NOJA Power News

Issue 12

EEA Exhibition Conference 2007

The Electricity Engineers' Association (EEA) of New Zealand hosted its annual Conference + Trade Exhibition. The theme this year was “Engineering our Future” and Tony Stacey, NOJA Power Sales Director, attended to represent the company.

EEA Exhibition

Over 600 delegates, visitors and exhibitors attended the three day event and 45 presentations were given.

The NOJA Power product line was exhibited and Sales Director Tony Stacey manned the stand in conjunction with the local distributor. “A successful and productive event”, he commented.

The presentations were all informative and well delivered and the judges commented on the high standard of the papers.

Tony Stacey delivered his paper “Application of Advances in Technology to Improve Network Performance and Better Protection Grading” and was awarded Best Paper for a non-member.

ETSA Utilities Award 5 Year Supply Contract

ETSA Utilities has awarded NOJA Power Switchgear Pty Ltd the period supply contract, for the South Australian distribution networks 11 kV Pole Mounted, Line Reclosers Requirements. Serving approximately 782,000 residential and business Customers, through approximately 85,000 kilometres of Powerlines, ETSA Utilities is one of the Largest Distributors in the Australian National Electricity Market.

The NOJA Power OSM15 Recloser was selected by ETSA Utilities after a thorough engineering evaluation and selection process. Reliability and Performance measures were key evaluation criteria applied by ETSA Utilities' evaluating Engineers. Desirable features offered in the NOJA OSM Recloser satisfying stringent requirements of the ETSA Utilities Engineers include a high level of safety provided by the Arc Fault Controlled and Vented, Solid Dielectric Insulated design, and the Robust 30,000 Full Load operations offered by the NOJA OSM Recloser. The OSM Reclosers will integrate to ETSA Utilities' comprehensive network control and SCADA system via the DNP3 remote communications facility, provided within the RC01ES Control Cubicle. Some customized features were engineered into the OSM Recloser and RC01ES design for ease of implementation into the ETSA Utilities' working procedures.

NOJA Power are providing a number of value added services packaging a complete Recloser, incorporating ETSA Utilities Surge Arrester and Accessory requirements as well as Specific Mounting hardware arrangements which significantly reduce workshop assembly and testing hours for their staff.

Planning for the future: Water Matters

NOJA Power has recently delivered three Main Switchboards to Australian Infrastructure Alliance, Water Matters, for the Cleveland Bay Wastewater Treatment facility located in Townsville. The Water Matters Alliance is composed of a number of different organisations, all working together under the Water Matters umbrella to complete significant infrastructure upgrades in the North Queensland region.

Alliance partners Abigroup Contractors, Aquatec Maxcon, Citiwater (Townsville City Council), GHD Pty Ltd and United Group Infrastructure will deliver a state-of-the-art wastewater management network, to produce recycled water, that can be reused in the community and help protect the environment for future generations. The upgrade to the Cleveland Bay Wastewater Treatment Facility will see it become the largest treatment plant of its type in the southern hemisphere.

Main Switchboard - Water Matters

The three switchboards manufactured by NOJA featured a PLC controlled Automatic Transfer System to switch load to a backup generator in the event of loss of mains supply. Terasaki Tempower 2 ACB's provide the necessary mechanical interlock to ensure that only one or another of the supplies is on at any one time, they also provide the position status indication necessary for provision of an electrical interlock for added security.

The switchboards incorporated Arc Fault Detection to ensure instantaneous isolation via the upstream 11kV breaker in the event of an arc fault. A mix of single and bi-directional sensors provided coverage throughout the incomer tiers for both Mains and Generator supply. One of the switchboards catered for a future Biogas co-generation facility by including provision for Ergon Energy metering and remote connection / disconnection of the generator. The tier containing the generator supply also included arc fault detection capability.

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