The effect of a power failure in a data center can be disastrous. So great care is taken to make sure that the very best back-up power scheme is in place. A reliable and efficient uninterruptible power supply (UPS) is a mainstay of such as scheme. Once the UPS is installed, however, it becomes a focus of reliability – for what use is it if it fails just when it is needed? For this reason, the most critical loads must be protected by the very best UPS design.
In ABB’s range of modular UPSs, each UPS module has all the hardware and software needed for autonomous operation – rectifier, inverter, battery converter, static bypass switch, back-feed protection, control logic, display, and mimic diagram for monitoring and control. With all the critical components distributed between individual units, potential single points of failure are eliminated.
If redundancy is provided for, there are more modules than are needed to supply the critical load. In a redundant system, all modules are active and share the load equally. Should one module fail, the remaining modules take over the load smoothly. The system is fault tolerant and there are no single points of failure. ABB calls this modular approach decentralized parallel architecture (DPA). DPA not only provides the best availability, but also the best serviceability, scalability and flexibility. Taken together, these features all deliver a low total cost of ownership (TCO).
As UPS power requirements change – if a data center is expanded, say – modularity makes it really easy to add modules and increase the power capabilities. You don’t have to overspecify the initial configuration to cater for future expansion, you just add modules when needed. This means that you only cable, power and cool what you need. Power consumption is a topic of great concern for most operators and the energy savings made by the modular approach over the service life of the UPS are substantial.
A modular system removes
this potentially dangerous situation. Should a module fail at
AEGON, the engineer would be onsite a mere 10 – 15 minutes
swapping out the faulty module for a fully functioning unit.
The faulty one can later be examined and repaired at leisure in
Newave’s partner workshop, which is a risk free environment.