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UPS Solutions
THE ONLY WAY IS UPS!
An Uninterruptible Power Supply (UPS) is to your server what a parachute is to a fighter pilot! The job of a UPS is to prevent sudden interruptions of the power supply. It is crucial for a network server to have a UPS, so that valuable data is protected against fluctuations in the mains power supply, or even a complete power failure. The UPS smoothes out bumps in the mains power supply and, if there is a power cut, it uses a battery backup to keep the system alive long enough to shut everything down properly. It works by using a static inverter to take energy stored in a battery and feed it through as an AC mains voltage supply.
LINE INTERACTIVE UPS
The two basic types of UPS have led to a hybrid design that attempts to offer some of the advantages of both. Line Interactive UPS is a name used to describe some of these hybrids. The Line Interactive UPS (PowerPal) operates exactly as the name suggests, by interacting with mains supply to provide a steady voltage and protection against power outages. The voltage boost circuits compensate for ‘Brown Outs' without having to use the battery. The inverter design is reversible, so that the inverter functions as a battery charger when the mains power supply is present, and as a generator of the mains voltage if the supply fails. The line interactive UPS can also smooth the mains power to regulate the voltage supply, thus protecting the sensitive loads.
ON-LINE UPS
These are usually preferable for systems where severe ‘Brown Outs' or sudden high voltages are common. This is because it can provide better regulation and conditioning of the mains supply than an Off-Line UPS. An Off-Line unit would resort to battery power in circumstances where an On-Line unit would not need to. Some On-Line units can maintain full output to the load, even at input voltages as low as 100 Volts. So, if extreme input voltages are common in your utility supply, an On-Line unit would be more suitable because it would be more likely to cope with a complete mains power fluctuations and failure.
