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Summary of Contents for EnerSys PowerSafe PV Bloc
- Page 1 Sustainable solutions PowerSafe PV Bloc ® Operation Guide for Solar Applications...
- Page 2 Operation Guide > PowerSafe ® PV Bloc < Safety precautions Batteries give off explosive gasses. They are fi lled with dilute sulphuric acid, which is very corrosive. When working with sulphuric acid, always wear protective clothing and glasses. Exposed metal parts of the battery always carry a voltage and are electrically live (risk of short circuits).
- Page 3 Operation Guide > PowerSafe ® PV Bloc < The nominal capacity of PowerSafe PV blocs for renewable energy applications is given as follows: ® Capacity Ah Current A Discharge period h End voltage V/cell 1.85V Discharge Rate: Is the ratio of discharge current divided by battery capacity Depth of Discharge (DOD): Capacity removed from the battery compared to total capacity.
- Page 4 Operation Guide > PowerSafe ® PV Bloc < Charge Effi ciency The charge effi ciency is the ratio between the quantity of Ah delivered during the discharge and the quantity of Ah necessary to restore the initial state of charge. State of Charge (SOC) Ah Effi...
- Page 5 Operation Guide > PowerSafe ® PV Bloc < PowerSafe PV Bloc batteries must be given a refreshing charge: ® when maximum storage time is reached, or when the OCV approaches 2.10Volts/cell whichever occurs fi rst 1.3 Freshening Charge The refresh charge should be conducted using constant voltage (adjusted to the temperature) eg. 2.27Vpc at 20-25°C with 0.1 C Amps current limit for a minimum period of 96h.
- Page 6 Operation Guide > PowerSafe ® PV Bloc < 1.6 Products Covered by this Guide Nominal Nominal Dimensions Capacity (Ah) Type Nominal 10 hr rate 120 hr rate Typical Short Internal Voltage (V) Length Width Height Weight Circuit Resistance 1.80Vpc 1.85Vpc Current (A) (mΩ) @20°C...
- Page 7 Operation Guide > PowerSafe ® PV Bloc < 2.2 Discharging As a rule, installations will be equipped with a regulator whose voltage threshold values will protect against deep discharge: Discharge 120h 240h Low voltage alarm per cell 1.92 1.92V 1.95V Disconnect voltage per cell 1.80 1.85V...
- Page 8 Fax +65 6292 4380 www.enersys.com Please refer to the website address for details of your nearest EnerSys office: www.enersys-emea.com © 2011 EnerSys ® . All rights reserved. Trademarks and logos are the property of EnerSys and its affiliates unless otherwise noted.
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