Glossary
PD-TaD 80
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822-188-3
A
Anti-corona protection
Anti-corona hoods are used to protect against corona discharges at the terminations
C
Change of the dissipation factor between successive steps
Change of the dissipation factor between pre-defined successive voltage steps (Designation
on the display:
TD)
Connection point (near end)
The connection point or the near end represents the end point of the test object to which the
PD-TaD 80 is connected.
D
Dissipation factor, dielectric dissipation factor
Abbreviation: tan
Tangent of the dissipation angle - amount of the ratio between the ideal capacitive current
and the real total current. The difference between these two values is determined by the
ohmic dissipation current and various different polarisation mechanisms.
The greater the dissipation angle is, the higher the dielectric dissipation is.
F
Far end
The far end represents the end point of the test object opposite the connection point.
N
Near end (connection point)
The connection point or the near end represents the end point of the test object to which the
PD-TaD 80 is connected.
P
Partial discharge (PD)
Electrical discharge that only partially bridges the insulation between conductors (see
International Electrical Dictionary of IEC).
Partial discharge measurement
The PD test identifies and pinpoints PD activities in the cable insulation.
21
G
LOSSARY