AS 5715:2015 pdf free
AS 5715:2015 pdf free.Uninterruptible power systems (UPS) for roadside devices
Under the full range of input supply voltages and environmental factors, and the full range of load conditions, including overloads, the battery management system shall do the following:
(a) Provide optimum charging and appropriately staged charge management of the type of storage batteries and capacities required for the UPS.
(b) Provide capacity to charge the storage batteries at their maximum rate of charge.
(c) Maintain the storage batteries in optimal state of charge for all conditions and circumstances of operation and prevent overvoltage being applied to the storage batteries.
(d) Recharge, including trickle charge when appropriate, the storage batteries under temperature compensation controlled conditions with feedback provided by a skin temperature sensor on a typical storage battery.
(e) Prevent the generation of undesirable harmonic currents in the supply authority’s circuits due to the charging operation.
(f) Limit ripple voltage on the d.c. rail of the storage batteries to less than 0.25% of the battery bus voltage.
(g) Prevent damage to the battery charger and its power semiconductor components by providing automatic output current limiting for all forms of output current overload.The output current limiting function shall not cause the operation of supply protective devices for the power semiconductor components. Upon removal of the overload condition, the battery charger shall automatically return to normal operation.
(h) Provide appropriate indication within the UPS status indicators when an overload condition occurs to the battery charger.
(i) Provide a power factor of not less than 0.95 when the UPS is charging the storage batteries and the load is disconnected.
(j) Provide the required data to and accept commands from the user interface.
When the UPS is supplied by a portable generator with appropriate output ratings, the battery management system shall operate with the same performance as when the UPS is connected to normal mains power supplies.AS 5715 pdf free download.
