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Charger : in numerous UPS systems because of the nature of the design a different battery charger is applied, this is more common on sub 60kVA UPS systems and is very common on small sub 3kVA items.
Battery : this is the energy storage area and is kept charged eith...
Rectifier : this part of the UPS converts the incoming alternating current (ac) supply to direct current (dc) and can offer charging current for the battery and also the supply requirements for the inverter.
Charger : in a number of UPS systems due to the nature of their design a different battery charger is applied, this is extremely common on small sub 3kVA models and is more common on sub 60kVA UPS systems.
Battery : this is the power storage section and is kept charged either by the rectifier or even a separate charger. Their storage capacity is generally displayed, as AH (ampere hour), which is the amount of amperes of current that the battery can supply for an hour. There will be a quantity of limiting factors depending upon the application, generally if the design calls for a small autonomy (period of time the battery will support its weight for), the batteries may be discharged to a degree, in the case of emergency lighting where there's a need for a autonomy the battery won't be permitted to release so much. These problems help to permit the maximum design life of the battery to be performed.
Inverter : this area of the Uninterruptible power supply provides an ac output to the weight which can be in phase with the insight mains supply. Due to the amount of conversions (ac to dc to ac) and the filtering involved it could be termed as a 'clean supply.'
Static Switch : this circuit is often as simple as an exchange or maybe more commonly using thyristors, its purpose would be to switch the load between the inverter and the power mains supply. In order that any switching between the two will undoubtedly be nearly seamless as has been mentioned before the output of the inverter is in phase with the power mains offer. This design means that if the inverter activities an overload condition, because of its very quickly over-current diagnosis tracks it will transfer force to the more resistant mains supply. An average example would be whenever a host stand is switched on, the inrush current, depending upon the size of your uninterruptible power supplies, could cause the transfer to the power mains offer, and once switched on the load will transfer back to the inverter giving the inverter has sufficient capacity to support the load. Also a fault on the inverter will cause the load to be transferred, again nearly seamlessly; it would be unusual for any loss in load to occur during these conditions.
Preservation Bypass : more typically present in UPS systems with a capacity of 6kVA or greater. The load is allowed by this arrangement to be moved under controlled conditions to the UPS and the utility mains to be shut down without damage. Normally completed for program UPS preservation or UPS repair.
External Maintenance Bypass : the installation of an maintenance bypass can allow the UPS to be removed/replaced without interruption to the load, also, if the true maintenance bypass is given from a different source it can allow load testing in the case of a significant UPS repair and/or checking of the independence under simulated load conditions while the site load will be recognized by the external maintenance bypass circuit. This could be used when allowing the UPS System to be bypassed onto standby diesel generator power. As an alternative, when batteries are changed and removed, it may only be achieved by placing the uniterruptible power supply into outside bypass.
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