查看“TammieLandreth998”的源代码

Charger : in a number of UPS systems due to the nature of these design a different battery charger is used, this is more common on sub 60kVA UPS systems and is extremely common on small sub 3kVA items. 

Battery : this is the energy storage area 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 needs for the inverter. 

Charger : in numerous UPS systems because of the character of their design a separate battery charger is employed, 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 either by the rectifier or even a separate charger. Their storage capacity is generally shown, as AH (ampere hour), which is the amount of amperes of current that the battery can supply for an hour. There will be a number of limiting factors dependant on the application, generally if the design calls for a short autonomy (length of time the battery will support its weight for), the batteries can be cleared to a degree, in the case of emergency lighting where there's a necessity for a autonomy the battery won't be permitted to discharge so far. These problems help to permit the maximum design life of the battery to be achieved. 

Inverter : an ac output is provided by this section of the Uninterruptible power supply to the weight that will be in phase with the input mains supply. Due to the number of conversions (ac to dc to ac) and the filtering involved it could be referred to as a 'clean supply.' 

Fixed Switch : this signal can be as simple as a relay or maybe more generally using thyristors, its function is always to move the weight between the application mains supply and the inverter. As has been previously mentioned the result of the inverter is in phase with the electricity mains offer to ensure that any switching between your two will undoubtedly be virtually seamless. This design ensures that if the inverter experiences an overload condition, because fast over-current detection circuits it will transfer the strain to the more tough mains supply. A typical example would be whenever a machine sheet is switched on, the inrush current, based upon the size of your uninterruptible power supplies, may cause the transfer to the power mains offer, and once switched on the load will transfer back to the inverter offering the inverter has sufficient ability to support the load. Also a mistake on the inverter may cause the load to be transferred, again almost seamlessly; it would be unusual for almost any loss of load to occur during these circumstances. 

Maintenance Bypass : more on average within UPS systems with a capacity of 6kVA or greater. This design allows the strain to be moved under controlled conditions to the UPS and the power mains to be turn off without loss. Usually completed for program UPS maintenance or UPS restore. 

External Maintenance Bypass : the installing 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 source it can allow load screening in the case of a major UPS restoration and/or checking of the independence under simulated load situations while the site load is being supported by the external maintenance bypass circuit. When letting the UPS System to be bypassed onto standby diesel generator power this could be used. Instead, when batteries are removed and replaced, it may only be performed by placing the uniterruptible power into additional bypass. [http://www.prestonhire.com.au/ acrow prop hire price article]