Insulation Monitoring and fault location
- Predefined measurement profiles
- Reliable measurement of insulation resistance
- Integrated web server / Modbus TCP/RTU
- Automatic insulation fault location
- 12 measuring channels for measuring current transformers
Insulation monitoring devices Iso685-x-x continuously monitor the insulation resistance of IT systems (unearthed systems) and issue an alarm if the value falls below a response value.
To obtain a measurement, the device has to be connected between the IT system and the protective earth conductor (PE). A measuring current is superimposed onto the system which is detected and evaluated by a measuring circuit. Insulation monitoring devices detect deteriorations of the insulation level at an early stage and in a reliable way.
The insulation fault locators ISOSCAN® EDS440 are used in connection with the ISOMETER® iso685-D-P or the locating current injector PGH to locate insulation faults in unearthed power supply systems (IT systems).
They detect locating current signals generated by the insulation monitoring device iso685-D-P or IRDH575 or the locating current injector PGH and evaluate them correspondingly. Up to 12 measuring current transformers can be connected to an EDS440. In total, up to 21 insulation fault locators can be connected via an RS-485 interface (BS bus protocol) and thereby up to 252 outgoing circuits can be monitored.