©2000 Xantrex Technology Inc.
Battery Temperature Compensation
The optional plug-in external Battery Temperature Sensor (BTS)
automatically fine tunes the charging process of the C-Series. The BTS is
required by UL Standard 1741 and UL approval is based on its installation.
However, do not install the battery temperature sensor if you are using the
C-Series as a DC load controller. The BTS may be extended by using a
standard phone cable with RJ-11 plugs.
If the temperature sensor is installed, the regulation setpoints should be
adjusted for a battery at room temperature (2327 °C/7480 °F). The C-Series
adjusts the BULK and FLOAT setpoints 30 mV per degree Celsius for a 6-cell,
lead-acid type battery and 20 mV per degree Celsius for a 10-cell, NiCad type
battery, as required per UL Standard 1741. For 24 and 48 volt systems, the
compensation is twice and four times the values listed respectively. See Table 1.
If the temperature sensor is NOT installed, the setpoints should be adjusted
for the temperature of the battery during operation. Seasonal adjustment of the
setpoints may be necessary to prevent battery damage and to ensure proper
charging. If the battery temperature sensor is installed, no seasonal adjustments
are required (see Temperature Compensation in this manual).
If the wiring to the sensor is damaged and the wires are shorted or cut, the
system will return to the non-temperature compensated settings.
Install the BTS on the side of the battery below the electrolyte level. It is
best to place the sensor between batteries and place the batteries in an insulated
box to reduce the influence of the ambient temperature outside the battery
enclosure. Ventilate the battery box at the highest point to prevent hydrogen
accumulation.
2.0 FEATURES
6
Table 1
Charger Setpoint Temperature Compensation
T
R
A
H
C
N
O
I
T
A
S
N
E
P
M
O
C
E
R
U
T
A
R
E
P
M
E
T
T
N
I
O
P
T
E
S
R
E
G
R
A
H
C
e
p
y
T
y
r
e
t
t
a
B
e
g
a
t
l
o
V
m
e
t
s
y
S
C
D
V
2
1
C
D
V
4
2
C
D
V
8
4
d
i
c
A
d
a
e
L
C
°
/
s
t
l
o
v
0
3
0
.
0
C
°
/
s
t
l
o
v
0
6
0
.
0
C
°
/
s
t
l
o
v
0
2
1
.
0
d
a
C
i
N
C
°
/
s
t
l
o
v
0
2
0
.
0
C
°
/
s
t
l
o
v
0
4
0
.
0
C
°
/
s
t
l
o
v
0
8
0
.
0
Содержание Trace C35
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