Data
74
EDS460-490_D00085_01_M_XXEN/02.2016
8.4 Response sensitivity characteristics
The type of distribution system, system voltage, system frequency, leakage ca-
pacitance and locating current all affect the EDS system's response sensitivity
.
The value of the locating current can be set at the IRDH575
insulation monitoring device and at the PGH… locating
current injector. Resulting from the type of supply system,
the real locating current in AC systems is lower than the
setting. The reduction factor is 0.5 in AC systems and 0.67 in
3AC systems.
For application in AC and 3AC systems, the response
value at the EDS… has to be set as follows:
locating current EDS response value
10 mA EDS460/490 < 5 mA
1 mA EDS461/491 < 0.5 mA
For setting the response value refer to „Settings menu 2:
Channel“ on page 51.
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