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Uninterruptible power supply systems

A UPS system, or uninterruptible power supply – its full name – is design to provide near-instantaneous switching of power in the event of electrical equipment power failures.

Almost all businesses today have computers, servers, and other electronic equipment that require constant power. A power outage could have serious consequences for the business?

A single-phase UPS system protects your equipment that runs on normal AC power, known as single-phase current. This is sufficient for most home and office situations. But if your data center, factory, or plant has a 3-phase power supply, you will need a more powerful 3-phase UPS. Most major manufacturers offer both types of units with varying capacities. Be sure to discuss all of your requirements with a quoted expert.

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The UPS system can used to protect any mains or battery-powered equipment. And is typically use to protect telecommunications equipment, data center equipment, and personal computers. A power failure or interruption can have many consequences depending on the equipment used, and in extreme cases can cause injury or even loss of data, which can significantly affect business operations.

A UPS can also protect against power surges. And even surges that can cause some electronic equipment to malfunction or even fail completely.

What is the difference between a single-phase and a three-phase UPS?

A single-phase uninterruptible power supply is connected between the main power outlet and the equipment to be protected and protects against fluctuations in line voltage and problems such as surges, spikes, brownouts, and power outages.

A three-phase UPS provides protection and safety from the same problems as single-phase systems, except that three-phase systems have a higher voltage, on the order of 400 volts. The substation supplies three-phase power through three windings that are 120 degrees out of phase with each other.

A typical household receives single-phase power from only one winding. Whereas a factory or machine shop may receive full three-phase power.

UPS systems are generally categorize as mains, line-interactive, and standby:

On-line – On-line A double-conversion UPS is design to protect sensitive equipment. That may damaged or fail due to excessive power fluctuations. The output voltage and frequency are kept within tight limits regardless of the input signal.

Line-Interactive – UPSs in this category are able to maintain the output voltage. By automatically adding or subtracting turns using an autotransformer and various taps. At the same time, it can conserve valuable battery charge.

Standby – A standby UPS, sometimes referred to as an autonomous system, provides only basic protection for the equipment being protected. It provides surge protection and backup power when the input voltage drops below a certain level. It does not readily protect against extended power outages, and certainly not against all but the shortest outages.

Some manufacturers even offer a range of UPS systems that meet specific, stringent regulatory requirements for use. With certain equipment and patient support systems specific to hospitals and healthcare facilities.

Most manufacturers offer UPS systems ranging from 200kVA to 16kVA in a variety of configurations. Including desktop, tower, and rack systems, and some systems can equipped with additional batteries to extend runtime.

However you choose a UPS, make sure you carefully evaluate your power needs before purchasing a system, otherwise, you may find that the system you choose is not capable of fully protecting all your equipment for the expected period of time.

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