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How Do Uninterruptible Power Supplies Work?

Even with perfect preparation and the highest quality office fit out cabling, you cannot prevent power outages. These may come from issues in the grid or fuses and switches being tripped in the building’s power supply. If the power is interrupted for any of these reasons, it could cause severe damage to sensitive equipment like computers, industrial control systems, and servers. Uninterruptible power supplies are the best way to ensure constant and stable power gets to these pieces of equipment.

Power issues in office fit out cabling are not always just outages. Most office equipment expects the Australian standard of 230 volts at 50 Hertz for power. If the voltage drops below this (called a sag or brownout) or raises above (called a surge) there may be damage to sensitive equipment. There are also frequency changes which can cause issues. Uninterruptible power supplies aim to supplement or replace the mains power in these cases to keep equipment online.

There are a few different types of uninterruptible power supplies, depending on the sensitivity of the equipment and protection needs:

  • Standby systems – are only activated when an issue is detected, replacing the mains power with battery power. The DC power from the battery must be inverted to AC before being fed to the machines. Standby systems are the most basic and are used in entry-level and consumer equipment.
  • Line-interactive uninterruptible power supplies – a built-in transformer supplements slight fluctuations and engages the battery when power is lost. This is used for mid-range network equipment and office data systems.
  • Double conversion – power is passed through the battery at all times by being converted to DC then back to AC. This has zero switch-over time and gives the best protection for high-end server, data, and telecommunications equipment.

To learn more about adding uninterruptible power supplies to your office fit out cabling, visit GM Cabling Solutions.

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