AC UPS:

Uninterruptible Power Supply

We provide innovative, well-engineered solutions that won’t let you down, from offline UPS battery power backup, to line-interactive UPS and sophisticated double-conversion online UPS power supply systems.

We have selected the extensive range of uninterrupted power supplies from RIELLO UPS in Italy. They’re one of the worldwide companies for single and multi-phase UPSs.Remember that we’re not simply resellers, We’re qualified engineers who can help you select the most appropriate systems for your needs. This includes ensuring you benefit from the latest innovations in reliability and efficiency while considering future requirements around flexibility and scalability.

Our qualified engineers have been advising New Zealand clients on UPS systems and installations since the early 1990s. Today our clients include medium to large industries, corporates and government departments.

Single or Three-phase UPS?

There are many aspects which affect the choice of module. Totally single-phase units are rarely available beyond 20 kVA, above this size it is usually necessary to use a three-phase input for the rectifier, even where the inverter output is single phase. When feeding this type of system via a generator it is important to remember that the bypass line will be single phase, demanding a higher current on one phase only. Larger units with three phases input/output are more easily distributed across generators and can also be used to feed single-phase loads, and with good load balancing, need not be oversized