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*BTU/hr assumes 90% efficiency at 100% load
Appendix C: Default Low DC Current Alarm Threshold
The A77 charger uses a shunt to measure DC output current. To prevent undue heating and other concerns,
the shunt is sized at a larger current rating then the charger output. The default Low Current alarm is
approximately 1% of the full scale shunt rating.
Unit Output Current
Shunt Bar
Current Rating
Default Low Current
Alarm Threshold
6A 10A 0.1
12A 15A 0.2
16A 25A 0.3
20A 30A 0.3
25A 30A 0.3
30A 50A 0.5
35A 50A 0.5
40A 75A 0.8
50A 75A 0.8
60A 100A 1.0
75A 150A 1.5
100A 150A 1.5
125A 200A 2.0
150A 300A 3.0
200A 300A 3.0
250A 400A 4.0
300A 400A 4.0
400A 600A 6.0
500A 800A 8.0
Summary of Contents for A77
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