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ISOSCAN® EDS440

ISOSCAN® EDS440

  • Automatic insulation fault location
  • Application main circuits
  • 12 measuring channels for measuring current transformers
  • CT connection monitoring
  • Universal system concept

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.

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  • Features
  • Applications
  • Accessories
  • Ordering information
  • Downloads
  • 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 visualisation systems possible
  • Insulation fault location in AC, 3AC and DC IT systems
  • Main circuits and control circuits in industrial plants and ships
  • Diode-decoupled DC IT systems in power plants
  • Systems for medical locations

 

Optional accessories for ISOSCAN® EDS440

Accessories
TypeSupply voltage USArt. no.
DI-1PSM (RS-485 repeater)AC/DC 24 V ± 20 %B95012044
DI-2USB (interface converter RS-485/USB) with USB cableSupplied by USB interfaceB95012045
IOM441-S (input/output module)12-fold relay moduleB95012057
AN471 (power supply unit for DI-1 or DI-2)AC 230 V 50/60 Hz /
AC, DC 20 V		B924189

Measuring current transformer for EDS440
TypeInternal diameter/mmDesign typeArt. no.
CTAC20ø 20circularB98110005
CTAC35ø 35circularB98110007
CTAC60ø 60circularB98110017
CTAC120ø 120circularB98110019
CTAC210ø 210circularB98110020
WS20x3020 x 30split-coreB98080601
WS50x8050 x 80split-coreB98080603
WS80x12080 x 120split-coreB98080606

Alternative measuring current transformer from the Bender program
TypeInternal diameter/mmDesign typeArt. no.
W10/60010circularB911761
W0-S2020circularB911787
W1-S3535circularB911731
W2-S7070circularB911732
W3-S105105circularB911733
W4-S140140circularB911734
W5-S210210circularB911735
WR70x175S70x175rectangularB911738
WR115x305S115x305rectangularB911739
WR150x350S150x350rectangularB911740
WR200x500S200x500rectangularB911763
WS50x80S50x80split-coreB911741
WS80x80S80x80split-coreB911742
WS80x120S80x120split-coreB911743
WS80x160S80x160split-coreB911755

Variants of ISOSCAN® EDS440


TypeSupply voltage US*Response valueLED displayOption "W"Art. no.
EDS440-S-1DC 242…10 mA----B91080201
EDS440W-S-1DC 24 V2…10 mA--✓B91080201W
EDS440-L-4AC/DC 24…240 V2…10 mA✓--B91080202
EDS440W-L-4AC/DC 24…240 V2…10 mA✓✓B91080202W
*Absolute values

Downloads for ISOSCAN® EDS440

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