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Summary of Contents for EnerSys PowerSafe OPzS
- Page 1 Filling and Charging Moist Charged Flooded Batteries PowerSafe OPzS ® PowerSafe ® RESERVE POWER...
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Page 2: Table Of Contents
Contents 1. Definition of moist charged batteries 2. Delivery and storage • Accessories and tools required 3. Battery installation • Stand assembly • Cell installation 4. Putting cells into service 5 - 7 • Filling cells • Initial charge 5. Specific gravity reading •... -
Page 3: Definition Of Moist Charged Batteries
1. Definition of moist charged batteries A moist charged battery is a wet, fully charged battery that has had the electrolyte removed and has a special, air-tight plug used during storage. Do not remove the special air-tight plugs from the moist charged batteries until ready to activate. Moist-charged batteries are active and electrically live at all times. -
Page 4: Battery Installation
3. Battery installation Stand assembly Before starting the assembly of the stand, please ensure that all stand components are available. For a battery above 150V, insulators will be provided with the stand. Assembly instructions Please follow the instructions below in conjunction with the drawings below. To accomplish these operations only a 13mm spanner is required. -
Page 5: Putting Cells Into Service
4. Putting cells into service Filling cells Before removing the air-tight plugs for filling the cells, please ensure that the battery charger is ready for use. Cells should be stored as received and should only be activated (i.e. filled with electrolyte and charged) when installed. -
Page 6: Initial Charge
Initial charge The initial charge is very important as it can affect the life and performance of the battery. Cells must be fully charged before the battery is put into service. Charging must be continued until the specific gravity of every cell reaches between 1.235 and 1.240 at 20°C (maximum level) - see section 5. Constant current Constant voltage Methods of charging... - Page 7 Time to equalise the specific gravity Room temperature 20°C 35°C Charge voltage per cell 2.25V 2.35V 2.35V 2.25V Between 4 and 10 days Between 13 and 30 hours Between 3 and 7 days Between 8 and 18 hours Example: If the room temperature is about 20°C and the initial charge is carried out at 2.35V, it will take 13 to 30 hours to fully charge the cell.
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Page 8: Specific Gravity Reading
5. Specific gravity reading Final specific gravity after charging The specific gravity (20ºC) of each cell at the end of the charge should be between 1.235 and 1.240 (maximum level). Temperature correction Measure the specific gravity with a hydrometer. After reading, squirt the solution back into the cell from which it was drawn. The nominal specific gravity at the end of the charge at the specified level is for a temperature of 20°C. -
Page 9: Safety
6. Safety The battery room should be well ventilated in order to remove gases produced during charging. The gases (a mixture of oxygen and hydrogen) liberated by the cells when on charge may cause an explosion, and therefore, care must be taken not to produce sparks. -
Page 10: Appendices
7. Appendices Electrolyte specification dilute sulfuric acid, specific gravity = 1.280 Specific gravity at 20°C 1.280 +/-0.005 Visual aspect Clear Freezing point -66°C Maximum impurities (mg/l) Antimony Arsenic Copper Sulphur Selenium Iron 10.6 Zinc Nickel Cobalt Manganese Platinum Chloride Nitrate Ammonia Anhydride sulphur Materials oxydisable to KMnO... - Page 11 Typical charge curves Moist charged cells Temperature and specific gravity after filling Initial specific gravity: 1.280 Temperature: 20°C Electrolyte Temperature Electrolyte Specific Gravity 1.290 1.280 1.270 1.260 T°C 1.250 1.240 Electrolyte Temperature 1.230 1.220 Electrolyte Specific Gravity 1.210 Time in minutes Moist charged cells Constant current charge: I = C /30 or 0.033C...
- Page 12 Initial charge record sheet Initial charge record sheet This record sheet must be completed during the initial charge. This record sheet must be completed during initial charge. Battery title: Battery type: Installed at: Date installed: Charge current (A): Time (H) = Time (H) = Time (H) = Time (H) =...
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Page 13: Notes
8. Notes... - Page 14 Notes...
- Page 15 Notes...
- Page 16 189721 Singapore Tel: +1 610 208 1991 Tel: +65 6508 1780 +1 800 538 3627 www.enersys-emea.com Fax: +1 610 372 8613 © 2014 EnerSys ® . All rights reserved. Trademarks and logos are the property of EnerSys ® and its affiliates unless otherwise noted...
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