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Summary of Contents for Samlexpower BBM-1225
- Page 1 Battery Owner's Please read this manual BEFORE Manual Back-up installing your inverter BBM-1225...
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Page 2: Table Of Contents
oWneR'S MAnUAL | index section 1 Safety Instructions ..............3 section 2 Layout and Dimensions ............4 section 3 Description and Principle of Operation ......... 5 section 4 Installation ................7 section 5 Operation and Protections ........... 9 section 6 Specifi cations .............. -
Page 3: Safety Instructions
Section 1 | Safety instructions 1.1 Precautions when working with batteries • B atteries contain very corrosive diluted Sulphuric Acid as electrolyte. Precautions should be taken to prevent contact with skin, eyes or clothing. • B atteries generate Hydrogen and Oxygen during charging resulting in evolution of explosive gas mixture. Care should be taken to ventilate the battery area and follow the battery manufacturer’s recommendations. • Never smoke or allow a spark or flame near the batteries. • U se caution to reduce the risk of dropping a metal tool on the battery. It could spark or short circuit the battery or other electrical parts and could cause an explosion. • R emove metal items like rings, bracelets and watches when working with batteries. The batteries can produce a short circuit current high enough to weld a ring or the like to metal and thus cause a severe burn. • I f you need to remove a battery, always remove the ground terminal from the battery first. Make sure that all the accessories are off so that you do not cause a spark. SAMLEX AMERICA INC. -
Page 4: Layout And Dimensions
Section 2 | Layout and Dimensions 2.1 LaYout Fig. 2.1: Input Side Fig. 2.2: Output Side LegenD: 1. Positive Input Terminal 2. Negative Input Terminal 3. Common Negative Output Terminal for Load and Battery 4. Positive Output Terminal for Load 5. Positive Output Terminal for Battery note: All input and output terminals: Hole size: 5mm / 0.2"; Set Screw: #10, 24 TPI, 5/16" long 2.1 DiMensions Height: 47.5 mm 22.15 35.7 22.15 note: All dimensions are in mm. Fig. 2.3: Dimensions 4 | SAMLEX AMERICA INC. -
Page 5: Description And Principle Of Operation
Section 3 | Description and Principle of operation 3.1 DescriPtion This unit is used to allow any 12 VDC / 24 VDC power supply (with rated Current Limit value of up to 25A) to function as a DC Uninterrupted Power Source (UPS). This unit is a passive device and functions only as an interface between the external power supply, the battery and the DC load. As long as the power supply is operating normally, it will supply the load as well as float charge the battery. In case the output of the power supply fails, the battery will start feeding the load immediately thus, ensuring uninterrupted DC power to the load. During this period, the battery will start discharging. Once the output of the power supply is resumed, the power supply will take over the load and will also re-charge the battery at its float voltage. 3.2 PrinciPLe oF oPeration inFo Explanation given below is based on use of external power supply with "Constant Current Limit" value of 25A. In a Constant Current Limit Power Supply, when the Current Limit value is reached, the output voltage will not be regulated and will drop. FUSE F1 32V, 25A (FAST BLOW) EXTERNAL POWER SUPPLY BATTERY INPUT BATTERY LOAD INPUT... - Page 6 Section 3 | Description and Principle of operation External power supply is connected to the Positive and Negative input terminals. The battery is connected to the battery terminals through Fuse 1 and the load is connected to the load terminals through Fuse 2. The voltage from the power supply is fed through the isolating Schottky Diode D1 to the load and to the battery through the charging current limiting resistors R1 and R2. Diode D1 provides isolation between the power supply and the battery to prevent the battery from feeding back into the power supply circuit. D1 has a forward voltage drop of up to 0.5V. Hence, the voltage available to the load and to the battery for fl oat charging will be up to 0.5V lower than the output voltage of the power supply. in a battery backup application, the battery will normally remain in a fully charged, standby condition most of the time. it will discharge to the load only when the power supply fails.
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Page 7: Installation
Section 3 | Description and Principle of operation battery backup application using 12V, 40-100 ah battery This Battery Backup Unit has been preset for battery backup application for a 12V battery of approximately 40 to 100 Ah capacity with the maximum charging current limited to approximately 4A (At power supply voltage set at 14.0V and battery discharged to 11.1V). battery backup application using 24V, 40-100 ah battery When using this unit in the preset condition for 24V, 40-100 Ah battery backup application, the charging current will increase approx. two times to 8A (At power supply voltage set at 27.6V and battery discharged to 22.3V). calculating Maximum battery charging current Maximum battery charging current ib = {(Vp – Vd) – Vb} divided by rs………. equation 1 Vp = Output voltage of the power supply (14V for 12V battery and 27.6V for 24V battery) Vd = Forward voltage drop across Schottky Diode D1 (up to 0.5V) Vb = Battery voltage... - Page 8 Section 4 | installation A battery can supply very heavy current in case of short circuit in the path across its terminals. This can cause overheating of the cables / connected device(s) and consequent risk of melted insulation and possibility of fi re. Hence, for safety, a fast acting fuse of appropriate current capacity should be connected in series with the Positive cable and should be placed within 7" of the Positive terminal of the battery. Automotive Blade Type of Fuses, Type ATO/ATC may be used. The following Table gives the recommended sizes of cable and fuses for external power supply rated at 25A. table 4.1 sizing of cable and Fuses cable Length cable Length current up to 3 ft up to 6 ft Fuses F1, F2 #12 AWG #8 AWG 32V, 25A The terminals have a tubular hole of diameter 5 mm with set screw for connecting the input and output cables. If the bare end of a multi-stranded cable is used directly, the set screw may not pinch all the strands fi rmly and will result in a loose connection which...
