There are a lot of different ways you can design your AMETEK Solidstate Controls Uninterruptible Power Supply (UPS) system to back up your critical loads. We’ve been helping you design the system that is best for your facility and loads for over 60 years. For the most robust and reliable workhorse around, we recommend a dual parallel redundant UPS system.
This setup starts with two industrial UPS systems that are the same model and from the same manufacturer, which ensures the logic and controls programmed between the two function as designed. Having two connected systems keeps your critical loads online through any outage.
What happens if one AC Input fails? If there is a primary AC supply failure, the rectifier is no longer in operation and will go on battery operation. Since the inverter doesn’t care where its power comes from, it will continue to supply to the load circuit and continue to run in parallel with the other system.
What happens if one battery is depleted or fails? The static switch for the failed UPS system will turn off, but the other UPS will continue to supply the load circuits without any issues since it is still a full kVA system. This also enables one whole system to be taken out of service for maintenance, repairs or even replace it without any impact on the connected load.
What happens if both inverters fail? If both inverters fail in this design, the static switch will change the power source to the bypass supply without interruption. This will ensure the critical load circuits remain energized.
A dual parallel redundant UPS system adds an extra level of security that your load is covered no matter what and offers additional flexibility for maintenance and more. To learn more about if a dual parallel redundant UPS is right for you, contact us.