Static Bypass switches are used to bypass the UPS normal operation, in cases of high inrush or fault conditions. Manual bypass switches are an added benefit to allow service and isolation for safety purposes. Correctly designed systems should enable these operations to be performed without loss of power to the load.

It is a common characteristic of an Online UPS. In effect, running on bypass the circumvents the UPS (i.e. rectifier, batteries, and inverter) and ensures power continuity while the UPS is fixed or swapped out. This is known as a ‘safe failure to mains’ and occurs for various reasons, such as a fault within the UPS or an overload (short ...

In addition, external maintenance bypass shouldn’t be mistaken for the static bypass switch in online UPS, which is a safety function in case of fault or failure with the uninterruptible power supply itself. Note that some external maintenance bypasses do incorporate an automatic transfer function which acts in the same way as a static bypass ...

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In addition, ATSs protect against short circuits and offer the ability to switch output power connections on and off remotely over a network. The ‘A’ and ‘B’ power sources feeding an Automatic Transfer Switch can be configured in a variety of combinations: ‘A’ supplied from the output of the UPS and ‘B’ from the mains supply

Manual maintenance bypass switch . Multi Pass is a manual bypass that ensures connected devices transfer to mains power if there is a UPS fault or it is switched off for maintenance. Available for rack or wall installations (16A rack; 10A and …

Capability for total isolation for UPS maintenance, with no disturbance to the load. Greatly reduced cost and size when compared to other systems using ‘Key interlocking.’ Totally safe and user friendly, simple switching sequence, no risk of back-feeding UPS.

location of the static bypass module(s) within the overall UPS system, and the electrical rating of the electronic switching components. • Centralised UPS Bypass This approach has a single common static bypass switch located in a separate cabinet, that is rated for the required capacity of the UPS system in an N or N+1 configuration as required.

In the event of a UPS fault, the static bypass switch automatically connects the load to the mains supply, bypassing the rectifier, batteries, and inverter. Having to transfer to mains supply isn’t ideal as the power won’t be filtered or conditioned as is usually the case with an online double-conversion UPS, but it does enable equipment to ...

Same UPS and Battery cabinet Look&Feel; It can parallel up to 3 UPS units; Simplified installation; Hot-swap connection for each UPS; The manual bypass switch is protected under the plastic front cover; Up to 3 Sentinel Duals can be operated in parallel in either capacity or N+1 redundant configuration offering increased reliability for ...