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Operation
37
EDS309x_D00012_03_M_XXEN/11.2014
6.7.1.2
Standard display for EDS measurement (
I
Δ
L
) with cable in the clamp
The display is indicating a measured fault current
I
Δ
L
of 3 mA. A measurement in progress is indicated
by the change in the polarity of the measuring pulse (
)
with a pause (- - -) in between.
Note that only half the magnitude of the locating current
I
L
generated by the PGH18… in AC systems
is indicated by EDS195P. The half-wave rectification used in the PGH18… reduces the value indicat-
ed in AC systems to 50 %, in 3AC systems to 67 %.
6.7.1.3
Standard display for measuring faults or pauses between changes in polarity of the
measuring pulse
When no measurement is possible due to low frequency residual currents or because the measuring
clamp is not being held still, the display permanently indicates a pause (- - -) at the top right corner.
During the evaluation of the measurement the display indicates a pause (- - -) for a short time only.
6.7.2
RCM measurement (
I
Δ
n
)
6.7.2.1
Standard display for RCM measurement (
I
Δ
n
) with cable in the clamp
The display is indicating the measured residual current
I
Δ
n
of 16 mA.
The residual current response value set is 100 mA.
The following display appears if menu item "2.Settings/7.Harmonics: on" is activated. This setting can
only be used for 50 Hz or 60 Hz systems.
For the 1st harmonic (fundamental) the display is indicating a measured current of 10 mA as well as
a total harmonic distortion THD of 39 %.
6.8 Alarms during EDS measurement or RCM measurement
If one of the response values set
I
Δ
L
or
I
Δ
n
is exceeded, the ALARM LED flashes. If the fault memory M
is activated, the ALARM LED continues to illuminate after the removal of the fault.
The alarm saved is cleared using the RESET button.
Alarm during insulation fault
location (EDS):
LED flashes
Alarm during a residual current
measurement (RCM):
LED flashes
I
L
= 3mA
Resp. = 5mA
M
PSA30xx
I
L
= mA
Anspr. = 5mA
M
PSA30xx
I
L
= mA
Anspr. = 5mA
M
PSA30xx
I n = 16mA
Resp. = 100mA
M
PSA30xx
I n = 16mA
H1 = 10mA THD = 39%
M
PSA30xx
I
L
= 8mA
Resp. = 5mA
M
PSA30xx
ALARM
I n = 1.6A
Resp. = 100mA
M
PSA30xx
ALARM
Содержание EDS3090
Страница 6: ...Table of Contents 6 EDS309x_D00012_03_M_XXEN 11 2014...
Страница 26: ...Considerations prior to use 26 EDS309x_D00012_03_M_XXEN 11 2014...
Страница 62: ...Frequently Asked Questions 62 EDS309x_D00012_03_M_XXEN 11 2014...
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