Amplitudeand peakhold unit

FilterPersonalcomputer

DigitalPD pulsedisplay

CH2

CH1Amplifier

Int. calibrator

Quadripole

1000 pF

1 Ph230 V50 Hz

ACsupply

Py Sy

10 kVA0-230V/0-100 kV1 Ph, 50 Hz, test transformer

To CH1

For PD measurement

Test object

CouplingCapacitor

Quadopole

Calibrator

Test transformer

Digital StorageOscilloscope

PDGold®

Acquisition System

HV terminal

60 mm i8 mm thk

80 mm i8 mm thk

2 mmdepth

HV

10 mm diameter,polished sharp needle

Earthelectrode

Tip radius:100 µm

Perspexnon-metallic

chamber

HV

Perspexnon-metallic

chamber 10 mm diameter,polished sharp

needle

Earthelectrode

Transformeroil

Tip radius:100 µm

HV terminal

60 mm i8 mm thk

80 mm i8 mm thk

2 mmdepth

2 mmthk

needle

HV terminal

60 mm i8 mm thk

80 mm i12 mm thk

4 mmdepth

2 mm thkneedle

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