AlphaCell SMU-F TM Valve Regulated Lead Acid Battery Technical Manual AlphaCell SMU-F Valve Regulated Lead Acid Battery Effective: February 2007 Alpha Technologies
AlphaCell SMU-F Valve Regulated Lead Acid Battery SMU-F-BATTERY Effective Date: February 2007 Copyright© 2007 Alpha Technologies, Inc. member of The GroupTM NOTE: Photographs contained in this manual are for illustrative purposes only. These photographs may not match your installation. NOTE: Operator is cautioned to review the drawings and illustrations contained in this manual before proceeding.
Table of Contents Safety Notes........................................................................................................................... 6 Battery Safety Notes.............................................................................................................. 7 Chemical Hazards.................................................................................................................. 7 Recycling and Disposal Instructions.......................................................
Tables and Figures Table 1-1, Mechanical Specifications..................................................................................... 9 Fig. 1-1, Dimensions.............................................................................................................. 9 Fig. 1-2, Capacity Related toTemperature and Discharge Rate........................................... 10 Table 2-1, Float Voltages.......................................................................................................
Safety Notes Review the drawings and illustrations contained in this manual before proceeding. If there are any questions regarding the safe installation or operation of the system, contact Alpha Technologies or the nearest Alpha representative. Save this document for future reference. To reduce the risk of injury or death, and to ensure the continued safe operation of this product, the following symbols have been placed throughout this manual. Where these symbols appear, use extra care and attention.
Battery Safety Notes WARNING! Lead-acid batteries contain dangerous voltages, currents and corrosive material. Battery installation, maintenance, service and replacement must be performed only by authorized personnel. Chemical Hazards Any gelled or liquid leakage from a valve-regulated lead-acid (VRLA) battery contains dilute sulfuric acid, which is harmful to the skin and eyes. Emissions are electrolytic, and are electrically conductive and corrosive.
1.0 Introduction The SMU-F range of Valve Regulated Lead Acid (VRLA) batteries is designed to meet the needs of the wireless communications industry. Safety, reliability and a long service life in standby applications are the result of an industry-leading manufacturing technology and a product design purpose-built for the requirements of a wireless communications network. Alpha Technologies also offers a full line of racking solutions to accomodate the SMU-F range of batteries.
1.0 Introduction, continued 1.2 Specifications and General Information Specifications are subject to change without notice. Standard Stud Size * Type Length Width Height (in/mm) Weight SMU-F 12-50-FR 15.4/390 4.1/105 8.9/227 47.4/21.5 8mm SMU-F 12-75-FR 21.9/558 4.1/105 8.9/227 68.3/31.0 8mm SMU-F 12-85-FR 15.6/395 4.1/105 10.6/270 69.5/31.5 8mm SMU-F 12-105-FR 20.1/511 4.3/110 9.4/238 79.4/36.0 8mm SMU-F 12-125-FR 21.9/558 4.9/125 10.6/270 108.0/49.
1.2 Specifications and General Information, continued Gassing SMU-F batteries have a high recombination efficiency (>98%) and for cells operated at 68ºF (20ºC) under normal operating conditions venting is virtually negligible. The following gassing rates can be expected: • 2 ml/Ah/cell/month at a float voltage of 2.27Vpc. • 10 ml/Ah/cell/month at a recharge voltage of 2.40Vpc.
2.0 Charging NOTE: Refer to your particular charger’s manual for specific instructions regarding charger setup and operation. During operation, verify batteries are: • Float-charged in order to maintain a fully charged condition during the standby period. • Completely recharged after a discharge. Recharge as soon as possible to ensure maximum protection against subsequent power outages. Early recharge also ensures maximum battery life.
2.1 Float Charge, continued Float Current The normal float current observed in fully charged SMU-F batteries at 2.27Vpc at a temperature of 68ºF (20ºC) is approximately 30mA per 100Ah. Because of the nature of recombination phenomena, the float current observed in SMU-F batteries is normally higher than that of vented batteries and is not an indication of the state of charge of the batteries. Thermal Runaway Float current is primarily a function of voltage and temperature.
2.2 Recharge Following Discharge Using a current limit of 0.1 C10, it takes approximately 9 hours to restore 80% of the discharge, and 11 hours to restore 90%. This can be compared to a current limit of 0.25 C10, whereby 80% is returned in approximately 4 hours, and 90% within 5 hours. NOTE: While less charger (rectifier) amps means a longer recharge time, too many charger (rectifier) amps can damage the battery. 110% 100% 90% Capacity 80% 70% 60% 50% 0% 30% 20% 0.1C10 0.1C5 0.
4.0 Discharge Specifications Specifications are subject to change without notice. Model: SMU-F12-50-FR Discharge Time End Voltage 1m 5m 15m 30m 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h 1.60V 193 175 88.0 55.0 33.0 20.0 14.0 11.9 10.0 8.50 6.50 5.50 4.85 2.95 2.55 1.65V 185 161 84.0 53.0 32.0 19.5 13.5 11.5 9.70 8.40 6.50 5.40 4.80 2.90 2.50 1.67V 182 155 82.5 52.0 31.5 19.3 13.3 11.3 9.60 8.30 6.45 5.35 4.75 2.88 2.45 1.70V 178 149 81.0 51.
4.0 Discharge Specifications, continued Specifications are subject to change without notice. Model: SMU-F12-105-FR Discharge Time End Voltage 1m 5m 15m 30m 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h 1.60V 399 345 177 106 63.0 41.0 28.7 24.4 18.9 16.4 13.1 10.6 8.90 5.40 4.50 1.65V 382 324 170 104 62.0 40.9 28.5 24.2 18.8 16.3 13.0 10.5 8.80 5.35 4.45 1.67V 369 314 167 104 62.0 40.9 28.4 24.1 18.8 16.3 13.0 10.5 8.75 5.33 4.43 1.
4.0 Discharge Specifications, continued Specifications are subject to change without notice. Model: SMU-F12-155-FR Discharge Time End Voltage 1m 5m 15m 30m 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h 1.60V 592 512 263 158 93.0 60.9 42.7 36.3 28.2 24.3 19.4 15.8 13.3 8.20 6.90 1.65V 568 482 252 154 93.0 60.7 42.4 36.0 28.0 24.2 19.3 15.6 13.1 8.00 6.70 1.67V 549 467 247 154 92.5 60.7 42.2 35.9 27.9 24.2 19.2 15.5 13.0 7.95 6.65 1.
5.0 Forms Charging Recording Form Record before charging and two hours after Model of Battery Date Battery Bank No. Room Temperature Charging Current Total Battery Voltage Remarks Cell # Voltage S.G. of Electrolyte Electrolyte Temperature NOTE: Wait two hours before taking final readings to allow the electrolyte to cool. SMU-F-BATTERY Fig.
5.0 Forms, continued Discharge Recording Form Model of Battery Date Battery No. Room Temperature Charging Current Total Battery Voltage Remarks Cell # Inital Voltage Cell Voltage at Time Period End 15min 30min 1hr 2hr 3hr 4hr 4:30hr 5 hr Fig.
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