Baur PD-TaD 80 User Manual page 69

PD-TaD 80
Power over Ethernet (PoE)
Power over Ethernet (PoE) is a process by which network-enabled devices can be supplied
with power via the Ethernet cable.
S
Stability of the dissipation factor
Change of the dissipation factor over time for a constant test voltage (Designation on the
display: SDTD).
The stability of the dissipation factor is determined on the basis of the standard deviation of
the dissipation factor during a voltage step.
System
All of the technical components that are connected to one another and related to one
another and which are regarded as a single unit with regard to their function.
V
VLF cable testing with parallel PD test
This method combines the statements of a PD test and VLF cable testing.
While the cable test shows whether a cable can withstand a load (e.g. 2x Uo) over a
specified test time, the PD test identifies and locates the PD activities in the cable insulation.
The simultaneous performance of VLF cable testing and the PD test reduces the test time for
cables that are in good condition.
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Glossary
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