IEEE 1184:2006 pdf free download

IEEE 1184:2006 pdf free download.IEEE Guide for Batteries for Uninterruptible Power Supply Systems.
An equalizing or freshening charge is given at a voltage higher than the float voltage ftr a selected length of time necessary to correct deviations from the manufacturer’s specified voltage or electrolyte specific gravIty, or if one or more cells fall below the minimum voltage defined by the manufacturer (corrected for temperature). The equalizing charge should not exceed the voltage limits of the connected equipment (UPS) and should not exceed the battery manufacturer’s specifications. The equalizing charge can be applied to the entire battery or to an individual cell. Since excessive equalizing charge will have an adverse effect on battery lifc. equalizing should be minimized.
Given this consideration, the user will want to evaluate the use of any equipment that automatically equalizes after a discharge, particularly if that equipment automatically equalizes for a long period after short discharges or equalizes on a preset time base. Recharging will occur at normal float voltages however, recharging can be expedited using an equalizing chargc.
VRLA cells should not be equalized except when recommended by the battery manufacturer.
6.3 Warranty considerations
Since the warranties vary widely among manuijcturcrs. the warranty deserves careful consideration when selecting a battery.
6.3.1 Acceptance criteria
The warranty offered should address the application and use of the battery, Sonic manufacturers offer warranties based on cycle service (nwnber of cycles) andJor temperature, and may require use of a monitor for validation. Warranties can be based on full float service and design life. It is important to consider how the manufacturer defines a UPS application and how this might affect the warranty. It is important to understand what type of record keeping may be required to validate the warranty.
6.3.2 Full warranty replacement
lithe battery ora cell becomes defective within the initial interval of service life (typically one year). it will usually be replaced by the manufucturer under the lull warranty. This normally does not include the labor to change out the battery or cell andor the shipping charges.
6.3.3 Pro-rated adjustment
If the battery or a cell fails prematurely after the full warranty replacement interval, the cost of the replacement battery is usually pro-rated based on the months of in-service use and the stated warranty period. This credit is typically applied to the current price of the battery. This normally does not include the labor to change out the new battery or cell, the freight to ship the new battery or cell, or the cost of disposal of the failed battery or cell.