What is UPS?
An Uninterruptible Power Supply is a device connected between the power source and a load (computer, fan, TV, etc.) to ensure that electrical flow is not interrupted. It is also called uninterruptible power source, UPS or battery/flywheel backup. UPS systems devices Use batteries to keep the load running for a period of time after a power failure. UPS systems cannot be confused with standby generators which do not provide protection from a momentary power interruption, or which may result in a Momentary power interruption when it is switched into service, whether manually or automatically. UPS systems usually provide protection against power surges, brownouts and line noise as well.
What’s the usage of UPS?
Every UPS will supply power to load (such as a computer, fan, TV, lights or medical equipment) when mains power fails. It may also regulate the power and prevent the spikes, brownouts, interference and other unwanted problems from damaging the supported equipment.
How long can the UPS support for my equipment running?
As long as you want, providing you buy enough batteries and the charging system is up to it. After about eight hours it`s usually more cost-effective to buy a generator, with a short runtime UPS to bridge the generator start-up gap.
What`s lifetime of a UPS?
Most plug-in UPS are good for at least seven years. We`d advise you to change the batteries every twelve months to eighteen months.
What is called "Off-line UPS"?
In this type of UPS, the primary power source is line power from the main utility, and the secondary power source is the battery. The battery charger is using line power to charge the battery, and the battery and inverter are waiting "on standby" until they are needed. When the line power fails, the transfer switch changes to the secondary power source. When line power is restored, the UPS switches back.
What is called "Line Interactive UPS"?
Line Interactive UPS under normal condition smooth’s and to some degree regulates the input AC voltage by a filter and a tap-changing transformer. The bi-directional inverter/charger is always connected to the output of the UPS and uses a portion of AC power to keep the battery charged. When the input power fails, the transfer switch disconnects AC input and the battery/inverter provides output power. Its typical efficiency is 90-96%. This type is currently the most common design in 500 VA - 2000 VA power range.
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