MD Helicopters 369D - Page 507

CSP-HMI-3MD Helicopters, Inc.
MAINTENANCE MANUAL
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G96-3006
3.0
2.5
2.0
1.5
1.0
0.5
0
0 0.1 0.2 0.5 1.0 2.0 5.0 15 20 50 100
ELAPSED TIME IN MINUTES
BATTERY CHARGING GRAPH
FACTOR VS. TIME
150
100
75
50
25
01020
TIME (MINUTES)
0
30 40 50 60
SEVERELY DISCHARGED BATTERY
MODERATELY DISCHARGED BATTERY
TYPICAL CHARGING CURVE
FOR BATTERY
(CONSTANT VOLTAGE TYPE CHARGING)
AT 75°F
30
20
10
0
TIME (SECONDS)
0 2 4 6 8 10 12 1416182022 24262830
POSSIBLE SYSTEM PEAK 369 AMPS.
PROBABLE SYSTEM PEAK 360 AMPS.
ENGINE STARTING REQUIREMENTS DATA
150
100
50
0
200
250
300
350
02 4 6 810121416182022 24262830
TIME (SECONDS)
STARTING TRANSIENT CURVE
LIGHT OFF
STARTER AMPERES STARTER VOLTS
CHARGING FACTOR
CHARGING CURRANT - AMPS
Figure 209. Battery Charging and Engine Starting Data,
369D/E Helicopters