April 2002Maintenance, Test & Measurement, Calibration
The need to monitor events in the power generation environment is critical for maintenance and predictive diagnostics where accurate and high-speed discrimination between faults in a sequence of events can lead to fast recovery and repair.
Generating sets are generally the back-up supply or supplementary supply, which makes it crucial that they are reliable and that outages are resolved quickly. However, only a handful of manufacturers have managed to develop appropriate technology for the recording of these high-speed events to within the resolution generally required for generating sets. This can be a costly exercise to implement however the cost of downtime due to power outages most often outweighs the implementation costs in the short term.
A typical application for OMNILOG is the breaker monitoring on a generating set. In a shunt trip control system, series and parallel chains of contact require monitoring. Using Omniflex interface boards OMNILOG accomplishes this task with ease and every contact in the system can be monitored and reported on.
Omniflex designed and manufactured the OMNILOG sequential events recorder for a cost-effective implementation. The instrument is capable of monitoring over 128 digital inputs (potential free standard), time-stamping them at source to a resolution of 4 ms (1 ms if less than 32 inputs). OMNILOG's big brother SER260 handles 4064 inputs with a resolution of better than 1 ms and caters for larger scale applications with high-end reporting systems.
The very high levels of electrical noise found in generating systems and substations need to be filtered properly in order to ensure that the events recorder records only true events and not spurious signals. The events recorder is often complemented in its application with OMNI-16 enunciators, which provide visual indication of alarms and the first up-alarm while the events recorder captures all events and logs them to an integral printer.
The OMNILOG events recorder consists of a rack with up to four input cards each handling 32. Each 32-channel input card in the system provides 1500 V r.m.s. isolation between the field and the backplane, with 600 V r.m.s. isolation between channels.
Generating sets have a need to monitor almost 100 digital contacts to within 4 ms in order to determine what may have caused a line or generator fault. The information that the SER range of recorders gather in hundreds of installations around South Africa is invaluable in determining the cause of faults and therefore speeds up the repair and restoration process. Without the information provided by such recorders, maintenance engineers could only guess at the nature and sequence of faults.
Other products in use in power and substations are the Maxiflex remote I/O system and the Omni-16 alarm enunciator range. Both product ranges are ruggedised for the harsh electrical conditions found in these environments.
No power, no coverage, no problem Omniflex Remote Monitoring Specialists
Industrial Wireless
Remote monitoring expert, Omniflex has delivered a remote monitoring and control solution for an impressed current cathodic protection control system, aiding local authorities in Queensland, Australia in the essential maintenance of roadside culverts.
Read more...Smart ICCP monitoring for safer tank storage Omniflex Remote Monitoring Specialists
Industrial Wireless
Cathodic protection is critical for combatting corrosion in oil and gas infrastructure. Omniflex explores how to manage CP systems in hazardous and hard-to-reach areas.
Read more...When SCADA meets the cloud Omniflex Remote Monitoring Specialists
SCADA/HMI
Engineers are faced with the challenge of unifying legacy SCADA systems with modern, IoT-based data platforms. The trouble is, when hardware from multiple manufacturers and generations are all used in the same system, compatibility becomes an issue
Read more...Safety-critical fibre optic systems in mining Omniflex Remote Monitoring Specialists
Enclosures, Cabling & Connectors
Omniflex highlights the importance of fibre optic technology in in enabling systems in the mining industry to transmit shutdown commands reliably over tens of kilometres and verify that they have been executed.
Read more...The keys to successful nuclear decommissioning Omniflex Remote Monitoring Specialists
Industrial Wireless
Remote monitoring specialist, Omniflex has published its latest sector overview exploring the challenges of maintaining critical alarm visibility and radiation monitoring during nuclear decommissioning.
Read more...Upgrading radiological surveillance systems in nuclear facilities Omniflex Remote Monitoring Specialists
Fieldbus & Industrial Networking
Nuclear plant operators face an uncomfortable reality. Many of the control and monitoring systems still in use today were never designed to support the full operational lifespan of the facilities they serve.
Read more...Wireless radiation monitoring for nuclear defence facilities Omniflex Remote Monitoring Specialists
Industrial Wireless
Gary Bradshaw, director of radiation monitoring specialist Omniflex, discusses why sitewide radiation and alarm monitoring remains one of the most complex challenges in defence environments, and how experience-led system design is critical to maintaining safety and resilience over the long term.
Read more...Keeping lifting equipment safe and securely on track
Maintenance, Test & Measurement, Calibration
In the hustle and bustle of mining production, the focus on the servicing of lifting equipment can unintentionally be sidelined. This situation can easily be avoided with a customised Konecranes Service Agreement that offers a comprehensive and systematic approach to asset management.
Read more...Tablet oscilloscope Vepac Electronics
Maintenance, Test & Measurement, Calibration
The PeakTech 1212 is a new, innovative oscilloscope designed to resemble a standard tablet in size and form. This tablet oscilloscope allows users to record any common measurement quantity and type, just like a desktop oscilloscope.
Read more...Powerful test controller
Maintenance, Test & Measurement, Calibration
XJTAG is launching the XJLink-PF20, brings the same dependability and robustness to a new 4-TAP two-port configuration, and offering both functional and JTAG boundary scan testing with the XJTAG testing suite’s long-established power and control.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version