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high-voltage switchgears electrical switchgear ndir sensor factorys

Partial Discharge Detection of High Voltage Switchgear ...· PDF fileelectromagnetic waves cause electrical resonance in GIS or ultra high voltage switchgear, and partial discharge can be found on the inside switchboard, as they are detected by UHF sensor. 2.3 The principles of detection and electromagnetic emissions by partial discharge Figure 1 shows a schematic of the occurrence of a partial dis-charge in GIS.

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