Section 10: Internal Fuse Ratings - SamplexPower SEC-1250UL Guide D'utilisation

SECTION 9 |
their normal operating currents. Ensure that the starting / inrush current or the maximum operating
current of the load is lower than the current limit value of the charger. Do not use a load that draws
more than 50A (25A +/- 1A for "Half Power Mode") for SEC-1250UL or more than 25A (12.5A +/- 1A
for "Half Power Mode") for SEC-2425UL. Once the load current is reduced below the above limiting
values, the charger will recover automatically.
9.4 THE BATTERY IS GETTING OVER CHARGED / OVERHEATED / LOSES WATER OR BOILS.
• Two banks of batteries are being charged and the batteries in the two banks are in dissimilar
state of discharge: When charging more than one bank of batteries at the same time using 3
Stage Charging, ensure that the batteries in the banks are in a similar discharged condition. If one
bank is completely discharged and another is almost fully charged, the bank that is fully charged
will be subjected to over charge condition during the time when the charger remains in Stage 2
(Absorptionn Stage) for charging the completely discharged bank.
If 2 banks of batteries are required to be charged and they are at different discharged conditions,
select "2 Stage Charging" with the help of switches S1 and S2 of the set of 4 Dip Switches (both S1
& S2 in off condition) - See Section 7.4 and Tables 7.1 and 7.2.
• Very high charging current for low Ah capacity battery: Charging rate should normally be limited
to C/10 unless specified otherwise by the battery manufacturer. Very high charging rate may lead
to reduction in the cell voltage when gassing starts and can result in higher temperatures, loss
of water and boiling of the battery. The charging rate may be reduced to 50% using "Half Power
Mode" - See Section 7.6 for details.
9.5 THE BATTERY IS TAKING EXCESSIVELY LONG TIME TO FULLY RECHARGE OR WHEN
THE CHARGER IS POWERED AND IS BEING USED AS A DC POWER SUPPLY / UPS, THE
OUTPUT VOLTAGE DROPS AT LOWER DC LOAD CURRENTS.
• The unit is in "Half Power Mode": [Green LED (5 in Fig 3) is lighted]. When this mode is selected,
the maximum charging current will be automatically reduced to 25A +/- 1A for SEC-1250UL and
12.5A +/-1A for SEC- 2425UL. Hence, the charging time will increase. Switch off the "Half Power
Mode" if the full rated charging capacity is required. Refer to Section 7.6 for information on "Half
Power Mode".
SECTION 10 |
Both the AC input side and DC output side have fuses.
The AC input side fuse is located on the PCB F1 inside the unit (soldered). It is rated at
250V, 12A, Time Delay (Size 6.3 mm x 32 mm, pig-tail; Littel Fuse 0218012 or, equivalent).
The DC side fuses are located inside the unit. To access these fuses, remove the top cover.
These are automotive blade fuses (for example, "Littelfuse" Type ATO) rated as follows:
SEC-1250UL
SEC-2425UL
30 | SAMLEX AMERICA INC.
Troubleshooting
Internal Fuse Ratings
2 pieces, each rated at 32V, 30A
2 pieces, each rated at 32V, 20A