IEC 60896-22 is applicable to :-
- All stationary Lead-acid cells
- Monobloc batteries of the valve regulated type
- For Float charge application: They can be permanently connected to a load and d.c. power supply.
- In a static location: not generally moved from place to place.
They are incorporated into stationary equipment or installed in battery room.
These kinds of batteries can be used in
- Utility switch
- Emergency power or similar applications
Objective of IEC 60896-22 :- It specify the methods of tests for all types and construction of valve regulated stationary Lead acid batteries and monobloc batteries.
Does not applicable :
- lead-acid cells and monobloc batteries used for vehicle engine starting applications
- solar photovoltaic energy systems
- general purpose applications
There is a list of tests performed on the batteries for safe operation characteristics, durability Characterstics & performance Characteristics.
Safe operation characteristics
|To determine the emitted gas volume
|High Current Tolerance
|To verify the adequacy of current conductioncross- sections
|Short circuit current & d.c internal resistance
|To provide data for the sizing of fuses in theexterior circuit
|Protection against internal ignition from external spark sources
|To evaluate the adequacy of protective features
|Protection against ground short propensity
|To evaluate the adequacy of design features
|Content and durability of required markings
|To evaluate the quality of the markings and thecontent of the information
|To ensure the presence of material identificationmarkings
|To ensure the correct opening of safety valves
|Flammability rating of materials
|To verify the fire hazard class of battery materials
|Intercell connector performance
|To verify the maximum surface temperatures ofthe connectors during high rate discharges
|To verify the available capacities at selecteddischarge rates or discharge durations.
|Charge retention during storage
|To provide storage duration data
|Float service with daily discharges
|To determine cyclic performance under float charge conditions
|To determine the recovery of capacity orautonomy time after a power outage
|Service life at an operating temperature of40 °C
|To determine the operational life at elevated temperatures
|Impact of a stress temperature of 55 °C or60 °C
|To determine the influence of high stresstemperatures on cell or monobloc battery life
|To determine the expected behaviour when excessive capacity is discharged
|Thermal runaway sensitivity
|To determine the expected times to establish a condition of escalating current and temperature
|Low temperature sensitivity
|To determine the sensitivity toward damage induced by electrolyte freezing
|Dimensional stability at elevated internalpressure and temperature
|To determine the propensity of the cell ormonobloc battery to be deformed by internal
pressure and at elevated temperature
|Stability against mechanical abuse of unitsduring installation
|To determine the propensity of the cell ormonobloc battery to fracture or leak when
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