Tegg Ultrasonic

 

Four of our very own engineers have completed their TEGG training, covering everything from Ultrasonic Inspection and Thermography to comprehensive mains analysis. Both Rob Corker and Tom Vast had already completed the initial training, travelling overseas to America, but as we all know, the electrical testing realm is an ever-evolving industry, so they took part in the refresher course, updating their existing knowledge. While Technical Manager Robert Walsh, and TEGG Service Electrical Safety Consultant Chris Gray, embarked on a journey to become qualified to use the software, now fully trained to tackle some of the most common electrical power issues troubling sites across the country. Whether it be voltage sags and swells and distorted harmonics, or transients and current unbalance, the Lantei team is fully equipped to tackle these issues.

The Ultraprobe 15,000

UE Systems provided the onsite training, covering the Ultraprobe 15,000 Touch Digital Inspection System, the team got some hands-on experience, discovering the countless features from on board frequency analysis and non-contact infrared temperature measurement, to the tri-sonic scanning and stethoscope modules. Having learnt about the system itself, it was time to create a database, take a baseline and readings, download data to DMS and create a report, an integral part of providing our testing services to our clients. It is one thing to know the technology thoroughly and be competent when collecting information, but knowing what to do with this data, how to upload it to the portal, and translate into a compliance report is equally significant. There is a time and place for using ultrasound testing, and throughout the comprehensive training course, our employees evaluated the benefits of using the software in varied environments. This is essential to our success in the industry, as we work within so many sectors in such drastically different settings. Whether we are testing in the manufacturing, education, healthcare or property management sector, our engineers are equipped with the tools to cause no operational downtime, while ensuring electrical compliance. Concluding the probe into ultrasound software, they had the chance to review the overall goals of this non-intrusive method, allowing us to maximise the benefits to the end user.

Non-Intrusive Thermography

As an accredited Authorised Training Organisation for the British Institute of Non-Destructive Testing, Infrared Training Center covered everything we needed to know about infrared inspections. Much like with ultrasonic testing, the environment dictates how the camera is operated. The diverse conditions of each site mean we must be able to adapt dependant on the distance, humidity, and air temperature. This paired with the ultrasound software, has enabled our engineers to adopt this non-intrusive approach to electrical testing, accommodating all industries. Developing knowledge from using the camera in simulated labs, to identifying potential error sources, the team progressed to reporting the results. Regarding heat measurement, the difference between contact and non-contact testing was examined, looking into how radiation is converted to temperature, the different methods and how this impacts the test result. Many factors come into play when analysing the temperature spikes, including heat transfer, conduction, convection, and radiation.

AEMC 5402 Mains Analyser

The meter training was broken down into four segments, each integral aspects of the functionality, providing a snapshot analysis of the mains.

This software identifies the presence of voltage imbalance, calculating a formula to determine safe parameters of voltage differences between the phases of a three-phase system, ensuring this does not differ by more than 4%. Motors in particular would not be reliable if operating under unbalanced voltages, potentially overheating. Using this meter alongside the non-intrusive thermal testing, safeguards against excessive heat. Everything from the supply to the building, loads within facilities, connection issues, and transformer problems are analysed at this stage. The team learnt how to test for current imbalance, ascertain readings, and key the information into the meter software, which proceeds to determine a formula, flagging issues likely to be caused by single phase loads. For instance, unbalanced current across L1, L2, and L3, diminishes the efficiency of the electrical system, potentially resulting in torque pulsation, and mechanical stress. Rebalancing using phase conductors and limiting the current running through neutral is key to both financial savings and electrical safety throughout the site, boosting performance, and increasing the lifespan of three-phase motors. AC current harmonics were also analysed, learning how to pinpoint signs of distortion, and if discovered, how to rectify the issue. If present in the results, it was then discussed how filters can be applied to regain balance.  The final aspect of the meter is the millivolt drop test, which identifies contact resistance or bad connections. Most commonly between load and lug, or breaker and busbar, the meter will specify the level of millivolt that drops out of the connection. The extensive list of features within the meter, truly demonstrate how integral this tool is to the TEGG testing process, and training programme.

 

The three pieces of software work harmoniously together to form a perfect solution. When paired with traditional testing methods, we truly believe this approach will revolutionise the compliance industry. Want to know more about TEGG and the endless benefits? Click here to discover how we can help you.

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