Real Witness Testing. Real DNO Experience.
Over the last 10 years, G99 Training has worked alongside many DNO witnesses during on-site witness testing across different areas of DNO control.
A Record of Real DNO Witness Experience.
We thought it may be helpful for both new customers and the authorities overseeing the ALOMCP scheme to see a sample of the DNO witnesses we have worked with.
The photographs on this page show real on-site witness testing work carried out during the last 10 years.
This is only a small sample of the witnesses we have worked with during that period, as we have calculated that we have been involved in well over 300 witness tests in different areas of DNO control.
Practical Witness Testing Across Different DNO Areas.
Years of field involvement working around live protection-testing and DNO witness environments.
Years of experience working around DNO witness tests.
A Small Sample From More Than a Decade of Field Work.
These photographs provide a visual record of some of the DNO witness testing environments we have worked in.
Experience Across Different Areas of DNO Control.
The photographs supplied include witness work associated with several different network areas and provide only a sample of the wider testing experience accumulated over the years.
Practical Testing in Front of the DNO Witness.
Exact requirements vary depending on the installation and network operator, but practical DNO witness testing centres around preparation, relay testing, verification and supporting evidence.
Site Preparation
Confirm the installation, protection equipment and testing arrangements are prepared for the witness visit.
Protection Testing
Carry out the relevant protection and relay tests using suitable professional test equipment.
DNO Witness
Required testing is observed by the DNO representative as part of the witness-testing process.
Evidence & Completion
Test results and associated evidence support the wider compliance and connection process.
Respecting Witness Privacy
We have permission to publish these photographs. However, we deliberately do not publish the individual's name in case they have since moved to a different role or position.
Prepare Your Site for the Witness Test.
If you need support with G99 witness testing, protection testing or preparation for an upcoming DNO witness visit, talk to G99 Training.
Tell us about the generation system, protection equipment and your upcoming witness requirements.
Contact G99 Training →