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  2. 绝缘故障定位设备
ISOSCAN® EDS491-D

ISOSCAN® EDS491-D

  • 自动绝缘故障定位
  • 应用于控制回路
  • 12个测量通道用于测量电流互感器
  • 连接CT监视
  • 适用于各类通用系统

EDS460/490系列绝缘故障评估仪与绝缘监视仪ISOMETER® IRDH575或定位电流发射器PGH组合使用，用于不接地系统(IT系统)的绝缘故障定位。由绝缘监视仪IRDH575或定位电流发射器PGH发出定位电流信号，并且由测量电流互感器扫面后由缘故障评估仪进行相应的评估。一台EDS可以连接12个测量电流互感器。 通过RS-485接口可以连接90台EDS评估仪（BMS协议）。因此，最多可以同时监视1080个回路。最大扫描时间约为4…10 s。

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  • Insulation fault location and residual current measurement
  • For AC, 3AC, DC and IT systems
  • Control and display function within one device (EDS…D)
  • 12 measuring channels (circuits) for measuring current transformers of the CTAC, WR, WS series
  • Up to 90 EDS evaluators in one system (1080 measuring channels)
  • Scanning time for all measuring channels 10 s
  • Response sensitivity
    EDS460/490 2…10 mA (100 Ω/V)
    EDS461/491 0.2…1 mA (1000 Ω / V)
  • History memory to store 300 events
  • Two alarm relays with one changeover contact each
  • N/O or N/C operation, selectable
  • Connection external reset / test button
  • Indication via graphical display resp. 7-segment display and alarm LEDs
  • BMS address range 1…90
  • Serial RS-485 interface
  • Continuous CT connection monitoring
  • Fault memory behaviour selectable
  • Device version EDS490/491 with one alarm contactor per channel
  • Additional residual current measurement
  • Insulation fault location in AC, AC/DC and DC IT systems
  • Main and control circuits in industrial installations and ships
  • Diode-decoupled DC IT systems in power stations
  • Systems for medical locations

 

可选配件 ISOSCAN® EDS491-D

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
AN471 (power supply unit for DI-1 or DI-2)AC 230 V 50/60 Hz/AC, DC 20 VB924189
* Absolute values

Protocol converters
TypeSupply voltage USArt. No.
COM465IPAC/DC 24…240 V, 50…60 HzB95061065
COM462RTUAC/DC 76…276 V, 42…460 HzB95061022

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

版本 ISOSCAN® EDS491-D


TypeSupply voltage US*Response valueArt. No.
EDS491-D-1DC 16…94 V / AC 16…72 V, 42…460 Hz0,2…1 mAB91080013
EDS491-D-2AC/DC 70…276 V / AC 42…460 Hz0,2…1 mAB91080014
*Absolute value

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