lack>

AUTOMATIC BATTERY CHARGER OWNERS MANUAL SEC - 1245A
SEC - 2425A
MODELS
AUTOMATIC BATTERY CHARGER
OWNERS MANUAL
Please read this manual before operating your charger Important safety precautions............................................................2
Description.......................................................................................3
Features............................................................................................3
Components and accessories...........................................................4
Specifying lead acid batteries and chargers.....................................5
Charging stages................................................................................9
Cooling...........................................................................................12
Protections.....................................................................................13
Installation.....................................................................................14
Preparing the charger for operation...............................................15
Remote Panel ................................................................................19
Operation.......................................................................................
20
Troubleshooting.............................................................................23
Internal / external fuse ratings.......................................................25
Specifications.................................................................................26
Warranty information.....................................................................27
CONTENTS
Page 1 IMPORTANT SAFETY PRECAUTIONS
Hazardous conditions may result if the charger is not installed or operated correctly.
Please read the following instructions to prevent personal injury or damage to the
charger
BATTERY RELATED To reduce the risk of battery explosion, follow these instructions and those
marked on the battery Never smoke or allow an open spark or flame in the vicinity of the battery or
engine Charge only Lead Acid type of batteries (Flooded / Absorbed Glass Mat
(AGM) / Gel Cell). Do not charge other type of batteries like Nickel Cadmium
(NiCad), Nickel-Metal Hydride (Ni-MH), Dry-Cell etc. Other types of batteries
might burst causing personal injury Never charge a frozen battery Working in the vicinity of Lead Acid batteries is dangerous. Batteries generate
explosive gases during normal operation. Take necessary safety precautions
when installing the charger near a battery or in a battery compartment (Follow
safety instructions given by the battery manufacturer) Never place the charger directly above or below the battery being charged;
gases or fluids from the battery will corrode and damage the charger. Locate
the charger as far away from the battery as DC cables permit. Do not install in
the same compartment as batteries
CHARGER RELATED Do not operate the charger in a closed-in area or restrict ventilation in any way.
Install in a well ventilated, cool, dry place. The charger must not be operated in a damp or wet environment. When
mounting in a boat, make sure it is not subjected to bilge water splash Do not block the ventilation openings / openings for the cooling fan. There
should be at least 6 inches clearance all around the unit Installation and wiring must comply with the local and the national electrical
codes. It is recommended that installation and wiring may be done by a
certified electrician Wrong installation on a boat may lead to corrosion of the boat. It is recom-
mended that installation on the boat must be carried out by a boat electrician Disconnect the AC input power to the charger before connecting / disconnect-
ing the batteries or other DC loads or when working on the charger Disconnect the AC input power before changing setting of the Dip Switches The chassis of the charger is connected to the earth ground pin of the power
cord plug. Ensure that the earth ground pin of AC receptacle feeding the
charger is connected to earth ground Do not use an adapter. If a grounding type of receptacle is not available, do not
use this charger until the proper outlet is installed by a qualified electrician. Do not operate the charger if the power cord is damaged
Page 2 DESCRIPTION
SEC-1245A (for 12 V batteries) and SEC-2425A (for 24 V batteries) are high current, 3
Stage Chargers that deliver 45 A and 25 A respectively for almost 75% to 80% of the
charging cycle ensuring a very fast, safe and complete charging of lead acid batteries.
The nomenclature I Uo U is a DIN nomenclature and signifies the 3 charging stages
I for constant current Bulk Charge Stage 1, Uo for constant over voltage Absorption /
Boost Stage 2 and U for constant voltage Float / Maintenance Stage 3 ( under DIN
specification, voltage is designated U and current is designated I . The subscript o
in Uo signifies over voltage)
FEATURES
Page 3 Fully automatic Connect and Forget operation Suitable for flooded , AGM or Gel Cell type of lead acid batteries State-of-the-art switched mode technology is used for high efficiency, light-
weight and quiet operation User selectable 2 or 3-Stage automatic charging algorithm with timed Boost /
Absorption Stage and temperature compensation ensures rapid, safe and full
return of capacity. Ability to reduce maximum charging current to approximately 1/3 of the rated
capacity during Mute Mode. This allows safe charging of lower capacity
batteries Includes a Battery Temperature Sensor allowing temperature compensated
charging, if required 2 banks of batteries can be charged simultaneously without the use of an
external battery isolator. The charging current will be shared between the two
banks depending upon the depth of discharge of the connected batteries 3 colour LED indicates charging status Fan cooled with provision to switch off the fan under Mute Mode Protections against short circuit, over current, reverse battery connection and
over-temperature Can be used as a power supply or as a DC UPS ( Uninterruptible Power
Supply) when used in conjunction with a battery Optional Remote LED Panel with 10 Metres of wire for remote on / off control
and indication of charging status COMPONENTS AND ACCESSORIES
1. Output connnector + Bank 1
2. Output Connector + Bank 2
3. Output Connector - Common
4. Charging Indicator LED
5. Dip Switches for mode selection
6. Jack for Remote Panel
7. Push Switch for Mute Mode
8. LED for Mute Mode indication
9. AC input Power On / Off Switch
10. AC fuse holder
11. Cooling fan
12. Jack for Temperature Sensor
13. AC power cord inlet
14*. Cable with plug
15*. Remote Panel
(*14 & 15 are optional accessories)
16. Temperature sensor element
17. plug
4
7
5
3
11
12
10
13
14
15
16
17
Page 4
6
8
1
2
9 SPECIFYING LEAD ACID BATTERIES AND CHARGERS
FLOODED / WET CELL AND SLA (SEALED LEAD ACID) BATTERIES
There are two categories of lead acid batteries Flooded/Wet Cell and Sealed Lead Acid
(SLA). A flooded/wet cell battery has a high tolerance to overcharging. However, it will
release hydrogen gas when charging that must be properly vented and the water level
must be checked frequently. SLA batteries can either be Gel Cell or AGM (A</b>bsorbed
G</b>lass M</b>at). Both the Gel Cell and AGM are maintenance free, have no liquid to spill and
gassing is minimal. The Gel Cell is the least affected by temperature extremes, storage at
low state of charge and has a low rate of self discharge. An AGM battery will handle
overcharging slightly better than the Gel Cell
Lead-acid batteries can be categorized by the type of application: automotive service -
S</b>tarting/L</b>ighting/I</b>gnition (SLI, a.k.a. cranking) and Deep Cycle service
SLI BATTERIES
Everybody is familiar with the SLI batteries that are used for automotive starting and
powering vehicular accessories. SLI batteries are designed to produce high power in short
bursts but must be constantly recharged (normally with an alternator while driving).
Vehicle starting typically discharges 1%-3% of a healthy SLI batterys capacity.
The automotive SLI battery is not designed for repeated deep discharge where up to 80 %
of the battery capacity is discharged and then recharged. If an SLI battery is used for this
type of application, its useful serv