14 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 15
SECTION 4 |
Principles of Operation
occurs earlier
):
a) When the 4 Hr / 8 Hr Absorption Stage Timer (
Selected by DIP Switches “S3” and
“S4”- See Section 7.5, Table 7.3
) runs out OR,
b) When the charging current tapers down to 10% of the rated “Bulk Current Capac-
ity” of the charger;
• 5A +/- 0.5A for SEC-1250UL
• 3A +/- 0.5A for SEC-2425UL
4.3.2.3.3 Thresholds of Charger Currents for Change over Between Absorption and
Float Stages
: The thresholds of charger current for change over between the Absorption
Stage (
Displayed as "Absorption"/“U0 Phase" in optional Remote Control 900-RC
) and
Float Stage (
Displayed as "Float"/“U Phase" in optional Remote Control 900-RC
) are
shown below:
Change Over
SEC-1250UL SEC-2425UL
From Absorption Stage (
Level 2
) to Float Stage
5A +/- 0.5A 3A +/- 0.5A
From Float Stage to Absorption Stage (
Level 1
)
10A +/- 0.5A 6A +/- 0.5A
4.3.2.3.4 Charging Characteristics during Absorption Stage
• Absorption Stage Levels 1 and 2 (
Displayed as "Absorption"/“U0 Phase" in op-
tional Remote Control 900-RC
) feed additional 35% to 55% of the capacity that
adds to the total charged capacity of around 115% to take care of around 15%
loss due to charger efficiency
• There will be moderate gassing during this Absorption Stage
• Orange LED marked "Absorption"/“U0 Phase” on the optional Remote Control
Model No.900-RC will be lighted
4.3.2.4 Thresholds of Charger Currents for Change over Between Absorption and Float
Stages:
The thresholds of charger current for change over between the Absorption
Stage (
Displayed as "Absorption"/“U0 Phase" in optional Remote Control 900-RC
) and
Float Stage (
Displayed as "Float"/“U Phase" in optional Remote Control 900-RC
) are
shown below:
Change Over
SEC-1250UL SEC-2425UL
From Absorption Stage (
Level 2
) to Float Stage
5A +/- 0.5A
3A +/- 0.5A
From Float Stage to Absorption Stage (
Level 1
)
10A +/- 0.5A 6A +/- 0.5A
4.3.3 Stage 3 - Float Stage
4.3.3.1
During this stage, the charger outputs a constant Float Voltage of (i) 13.5V for
SEC-1250UL or, (ii) 27.0V for SEC- 2425UL. This helps in maintaining full capacity of the bat-
tery and also provides replacement charge to overcome self discharge of the battery. The
battery can remain connected in this stage indefinitely without the risk of discharging.