9
Under-temperature in Charge
Protection
(d)
Cell temperature below 0°C (32°F) for 5 seconds and charge
current detected
Recovery
(d)
Recovery after 120 seconds and cell temperature 2°C (32°F) or
higher. Note: Discharge is available to -20°C (-4°F).
Load Qualification Protection
Protection
Mixed System Voltage, Short Circuit, Reverse Polarity, Input
Capacitance Overload
Recovery
Re-qualify after 120 seconds. After ten failed attempts to
qualify, the battery module switches OFF.
(a)
Overvoltage protection monitors individual cell voltages. Protection is triggered when any cell is over 3.65 VPC
and recovers when all cells are below 3.45 VPC for 120 seconds. Voltages are provided for guidance only.
(b)
Undervoltage protection monitors the voltage of individual cells. Protection is triggered, and the battery module
is set to OFF when any cell is at or below 2.5 VPC. Manually set the battery module ON to recover. Voltages are
provided for guidance only.
(c)
For time versus current interrupt details, see Figure 2, Over-Discharge Protection Time Current Curve.
(d)
Specifies the temperature of the cells and not the ambient temperature. Ambient temperature and cell
temperature may not be the same.
0.001
0.01
0.1
1
10
100
1000
10000
100000
- 100 200 300 400 500 600 700
Interrupt Time [s]
Over -Current Curve
Dual 100 A Fuse = 48V
Figure 2. Over-Discharge Protection Time Curve
3.4.1 Breaker Delay Specifications
Table 3-5, Breaker Delay
Rating [%] Current Delay Time [s]
100 100 A Breaker should not trip
100-135 100 - 135 A Breaker may trip
(1)
135 135 A 2.0 - 60.0
150 150 A 1.2 - 40.0
200 200 A 0.6 - 20.0
400 400 A 0.3 - 3.0
600 600 A 0.15 - 1.3
(1)
The breaker may trip due to the tolerance range.
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