MI 3205 TeraOhm XA 5kV
Safety and operational considerations
10
Typical charging time is 4 hours in the temperature range of 5°C to 60°C.
T
LTF
T
C
OOL
T
WA
R
M
T
HT
F
Curr
ent
Figure 2.6: Typical charging current vs temperature profile
where:
T
LTF
................................. Cold temperature threshold (typ. -15°C)
T
COOL
.............................. Cool temperature threshold (typ. 0°C)
T
WARM
............................. Warm temperature threshold (typ. +60°C)
T
HTF
................................ Hot temperature threshold (typ. +75°C)
The charger continuously monitors battery temperature. To initiate a charge cycle, the
battery temperature must be within the T
LTF
to T
HTF
thresholds. If battery temperature is
outside of this range, the controller suspends charge and waits until the battery
temperature is within the T
LTF
to T
HTF
range.
If the battery temperature is between the T
LTF
and T
COOL
thresholds or between the
T
WARM
and T
HTW
thresholds, charge is automatically reduced to I
CH/8
(1/8 of the charging
current).
