Function
15
IR1575PG1_D00357_01_M_XXEN/12.2019
Insulation fault location
Another function of the IR1575PG1 is the generation of the test current for selective in-
sulation fault location. When the value of the insulation resistance falls below the set re-
sponse values Alarm1 and Alarm2, the IR1575PG1 generates the respective test current.
In combination with an EDS460-D-... insulation fault evaluator and the associated
measuring current transformers connected to it, the insulation fault can be selectively
detected. If no test current > 1.5 mA can be generated, the alarm message "No EDS
funct." will be indicated. This may be caused by a device defect, loss of voltage or over-
temperature in the device. Another cause may be a response value selected too high re-
sulting in an increased insulation resistance too high to generate a sufficient test
current.
Alarm messages and corrective actions
Alarm message
Description
Corrective actions
System connec-
tion?
No low-resistance con-
nection of the termi-
nals L1, L3 to the
system
1. Check the wiring of the terminals L1, L3
to the system
2. Press the TEST button
3. Switch the supply voltage on and off
4. Check the fuse
Connection PE? No low-resistance con-
nection between ter-
minal
and KE to
earth (PE)
1. Check wiring of terminal
and KE to
earth (PE)
2. Press the TEST button
3. Switch the supply voltage on and off
Device error x
Internal device error
1. Press the TEST button
2. Switch the supply voltage on and off
3. Contact Bender
Insulation fault
The insulation resis-
tance value has fallen
below the set response
value
1. Reduce the response value
2. Locate and clear insulation fault
(EDS460-D-...)
No EDS Funct.
A test current cannot be
generated
1. Check response value
2. Check supply voltage
