How does continuous monitoring work?
First, identify the asset and the sign of deterioration to watch for. Then place the appropriate sensor or measuring device. Measurements are recorded over time; thresholds or analysis results alert the maintenance team. Each alert leads to an on-site review and maintenance decision.
Earthing resistance and partial discharge in cable insulation are different measurements. No single device should be expected to monitor the whole energy infrastructure.
Which assets are monitored?
- Earthing loop: G-Check continuously monitors loop resistance from a panel and provides an alarm output when a set threshold is exceeded.
- Earth electrode: EMS separately monitors the resistance of up to three earth pits using the three-pole fall-of-potential method and sends data through RS485.
- Distributed earthing points: TJ1 measures loop resistance with a split-core sensor at configurable intervals. TJ1-A communicates over 4G; TJ1-B uses RS485.
- Cables and insulation: PDEye collects partial discharge signals through sensors for analysis on a central platform.
These devices do not measure the same physical quantity. G-Check and TJ1 monitor loop resistance at different locations; EMS measures electrode resistance. PDEye focuses on partial discharge, a sign of insulation defects.
Methods compared
| Need | Method | Technology |
|---|---|---|
| Monitor an earthing loop from a panel | Continuous loop resistance measurement and threshold alarm | G-Check |
| Monitor earth electrode resistance at pits | Three-pole measurement and control-system connection | EMS |
| Monitor loop resistance at distributed points | Split-core sensor measurement at configurable intervals | TJ1 |
| Monitor insulation on cables and other electrical assets | Sensor-based partial discharge data collection and analysis | PDEye |
The choice depends on earthing layout, the number of points, communications infrastructure and the type of asset.
Monitoring and maintenance
Measurement trends and alarm records help maintenance teams prioritize work. Monitoring does not replace periodic measurement and inspection required by the applicable rules or project.
For product details, see the brochures for G-Check, EMS, TJ1 and PDEye.
Who is it for?
Power facilities, manufacturing sites, data centres and infrastructure operators with many earthing points or critical cable routes may benefit from a monitoring plan. A site survey determines where devices should be placed.
Frequently asked questions
Does continuous monitoring replace periodic measurements and inspections?
No. It makes changes between inspections visible. Periodic measurements and inspections required by the project or applicable rules still continue.
Do G-Check, EMS and TJ1 measure the same value?
No. G-Check and TJ1 monitor loop resistance at different points and intervals; EMS measures earth electrode resistance with a three-pole method.
Is PDEye an earthing monitor?
No. PDEye monitors partial discharge activity, which can indicate insulation deterioration in cables and other electrical assets.