What is a UPS Power Supply for Computers & Servers? | UPS Systems
What Does UPS for Computers Stand For? In com...
A bypass switch is a non-essential addition to an uninterruptible power supply system that, while not integral to UPS operation, is definitely useful in the event of maintenance or repair. The core items you need in order to be protected in the event of power failure are a UPS and a battery to supply the power, under standard operation this should be all that is required. However, if there is a fault or you need to remove a unit for repair, a bypass switch ensures that power continuity is maintained in the event of a failure.
There are two main types of bypass switch that serve similar but distinct functions. These are the static bypass switch and the external maintenance bypass switch.
These are nearly always part of the UPS’ internal circuitry, with an external switch in case you need to manually invoke it. This isn’t ideal for repairing purposes as the bulk of the UPS is still connected to the power but is a great way to protect from inverter failure.
A bypass switch is considered non-essential as the system will function without one, but the benefits of having a bypass switch is considerable. Without a maintenance bypass switch, the only way to repair or service your UPS system is to shutdown the power completely and can lead to a sustained period of downtime. If you’re working in a mission-critical environment, any period of downtime can have dire consequences and having a bypass switch is almost as important as having a UPS in the first place.
If your system comes with a static UPS switch it will be clearly labelled on the product description, it general comes as standard with an on-line UPS but it’s worth making sure.
A maintenance bypass switch of the external variety will need to be bought separately in most instances and fitted by one of our technicians. If your systems are mission-critical, we will likely advice fitting an external switch when you first purchase your UPS system and which product is the best fit for your needs.
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