
10 | SAMLEX AMERICA INC.
SECTION 4 |
Principles of Operation
(i) 4-Hr/ 8-Hr Timer runs out (
Section 7.5
) OR,
(ii) Current reduces to 10% of Bulk Stage
Current i.e. 5A+/-0.5A
NOTE:
Please see “NOTES” for Fig 4.2
Voltage
curve
Voltage Curve shows voltage
at the Output Connectors
(Battery Connected)
Current Curve shows output
current
Current curve
80% of
current
capacity
of charger
(40 Amps)
Time, Hours
14.4V
13.5V
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
55
50
45
40
35
30
25
20
15
10
5
0
AMPS VOLTS
50A
40A
Stage 1
“Bulk Stage”
Stage 2 “Absorption Stage”
Start of Absorption Stage (
See Section 4.3.2
) and
Absorption Stage Timer (
See Section 7.5
)
Level
2
Stage 3
“Float Stage”
B1
C1
D1
E1
B2
C2
D2
E2
A1
A2
Level
1
Figure 4.1 Charging Curve - SEC-1250UL
28.8V
27V
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
27.5
25.0
22.5
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0
B1
C1
D1
E1
B2
C2
D2
E2
25A
20A
A1
A2
Voltage
curve
Current curve
80% of
current
capacity
of charger
(20A)
AMPS VOLTS
Start of Absorption Stage (
See Section 4.3.2
) and
Absorption Stage Timer (
See Section 7.5
)
Voltage Curve shows voltage
at the Output Connectors
(Battery Connected)
Current Curve shows output
current
Time, Hours
NOTE:
Please see “NOTES” for Fig 4.2
Stage 1
“Bulk Stage”
Stage 2 “Absorption Stage”
Level
2
Stage 3
“Float Stage”
Level
1
(i) 4-Hr/ 8-Hr Timer runs out (
Section 7.5
) OR,
(ii) Current reduces to 10% of Bulk Stage
Current i.e. 3A+/-0.5A
Fig. 4.2 Charging Curve for SEC-2425UL