Index.php

From Pokelibrary

Charger : in numerous UPS systems as a result of character of their design another battery charger is used, this is more common on sub 60kVA UPS systems and is extremely common on small sub 3kVA devices.

Battery : this is the power storage section and is kept charged eith...

Rectifier : this element of the UPS converts the incoming alternating current (ac) supply to direct current (dc) and can provide 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 the design a separate battery charger is used, this is more common on sub 60kVA UPS systems and is very common on small sub 3kVA devices.

Battery : this is the energy storage section and is kept charged possibly by the rectifier or perhaps a separate charger. As AH (ampere hour), which is the number of amperes of current that the battery can supply for an hour, Its storage capacity is usually displayed. There will be an amount of limiting facets based upon the application, typically if the design calls for a small autonomy (length of time the battery will support its weight for), the batteries could be discharged to a level, in the case of emergency lighting where there is a necessity for a autonomy the battery will not be permitted to release so much. These problems help permit the optimum design life of the battery to be achieved.

Inverter : an ac output is provided by this section of the Uninterruptible power supply to the load which is in phase with the insight mains supply. Due to the number of conversions (ac to dc to ac) and the filter involved it may be known as a 'clean source.'

Fixed Switch : this circuit is often as simple as a relay or more generally using thyristors, its goal is always to change the load between the utility mains supply and the inverter. As has been mentioned before the production of the inverter is in phase with the electricity mains present to ensure that any switching involving the two is going to be almost seamless. This design means that if the inverter experiences an overload condition, because of its fast over-current diagnosis circuits it'll transfer the strain to the more strong mains supply. An average example would be each time a server rack is switched on, the inrush current, based upon the size of one's uninterruptible power supplies, could cause the transfer to the energy mains supply, and after switched on the load will transfer back to the inverter providing the inverter has sufficient capacity to support the load. Also a fault on the inverter can cause the load to be moved, again nearly seamlessly; it would be unusual for any loss of load that occurs during these circumstances.

Preservation Bypass : more generally within UPS systems with a capacity of 6kVA or greater. This arrangement allows the load to be moved under controlled conditions to the UPS and the utility mains to be power down without damage. Generally completed for routine UPS maintenance or UPS repair.

External Maintenance Bypass : the installation of an maintenance bypass can allow the UPS to be removed/replaced without disturbance to the load, also, if the true maintenance bypass is given from a separate supply it can allow load testing in the case of a major UPS fix and/or checking of the independence under simulated load situations while the site load will be supported 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 replaced and removed, it can only be done by putting the uniterruptible power into outer bypass.