Ampcontrol member company Austech has supplied Sulphur Hexafluoride (SF6) and Oxygen depletion systems for two substations in Western Sydney.
SF6 is used in high and medium voltage switchgear as an insulating medium, provides a risk of asphyxiation to site personnel in the event of a gas leak. The Austech system is designed to provide warning and evacuation alarms to site personnel in the event of an SF6 gas leak from gas filled plant or storage bottles. It also monitors oxygen depletion and provides warning and evacuation alarms when oxygen levels decrease.
The system consists of a fixed type, multipoint SF6 sampling system and iQguard Oxygen sensors with an integrated user configurable SF6 sampling panel and a local interrogation and monitoring panel with colour touch screens.
In addition, a remote interrogation panel was also supplied to monitor gas values and alarms remotely at the unmanned site. The remote interrogation panel includes a data logging facility and trending chart. Remote interrogation is possible through a colour touch screen and the system panel is connected using Ethernet communication through the fibre optic cable.
Austech provided a full integrated package including system design, complete system hardware, project management, design validation, training and commissioning services. As part of the package the customer was provided with comprehensive staged documentation including hardware and software design specifications, inspection and test plan, cable schedules, FAT, SAT and a training curriculum.
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