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 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 50 insulation fault locators can be connected via an RS-485 interface (BS bus protocol) and thereby up to 600 outgoing circuits can be monitored.
Features
Universal system concept
Modular design, therefore easily adjustable to the given circumstances
Measuring current transformers available in various sizes and versions
CT connection monitoring
12 measuring channels for measuring current transformer series CTAC…, WR…, WS…
Optional extension by 12 relay channels
Fault memory behaviour selectable
Up to 50 EDS insulation fault locators in the system, 600 measuring channels
Response sensitivity: 2…10 mA
AC residual current measurement with configurable response value
Two alarm relays with one N/O contact each
N/O or N/C operation selectable
External test/reset
Central display of faulty outgoing circuits
Serial interface RS-485, BS bus address range 2…79, Modbus RTU
Connection to higher-level control and visualization systems possible
Applications
Insulation fault location in AC, 3AC and DC IT systems
Main circuits and control circuits in industrial plants and ships
