ACB upgrade – 150 St Georges Terrace, Perth

150 St Georges Terrace is a 12-storey B-grade commercial office tower located in the heart of the Perth CBD. The site main switchboard was fitted with two ageing Federal Pacific air circuit breakers (‘ACBs’) which were at end-of-life. Infrared Services was engaged by the property manager to undertake a retrofit to modern Schneider Masterpact MTZ1 ACBs to ensure the ongoing reliability of the installation.

Initial measurements were undertaken and bus bar installation kits carefully custom-fabricated off site and in advance to minimise down-time during the upgrade. When fabrication was complete Infrared Services liaised with the network operator for an upstream isolation, removed the old ACBs and supplied and installed the replacement Schneider Masterpact ACBs. At the same time it was also necessary to provide temporary power to hospitality tenants located at the premises utilising a portable generator set.

Total down time to the site was under 7 hours, and the project value was approximately $36k, or less than 20% the cost of a complete switchboard replacement. The installation can now be relied upon to remain serviceable long into the future.

Before
After