Bender Device / Instrument
ISOSCAN® EDS440 / EDS441
12-channel insulation fault locators for main (EDS440) and control (EDS441) circuits in unearthed IT systems, including ships, used with ISOMETER® iso685-D-P or PGH injector.
Description
The ISOSCAN® EDS440 (main circuits) and EDS441 (control circuits) locate insulation faults in unearthed power supply systems (IT systems) by detecting the locating current signals generated by an ISOMETER® iso685-D-P or a PGH locating current injector.
Key features
- 12 measuring channels for CTAC… or WR… measuring current transformers, with CT connection monitoring
- Optional extension by 12 relay channels; two alarm relays
- RS-485 interface with BS bus (address range 2…79) and Modbus RTU
- Up to 50 locators per system, monitoring up to 600 outgoing circuits
- Response sensitivity: EDS440 2…10 mA, EDS441 0.2…1 mA
Applications
AC, 3AC and DC IT systems; main and control circuits in industrial plants and ships; diode-decoupled DC IT systems in power plants; medical locations.
Specifications
| Measuring channels | 12 |
|---|---|
| Response sensitivity EDS440 | 2…10 mA |
| Response sensitivity EDS441 | 0.2…1 mA |
| Max. system size | 50 locators, 600 measuring channels |
| Supply voltage | DC 24 V or AC/DC 24…240 V (variant dependent) |
| Interface | RS-485, BS bus address 2…79, Modbus RTU |
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