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NOJA Power NewsIssue 13 |
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Brazilian Intern Graduates & Joins NOJA Power Distributor |
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Bruno Kimura is an Electrical Engineering Graduate who has joined NOJA Power's Distributor in Brazil, Festimport Exportação Ltda. He is an exceptional young man who took it upon himself to make application for an internship with NOJA Power for six months in late 2005. He was successful with this application and in January 2006 he began a six month internship with NOJA Power. In his own words he states, “The six months whilst I had my first and memorable work experience was marked by the trust the company put on me, the incentive I was given in every task and the friendships I made.”
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During his internship he completed tasks like converting recloser control panel MMI strings from English to Portuguese. Today the control panel is available in Portuguese as a result. He then spent time on the production line and in the electronics laboratory where he assembled reclosers, manufactured cables and tested communications between modules. As a result of his Portuguese skills he also became an interface with our Brazil Distributor which provided his first introduction that lead to the full time job he has today. He then embarked on the major task of his internship and designed a new low voltage test bench as well as a 20kV high voltage test source. For both of these tasks his responsibility included research, design, manufacturing drawings, sourcing components and then overseeing the assembly and test of the finished products. The project was completed successfully. During Bruno's time in Australia he made many friends and those friendships will always exist. He then returned to Brazil to the University of Sao Paulo where he completed the final year of his Engineering Degree successfully and has now graduated as an Electrical Engineer. Because of his internship he made particular focus on the last part of his degree in power engineering. He has now joined the Festimport Exportação Ltda team to provide technical support for our Brazilian customers and is very well qualified to do so as a result of his internship. |
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NOJA Power Teams up to Supply PNG Power |
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NOJA Power was contracted by B&M Engineering to supply control panels for 800kW, 600kW, 250kW and 150kW diesel generators for Popondetta, Vanimo, Maprik and Finschhaffen Power Stations in Papua New Guinea. The PNG Power Specification called for voltage controlled overcurrent / earth fault, under voltage, loss of field or reactive power and reverse / low forward power protection with differential protection required for generators >500kW. Accordingly, the 600 and 800kW panels were fitted with Areva P343 protection relays and custom designed CT's to detect any imbalance arising from an internal generator fault. Since differential protection was not a requirement for the 250 and 150kW panels, they were supplied with Areva P342 relays. Terasaki TemPower2 ACB's were used in all cases to switch the generator onto the load bus. A Deep Sea Electronics Engine Control Module was integrated into the control panel to allow the generator to synchronise onto a live bus before connecting to it. For the smaller generator sets the DSE5510 also provided engine cranking and overspeed monitoring. |
To assist operators in quickly identifying the cause of any ACB or generator shutdown operations, the specification called for an engraved annunciator panel with a mix of coloured warning lights. Each annunciator had different modes of operation specified for alarm, warning and acknowledged states. In order to simplify sourcing future spare parts, the specification deliberately excluded PLC control resulting in lots of relay logic with more than a kilometre of 2.5mm2 control wire in each of the 6 panels. With their high mechanical operations and robust construction, Sprecher and Schuh CS4 control relays were selected to provide long life and trouble free operation. |
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