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Summary of Contents for SamplexPower SEC-1245A
- Page 1 Desktop Switching Owner's Please read this manual before Manual Power Supplies operating your power supply Model: SEC-1245A SEC-2425A...
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Page 2: Table Of Contents
CONTENTS 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 Page 1... -
Page 3: Important Safety Precautions
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. -
Page 4: Description
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 “... -
Page 5: Components And Accessories
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 Half Power Mode 8. -
Page 6: Specifying Lead Acid Batteries And Chargers
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. - Page 7 UNITS OF BATTERY CAPACITY The battery capacity is the measure of the energy the battery can store and deliver to a load. It is determined by how much current any given battery can deliver over a stipulated period of time. The energy rating is expressed in Ampere Hours (AH). For example, as one of the bench marks, the battery industry rates batteries at 20 hour rate i.e.
- Page 8 DEPTH OF DISCHARGE AND BATTERY LIFE The more deeply a battery is discharged on each cycle, the shorter the battery life. Using more batteries than the minimum required will result in longer life for the battery bank. A typical cycle life chart is given at Table 2 below: Table 2.
- Page 9 CHARGING BATTERIES The batteries can be charged by using good quality AC powered battery charger or from alternative energy sources like solar panels, wind or hydro systems. Make sure an appropri- ate battery charge controller is used. It is recommended that the batteries may not be charged at current >...
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Page 10: Charging Stages
CHARGING STAGES Stage 2 Uo Phase Stage 1 Stage 3, Timed for 4 / 8 I Phase U Phase Hours Curve for Voltage U, Uo Voltage V Curve for Current I 80% of current 10% of current capacity of capacity of charger charger Current, I... - Page 11 When the battery is deeply discharged, it will initially try to draw a very large current. If this initial current draw is more than 45 A (SEC-1245A) or more than 25A (SEC-2425A), the charger will enter Stage 1 – The Bulk Charge Mode (“I” Phase).
- Page 12 When the charging current reduces to approximately 10% of the charger capacity “I” (4.5 A +/0 .5 A for SEC-1245A and 3 A +/- 0.5 A for SEC-2425A), the charger automatically changes over to “Stage 3 - Float / Maintenance Charge Mode (U Phase)”. However, if the...
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Page 13: Cooling
(Charging Indicator LED will be Green). Please note that the fan will be off in the Float Stage 3 (The Charging Indicator LED will be Green). The operation of the fan is controlled by the current supplied by the charger as follows: SEC-1245A SEC-2425A Switches on when change over from Float stage (“U”... -
Page 14: Protections
REVERSE BATTERY CONNECTION CUT OFF The output is internally fused on the DC side – 2 x 30 A fuses for SEC-1245A and 2 X 20 A fuses for SEC-2425A. In case, the polarity of the battery connection is reversed, the fuse(s) will blow. -
Page 15: Installation
DC cables used for connecting to the battery / other DC loads. 3 pieces of “pin” style terminal lugs have been provided as follows: • For SEC-1245A Will accomodate up to AWG # 4 cable •... -
Page 16: Preparing The Charger For Operation
AC power is available to the charger (the maximum charging current of 45 A of SEC-1245A and 25 A of SEC-2425A will be shared among the connected banks of the batteries depending upon their discharged states). In case the AC power fails or if there is no output from the charger, the isolating diodes will prevent charging / discharging among the batteries connected to the banks. - Page 17 CAUTION! Do not change the DIP Switch setting when the charger is operating. Always change the DIP Switch setting when the charger is off, i.e. after disconnecting the charger from the AC input power). NOTE: The voltages are for battery temperature of 80º F. DIP Switch Setting for SEC-1245A Float Boost Battery Type...
- Page 18 DIP Switch Setting for SEC-2425A Float Boost Battery Type Charging Stages / Application Stand-alone charging OFF * ON * 27 V * 28.8 V * Flooded / AGM * 3 Stages (Stages 1, 2, 3) 27 V 28.0 V Gel Cell 3 Stages (Stages 1, 2, 3) Charging loaded battery Charging two banks and the batteries in the two banks are in dissimilar discharged...
- Page 19 A provision has been made to reduce the maximum charging current to approximately half: 22.5 A +/- 1 A for SEC-1245A & 12.5 A +/- 1 A for SEC-2425A. This mode is termed as “Half Power Mode”. This mode can be selected by pressing push switch (7) marked “Half Power Mode”.
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Page 20: Remote Panel
Yellow LED “Uo Phase” is lighted – Indicates that the charger is in Stage 2 – Constant Overcharge Voltage, Timed Absorption / Boost Charge Stage (“Uo” Phase) and is delivering between 36 A to 4.5 A (SEC-1245A) or between 20 A to 2.5 A (SEC-2425A) •... -
Page 21: Operation
Stage 3 - Constant Voltage, Float or Maintenance Charge Mode (“U” Phase). The charger is delivering < 4.5 A +/- 0.5 A (SEC-1245A) or < 3 A +/- 0.5 A (SEC- 2425A). The battery is fully charged. When the battery is fully charged, it will draw very low current to compensate for its self discharge. - Page 22 CHARGING A BATTERY INSTALLED IN A VEHICLE Follow these steps when the battery is installed in a vehicle. A spark near a battery may cause battery explosion. For safety and to reduce the risk of spark near the battery: Position AC and DC cords to reduce risk of damage by hood, door or moving engine parts.
- Page 23 POWERING OTHER DC LOADS The charger can be used as a power supply or as a DC UPS (DC Un-interruptible Power Supply. For both these applications, first set switches S1 and S2 of DIP Switch (5) to off position to set the charger to work in 2 stage mode (See under “Selecting the Type of Battery and Charging Stages”).
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Page 24: Troubleshooting
TROUBLESHOOTING The symptoms of abnormal operation and the possible cause(s) and remedies are given in the succeeding paragraphs. There is no output. The AC power on / off switch (9) does not illuminate when switched on. The charging indicator LED (4) is off (On the Remote Panel (15), the Green LED under “Power”... - Page 25 Do not use a load that draws more than 45 A (22.5 A +/- 1 A for “Half Power Mode”) for SEC-1245A or more than 25 A (12.5 A +/- 1 A for “Half Power Mode”) for SEC-2425A.
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Page 26: Internal / External Fuse Ratings
When this mode is selected, the maximum charging current will be automatically reduced to 22.5 A +/- 1 A for SEC-1245A and 12.5 A +/-1 A for SEC- 2425A. Hence, the charging time will increase. Switch off the “Half Power Mode” if the full rated charging capacity is required. -
Page 27: Specifications
SPECIFICATIONS PARAMETER SEC-1245A SEC-2425A Nominal Input Voltage Factory Preset 120 VAC/50-60 Hz 120 VAC/50-60 Hz (105 to 125 VAC) (105 to 125 VAC) By changing internal 230 VAC/50-60 Hz 230 VAC/50-60 Hz jumper position (207 to 253 VAC) (207 to 253 VAC) -
Page 28: Warranty Information
WARRANTY INFORMATION 2 YEAR Limited Warranty SEC-1245A / SEC-2425A battery chargers manufactured by Samlex America, Inc. (the “Warrantor”) are warranted to be free from defects in workmanship and materials under normal use and service. This warranty is in effect for 2 years from the date of purchase by the user (the “Purchaser”). - Page 29 e-mail: samlex@samlexamerica.com 110-17 Fawcett Rd T: 604 525 3836 website: www.samlexamerica.com Coquitlam, B.C. F: 604 525 5221 Canada V3K 6V2...
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