Cadex C4000 SERIES, User Manual

Page: 108 / 152

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7. Capacity Offset
When to use it
C-Code Tables
The Capacity Offset corrects the capacity readings
when discharging the battery at a higher or lower rate
than specified by the battery manufacturer.
Negative Capacity Offset
CODE CODE CODE CODE
CODE
0%
.
50
-10% 40
-20% 30 -30% 20 -40% 10
-1% 49
-11% 39 -210/0 29 -310/0 19
.41 % 09
-2% 48 -12% 38
-22% 28 -32% 18 -42% 08
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:h1it'#:m::~!:m:::
:mt'A$.\?~!f:
j:g«tf4ifffi M'~4t:::~~Jm
#f4fit::g~fi::::~~::::::!~fr
::::::;if$.:::::::ij::t:!:::::::
M'l%r~,::r rf.~4'i:::~4:::r
H~::::4J.r{
-7% 43 -17%
33
.27%
23 -37% 13 -47% 03
-8% 42 -18%
32 -28% 22 -38% 12 -48% 02
-9% 41 -19% 31 .29%
21 -39% 11 -49% 01
Table 11.7a "Default
Positive Capacity Offset
CODE
CODE CODE CODE CODE
0%
.
50 +10% 60 +20%
70 +30% 80 +40% 90
+1% 51
+11% 61
+21% 71 +310/0 81 +41% 91
+2% 52 +12% 62 +22% 72
+32% 82 +42% 92
1&1')
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11111Ii
ll:II:I:1
1
III/II.!!:!:;.:!!
IIi
ft!~:m!!:::
::$UJflff:~:m
!1::¥fl:!.:=: ..1
::f~~r:~::r::(it1~r~r
t~%%~::
(t¥":#r.'~~r
+7% 57 +17% 67 +27%
n
+37% 87 +47% 97
+8% 58 +18% 68 +28%
78 +38% 88 +48% 98
+9%
59 +19% 69 +29% 79 +39%
89 +490/0 99
Table 11.7b "Default
The SLA battery is commonly rated at a 20-hour
discharge. Faster discharge rates lower the capacity
readings.
Since it is not practical to use a 20-hour rate when
analyzing a battery, a faster discharge rate is applied.
The derived capacity, which will be lower than specified,
can mathematically
be corrected with the capacity
offset.
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