Considerations prior to use
23
EDS309x_D00012_03_M_XXEN/11.2014
The characteristics below enable you to simply determine a practical response value for the
EDS195P. If the insulation monitoring device in a monitored system indicates an alarm message,
manual insulation fault location can be started. Proceed as follows:
1. Select the characteristics (3AC, AC, DC) that are appropriate for your type of system.
2. From these, select the diagram that best matches the desired system voltage.
3. Calculate the expected leakage capacitance C
e
of the system monitored. Insulation monitoring
devices in the IRDH… series can indicate the magnitude of the leakage capacitance (press
INFO button). Apply this value to the diagram in the form of a vertical line.
If it is not possible to check the capacitance, the highest capacitance in the related diagram is
to be taken.
4. The characteristics shown indicate the response sensitivity of the EDS195P in main circuits for
2 mA, 5 mA and 10 mA and in control circuits for 0.2 mA, 0.5 mA and
1 mA. Values above the related curve cannot be measured. Values and characteristics that lie in
the area between the upper and lower characteristic can be estimated approximately using
the existing characteristics.
5. Set the required response value, on the left of the line from point 3., on the EDS195P.
6. The characteristics for DC 24 V and AC 42 V do not apply to the EDS3096, as the locating cur-
rent generator operates with a locating voltage of DC 50 V. For this reason the curves for
DC 60 V and AC 110 V apply at these nominal voltages.
4.4.1
Response characteristics for main circuits in 3AC systems
0
20
40
60
80
100
120
140
160
0
50
100
150
R
F
[k]
Ce[uF]
3AC230V
2mA
5mA
10mA
0
20
40
60
80
100
120
0
20
40
60
80
R
F
[k]
Ce[uF]
3AC400V
2mA
5mA
10mA
0
20
40
60
80
100
120
140
160
0
10
20
30
40
50
60
R
F
[k]
Ce[uF]
3AC500V
2mA
5mA
10mA
0
50
100
150
200
250
0
10
20
30
40
50
RF[k]
Ce[uF]
3AC690V
2mA
5mA
10mA
Summary of Contents for EDS3090
Page 6: ...Table of Contents 6 EDS309x_D00012_03_M_XXEN 11 2014...
Page 26: ...Considerations prior to use 26 EDS309x_D00012_03_M_XXEN 11 2014...
Page 62: ...Frequently Asked Questions 62 EDS309x_D00012_03_M_XXEN 11 2014...
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