ISOSCAN® EDS491-L

- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.

Your personal contact will be happy to assist you.

 Do you already know our new product generation:

ISOSCAN® EDS441

ISOSCAN® EDS441

Questions? Contact us!

ISOSCAN® EDS491-L
ISOSCAN® EDS491-L

- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.01.2025.

Your personal contact will be happy to assist you.

 Do you already know our new product generation:

ISOSCAN® EDS441

ISOSCAN® EDS441

Questions? Contact us!

Features

  • Insulation fault location in IT systems
  • For AC, 3AC, DC and IT systems
  • Control and display function in a single device (EDS…-D)
  • 12 measuring channels (circuits) for measuring current transformers of the CTAC, WR, WS series
  • Up to 90 EDS insulation fault locators in the system (1080 measuring channels)
  • Scanning time max. 10 s for all measuring channels (parallel scanning)
  • Response sensitivity
    - EDS460/490 2…10 mA,
    - EDS461/491 0.2…1 mA
  • History memory to store 300 events
  • Two alarm relays with one changeover contact each
  • N/O or N/C operation, selectable
  • Connection external test/reset button
  • Indication via graphical display resp. 7-segment display and alarm LEDs
  • BMS address range 1…90
  • Serial interface RS-485
  • Continuous CT connection monitoring
  • Fault memory behaviour selectable
  • Device version EDS490/491 with one alarm contactor per channel
  • Additional AC residual current measurement

Applications

  • Insulation fault location in AC, AC/DC and DC IT systems
  • Main and control circuits in industrial plants and ships
  • Diode-decoupled DC IT systems in power stations
  • Systems for medical locations

ISOSCAN® EDS491-L Variant(s)

TypeSupply voltage US*Response valueArt. No.
EDS491-L-1DC 16…94 V / AC 16…72 V, 42…460 Hz0,2…1 mAB91080015
EDS491-L-2AC/DC 70…276 V / AC 42…460 Hz0,2…1 mAB91080016

* Absolute values

Optional Accessories for ISOSCAN® EDS491-L

Accessories

TypeSupply voltage USArt. No.
DI-1DL (interface repeater)AC 85…260 V, 50…60 HzB95012047
DI-2USB (interface converter RS-485/USB)supplied by the USB port, no additional power supply required.B95012045

* Absolute values


Protocol converters

TypeSupply voltage USArt. No.
COM465IPAC/DC 24…240 V, 50…60 HzB95061065


Measuring current transformers for EDS460/490

TypeInside diameter/mmType of constructionArt. No.
CTAC20ø 20circularB98110005
CTAC35ø 35circularB98110007
CTAC60ø 60circularB98110017
CTAC120ø 120circularB98110019
CTAC210ø 210circularB98110020
WR70x17570 x 175rectangularB98080609
WR115x305115 x 305rectangularB98080610
WS20x3020 x 30split-coreB98080601
WS50x8050 x 80split-coreB98080603
WS80x8080 x 80split-coreB98080605
WS80x12080 x 120split-coreB98080606
WS80x16080 x 160split-coreB98080608


Alternative measuring current transformers from the Bender range

TypeInside diameter/mmType of constructionArt. No.
W10/60010circular-typeB911761
W0-S2020circular-typeB911787
W1-S3535circular-typeB911731
W2-S7070circular-typeB911732
W3-S105105circular-typeB911733
W4-S140140circular-typeB911734
W5-S210210circular-typeB911735
WR70x175S70x175rectangularB911738
WR115x305S115x305rectangularB911739
WR150x350S150x350rectangularB911740
WR200x500S200x500rectangularB911763
WS50x80S50x80split-coreB911741
WS80x80S80x80split-coreB911742
WS80x120S80x120split-coreB911743
WS80x160S80x160split-coreB911755


Measuring current transformers for EDS461/491

TypeInside diameter/mmType of constructionArt. No.
WS20x30-800020 x 30split-coreB98080602
WS50x80-800050 x 80split-coreB98080604


Alternative measuring current transformers from the Bender range

TypeInside diameter/mmType of constructionArt. No.
W10/800010circular-typeB911759
W1-35/800035circular-typeB911756
WS20x30/800020 x 30split-coreB911764
WS50x80/800050 x 80split-coreB911757
W10/8000-610circular, 6xB911900

Downloads for ISOSCAN® EDS491-L

NameCategorySizeLanguageTimestampD-/B-Number
EDS46x-49x CE Declarations of Conformity 90.5 KB 2022/08/1212.08.2022
EDS460/490 - EDS461/491 Manuals 4.0 MB EN2019/05/1313.05.2019D00085
Industrial EDS Flyers 1.1 MB EN2021/04/2828.04.2021
Healthcare EDS Flyers 1.7 MB EN2021/04/2929.04.2021
EDS49x Manuals 593.7 KB EN2021/10/1212.10.2021D00085