Installation and connectionInstallation and connection
iso1685DP_D00272_03_M_XXEN/08.2017
17
5.2.2 Step-by-step connection of the ISOMETER®
Connect the device according to the wiring diagram.
Proceed as follows:
1. Connect terminal E and KE to earth (PE)
2. Connect terminal A and B to the BMS bus
3. Connect terminal S to the bus conductor shield
(only at one end of the conductor)
4. Connect terminal L1/+ to L1 of the system to be monitored
5. Connect terminal L2/– to L2 of the system to be monitored
6. Connect terminal A1/A2 to the supply voltage U
s
7. Connect alarm outputs 11/12/14, 21/22/24 and 31/32/34.
The coupling terminals L1/+ and L2/– are locked. To unplug the terminals,
the orange sliders must be slid towards the front (towards the device) to
unlock the terminal. Now the terminal can be unplugged.
5.2.3 Connecting the EDS to the ISOMETER® iso1685DP
Risk of malfunctions due to excessive locating current on sensitive
system parts!
The locating current flowing between the IT system and earth can cause
controller faults in sensitive parts of the system, such as the PLC or relay.
Ensure that the level of the locating current is compatible with the system
to be monitored.
Risk of incorrect measurement
The supplied locating current may influence other connected insulation
fault location systems. If they measure the injected locating current, the
measurement might be incorrect.
Insulation monitoring is deactivated
while the insulation fault location is active.
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