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| - | Charger : in numerous UPS systems as a result of character of these design another battery charger is applied, this is more common on sub 60kVA UPS systems and is extremely common on small sub 3kVA devices.
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| - | Battery : this is actually the power storage section and is kept charged eith...
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| - | Rectifier : this section 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.
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| - | Charger : in several UPS systems due to the character of these design another battery charger is applied, this is more common on sub 60kVA UPS systems and is very common on small sub 3kVA units.
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| - | Battery : this is the energy storage section and is kept charged either by the rectifier or a separate charger. Its storage capacity is generally displayed, as AH (ampere hour), which is how many amperes of current that the battery can supply for an hour. There will be an amount of limiting factors dependant on the application, generally if the design calls for a small autonomy (length of time the battery will support its load for), the batteries may be discharged to a level, in the case of emergency lighting where there's a necessity for a autonomy the battery won't be allowed to discharge therefore far. These circumstances help to allow the maximum design life of the battery to be achieved.
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| - | Inverter : this portion of the Uninterruptible power supply provides an ac output to the weight that is in phase with the insight mains supply. Because of the quantity of conversions (ac to dc to ac) and the filtering involved it may be referred to as a 'clean supply.'
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| - | Fixed Switch : this world is often as simple as an exchange or maybe more frequently using thyristors, its goal is always to move the load between the application mains supply and the inverter. As has been previously mentioned the result of the inverter is in phase with the power mains offer so that any switching between the two will undoubtedly be almost seamless. This arrangement means that if the inverter activities an overload condition, because of its extremely fast over-current discovery circuits it will transfer force to the more resilient mains supply. An average example would be each time a host tray is switched on, the inrush current, based upon the size of your uninterruptible power supplies, may cause the transfer to the utility mains offer, and once switched on the load may transfer back to the inverter providing the inverter has sufficient capacity to support the load. Also a mistake on the inverter will cause the load to be moved, again essentially seamlessly; it would be unusual for just about any loss in load to occur during these circumstances.
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| - | Preservation Bypass : more typically within UPS systems with a volume of 6kVA or greater. This arrangement allows the strain to be moved under controlled conditions to the power mains and the UPS to be shut down without damage. Generally completed for routine UPS maintenance or UPS repair.
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| - | External Maintenance Bypass : the installing an maintenance bypass can allow the UPS to be removed/replaced without interruption to the load, also, if the actual maintenance bypass is given from another source it can allow load screening in the case of a major UPS repair and/or checking of the independence under simulated load problems while the site load will be supported by the external maintenance bypass circuit. When letting the UPS System to be bypassed onto standby diesel generator power this is often used. As an alternative, when batteries are removed and replaced, it may only be done by putting the uniterruptible power supply into outer bypass.
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