C). 
•
When you enter the Edit mode to adjust the Float or Equalize voltage 
(see Section 2.3.2), the front panel meter shows the 77° F (25° C) value 
for the Float or Equalize voltage, even if the battery is warmer or cooler 
than 77° F (25° C). 
•
The actual output voltage of the AT30 may be different from the value 
shown on the front panel meter, if the battery is warmer or cooler than 
77° F (25° C). 
•
Use a digital meter to measure the actual output voltage of the AT30. If 
you know the temperature at the temperature compensation probe, you 
can use the graph below to determine that the output voltage is correct. 
•
If the battery temperature goes below 32° F (0° C), there will be no 
further increase in charger output voltage. Likewise, if the battery 
temperature goes above 122° F (50° C), there is no further decrease in 
output voltage. 
O U T P U T V O L T A G E V S B A T T E R Y T E M P E R A T U R E
9 4
9 6
9 8
1 0 0
1 0 2
1 0 4
1 0 6
1 0 8
2 0
4 0
6 0
8 0
1 0 0
1 2 0
Temperature, Degrees Fahrenheit
Percent Output Voltage
Lead-Acid
N i c k e l - C a d m i u m
E x a m p l e :
1 0 0 D e g . F
9 7 % O u t p u t
V o l t a g e
EXAMPLE: Suppose you have a lead-acid battery whose temperature is 
100° F / 37.8° C. As shown on the graph, the output voltage should be 
approximately 97% of the 77° F voltage. If the float voltage is set on the 
front panel to 132 Vdc, the actual output voltage will be: 
 
132 x 0.97 = 128 Vdc
1.12. INSTALLING FOR REMOTE COMMUNICATION (OPTIONAL)
Refer to separate
Operating Instructions (
JA0102-04
).
1.13. INSTALLING FOR FORCED LOAD SHARING (OPTIONAL)
Refer to Appendix F on page 92, or
Instructions (
JA5054-0
).
