Partial Discharge (PD) – “Localized dielectric breakdown of a small portion of a solid or fluid electrical insulation system under high voltage stress, which does not bridge the space between two conductors. While a corona discharge is usually revealed by a relatively steady glow or brush discharge in air, partial discharges within a solid insulation system are not visible.”
IEC 60270 – partial discharge measurements – is applicable to the measurement of partial discharge which occurs in electrical apparatus, systems, and components when tested with DC voltage or AC voltage up to 400 Hz.
Basic Test Equipment Requirements:
Digital Partial Discharge
Analogue Partial discharge Detector
Partial Discharge Calibrator
Measuring Impedance / Input Unit
High Current Input Unit
Non-PD Test Transformer
Motor-Driven Contact Type Voltage Regulator
Motor-Driven Column Type Voltage Regulator
Non-PD Coupling Capacitor
Intermediate Transformer
Non-PD Capacitive Voltage Divider
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