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Page 9: Operation And Protections
Section 5 | operation and Protections 5.1 oPeration caution! P lease ensure that the rated output current of the 12VDC or 24VDC power supply is only up to 25A. As already stated at in Section 3.1, this unit is a passive device and functions only as an interface between the external power supply, the battery and the DC load. Switch ON the external power supply to power on the load and also to start charging the battery. If the power supply fails or is switched OFF, the load will be immediately fed by the battery. When the load is supplied by the battery, the battery will start draining and its voltage will continue to drop. During this time, the voltage at the Load Terminals (4&3, Fig 2.2) will be up to 0.5V lower than the voltage at the Battery Terminals (5&3, Fig 2.2) due to the Forward Voltage Drop across the internal Schottky Diode D2. 5.2 Protecting the batterY against DeeP Discharge For longer life, Lead Acid Batteries should not be allowed to discharge more than 80%. For example, a 12V / 24V loaded battery at load current of C/10 Amps (C is the Ah capacity) will be 100% discharged at around 11V / 22V and 80% discharged at 11.5V / 23V. It is recommended that a suitable “Low Voltage Disconnect Device”, also called “Battery Guard”, may be used in series with Positive line of the load for protection against deep discharge of the battery. battery guard, Model no. bg-40, made by samlex america, inc. may be considered. - Page 10 Section 5 | operation and Protections In case of short circuit on the load side, the external 25A Fuse (F2) on the load side will blow because of very high additional current supplied by the battery (Additional battery current supplied into the short circuit on the load side = Short circuit current minus 25A from the external power supply). inFo O ver current protection provided by a fuse is determined by its Time versus Current Characteristic. For example, based on the Time Current Characteristics of 32V, 25A Blade Fuse Type ATC-25 from Cooper Bussmann, the fuse can pass extremely high currents for shorter durations as follows and will blow at 25A continuous for > 100 sec: • 550A for 10 ms • 170A for 100 ms • 40A for 1 sec • 25A continuous (for > 100 sec) 5.4 Protection against reVerse PoLaritY oF batterY connection caution! Please ensure that the polarity of battery / load connection is not reversed. This unit does not provide protection to the external power supply / load against reverse polarity connection. This protection has to provided by the user in case the power supply / load do not have integral protection against reverse polarity. Damage to the external power supply / load due to reverse polarity of battery / load connection is not covered by warranty. 10 | SAMLEX AMERICA INC.
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Page 11: Specifications
Section 6 | Specifications MoDeL no. bbM-1225 inPut INPUT VOLTAGE FROM 14VDC for 12V Battery / 27.6VDC for 24V Battery EXTERNAL POWER SUPPLY INPUT CURRENT FROM Up to maximum of 25A EXTERNAL POWER SUPPLY outPut Load terminals: battery terminals battery terminals outPut VoLtage Up to 0.5V less than (battery fully charged): (battery not External Power Supply is ON and Input Voltage Up to 0.5V less than fully charged): is supplying power to the Load Input Voltage Voltage equivalent and charging the Back Up Battery. to State of Charge... -
Page 12: Warranty
Section 7 | Warranty 2 Year LiMiteD warrantY The BBM-1225 are manufactured by Samlex America, Inc. (the “Warrantor“) is warrant- ed to be free from defects in workmanship and materials under normal use and service. The warranty period is 2 years for the United States and Canada, and is in effect from the date of purchase by the user (the “Purchaser“). Warranty outside of the United States and Canada is limited to 6 months. For a warranty claim, the Purchaser should contact the place of purchase to obtain a Return Authoriza- tion Number. The defective part or unit should be returned at the Purchaser’s expense to the author- ized location. A written statement describing the nature of the defect, the date of pur- chase, the place of purchase, and the Purchaser’s name, address and telephone number should also be included. If upon the Warrantor’s examination, the defect proves to be the result of defective material or workmanship, the equipment will be repaired or replaced at the Warran- tor’s option without charge, and returned to the Purchaser at the Warrantor’s expense. (Contiguous US and Canada only) No refund of the purchase price will be granted to the Purchaser, unless the Warrantor is unable to remedy the defect after having a reasonable number of opportunities to do so. Warranty service shall be performed only by the Warrantor. Any attempt to remedy the defect by anyone other than the Warrantor shall render this warranty void. There shall be no warranty for defects or damages caused by faulty installation or hook-up, abuse or misuse of the equipment including exposure to excessive heat, salt or fresh water spray, or water immersion. No other express warranty is hereby given and there are no warranties which extend beyond those described herein. This warranty is expressly in lieu of any other expressed or implied warranties, including any implied warranty of merchantability, fi tness for the ordinary purposes for which such goods are used, or fi tness for a particular purpose, or any other obligations on the part of the Warrantor or its employees and representatives. There shall be no responsibility or liability whatsoever on the part of the Warrantor or... - Page 13 noteS SAMLEX AMERICA INC. | 13...
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- Page 16 Toll Free Numbers Ph: 1 800 561 5885 Fax: 1 888 814 5210 Local Numbers Ph: 604 525 3836 Fax: 604 525 5221 Website www.samlexamerica.com USA Shipping Warehouse Kent WA Canadian Shipping Warehouse Delta BC Email purchase orders to orders@samlexamerica.com 11001-BBM-1225-0816...
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