Partial Discharge Measurement (GIS)

Partial discharge measurement is one of the most important tools for GIS insulation condition assessment. Partial discharge (PD) in gas insulated switchgear is a leading indicator that a fault is going to occur and immediate action needs to be taken. A GIS failure would be a calamity. PD in GIS can be caused by particles floating in the gas insulation, or loose or broken components such as a piece of metal shaving that gets too close to a conductor. PD can occur in solid, gas or liquid medium and PD voltages vary depending on the insulation material.

Expert recommends

UHF 800

Our portable, easy-to-use UHF 800 system performs sensitive offline and online partial discharge (PD) measurement and analysis in the ultra-high frequency (UHF) range from 100 to 2000 MHz on gas-insulated switchgear (GIS) and gas-insulated lines (GIL). This ultra-high frequency partial discharge testing system is used for insulation condition assessment and insulation defect detection in noisy testing environments – especially during on-site commissioning (acceptance testing) and troubleshooting.

UHF 800
Ultra-high frequency partial discharge measurement and analysis system
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Benefits of this solution

Easy PD measurement connections

The UHF 800 data acquisition device includes two robust input channels, which allow safe and easy fiber optic connections to the system’s MCU2 master control unit as well as to additional data acquisition devices.

Broad UHF PD measurement range

The UHF 800 measurement system ensures very sensitive PD measurements in the UHF range from 100 to 2000 MHz. Using the Spectrum Evaluation feature and adjustable measurement filters, operators can easily select the best signal-to-noise ratio for sensitive PD measurements and reliable PD detection in the testing environment.

Synchronous, scalable UHF PD testing system

The UHF 800 PD measurement and analysis system can be easily expanded by connecting several UHF 800 data acquisition devices for synchronous, multi-channel PD measurements on gas-insulated switchgear (GIS), gas-insulated lines (GIL), oil-filled transformers and HV power cable terminations. These devices are connected via daisy chain with fiber optic cables to the MCU2 master control unit.

Flexible, time-saving measurement and analysis software

The UHF 800 is used together with our MPD Suite software, which includes the latest, time-saving PD measurement and analysis functions, including recording and replay of PD measurements, an easily adjustable measurement frequency range, user-definable testing profiles and customized reporting.

Literature
OMICRON-Magazine-Article-01-2019-Optimized-Testing-ENU.pdf (1 MB)
Optimized-substation-asset-testing-brochure-ENU.pdf (14 MB)
UHF-800-Brochure-ENU.pdf (2 MB)
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Videos

Sensitive partial discharge testing on gas-insulated switchgear with UHF 800

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