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ISOMETER® iso685-…-P

ISOMETER® iso685-…-P

  • Predefined measurement profiles
  • Reliable measurement of insulation resistance, voltage, capacitance and frequency
  • Integrated web server
  • Modbus TCP
  • History memory

The ISOMETER® is a ground-fault monitoring device for IT systems in accordance with IEC 61557-8 and IEC 61557-9. It is universally applicable in AC, 3(N)AC, AC/DC and DC systems. AC systems may include extensive DC-supplied loads (such as rectifiers, inverters, variablespeed drives).

In combination with the ground-fault locators of the EDS44x series or the appropriate measuring current transformers, a ground-fault location system can be set up with the iso685-…-P.

Device variants
iso685-D-P: This device variant ISOMETER® iso685-D-P features a high-resolution graphic LC display and operating controls for direct operation of the device functions. It cannot be combined with an FP200.
iso685-S-P: This device variant ISOMETER® iso685-S-P features neither a display nor operating controls. It can only be used in combination with the FP200 and it is operated via this front panel.
Option "W": The ISOMETER®s with and without integrated display are available with option „W“ for extreme climatic and mechanical conditions (ISOMETER® iso685W-D-P and iso685W-S-P).

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  • Features
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  • Accessories
  • Ordering information
  • Downloads
    iso685-…-P
  • ISOMETER® for IT AC systems with galvanically connected rectifiers or inverters and for IT DC systems (IT = unearthed systems)
  • Automatic adaptation to the existing system leakage capacitance
  • Combination of AMPPlus and other profile-specific measurement methods
  • Two separately adjustable response value ranges of 1 kΩ…10 MΩ
  • High-resolution graphical LC display
  • Connection monitoring (monitoring of the measuring lines)
  • Automatic device self test
  • Graphical representation of the insulation resistance over time (isoGraph)
  • History memory with real-time clock (buffer for three days) for storing 1023 alarm messages with date and time
  • Current or voltage output 0(4)…20 mA, 0…400 μA, 0…10 V, 2…10 V (galvanically separated), which is analogous to the measured insulation value of the system
  • Freely programmable digital inputs and outputs
  • Remote setting of certain parameters via the Internet (web server/Option; COMTRAXX® gateway)
  • Worldwide remote diagnosis via the Internet (made available by Bender Service only)
  • RS-485/BS (Bender sensor bus) for communication with other Bender devices
  • ISOnet: Internal separation of the ISOMETER® from the IT system to be monitored (e.g. if several IT systems are interconnected)
  • BCOM, Modbus TCP/RTU and web server
  • Locating current injection for selective insulation fault location
  • Indication of the insulation faults selectively located by the EDS system
  • Parameter setting of EDS systems
  • Customer-specific texts for each measuring channel

    EDS44x
  • Insulation fault location in AC, 3AC and DC IT systems
  • Up to 12 measuring current transformers of the W…, WR…, WS… measuring current transformer series can be connected
  • Response sensitivity insulation fault location: EDS440 2…10 mA; EDS441 0.2…1 mA
  • Response sensitivity residual current measurement: EDS440 100 mA…10 A; EDS441 100 mA…1 A
  • Communication of the components via BS bus (RS-485) or BB bus
  • AC, DC or AC/DC main circuits
  • AC/DC main circuits with directly connected DC components, such as rectifiers, converters, variable-speed drives
  • UPS systems, battery systems
  • Heaters with phase control
  • Systems including switch-mode power supplies
  • IT systems with high leakage capacitances
  • Installations with insulation fault location

 

Mandatory accessories for ISOMETER® iso685-…-P


Type designationArt. No.
A set of screw-type terminals*B91067901
A set of push-wire terminalsB91067902
Enclosure accessories (terminal cover, 2 mounting clips)*B91067903
Transparent cover 144x72 (IP65) for FP200**B98060005
BB bus 6TE connector***B98110001
* included in the scope of delivery
** If the “transparent front cover 144x72 (IP65)” is used, the cutout in the control cabinet must be increased in height from 66 mm to 68 mm (+ 0.7/-0 mm).
*** Necessary for the connection of the ISOMETER®s with an EDS44…-L

 

Optional accessories for ISOMETER® iso685-…-P

Insulation fault locators
TypeSupply voltage US*Response valueArt. No.
EDS440-S-1AC/DC 24…240 V2…10 mAB91080201
EDS440W-S-1AC/DC 24…240 V2…10 mAB91080201W
EDS440-L-4AC/DC 24…240 V2…10 mAB91080202
EDS440W-L-4AC/DC 24…240 V2…10 mAB91080202W
EDS441-S-1AC/DC 24…240 V0,2…1 mAB91080204
EDS441W-S-1AC/DC 24…240 V0,2…1 mAB91080204W
EDS441-L-4AC/DC 24…240 V0,2…1 mAB91080205
EDS441W-L-4AC/DC 24…240 V0,2…1 mAB91080205W
EDS441-LAB-4AC/DC 24…240 V0,2…1 mAB91080207
EDS441W-LAB-4AC/DC 24…240 V0,2…1 mAB91080207W

Relay module
TypeSupply voltage USArt No.
IOM441-SDC 24 VB95012057
IOM441W-SDC 24 VB95012057W

Variants of ISOMETER® iso685-…-P


TypeNominal system voltage range UnSupply voltage USDisplayOption WArt. No.
iso685-D-PAC 0…690 V; 1…460 Hz
DC 0…1000 V		AC 24…240 V; 50…400 Hz
DC 24…240 V		integrated–B91067030
iso685W-D-P*AC 0…690 V; 1…460 Hz
DC 0…1000 V		AC 24…240 V; 50…400 Hz
DC 24…240 V		integrated-40…+70°C,
3K5, 3M7		B91067030W
iso685-S-P + FP200AC 0…690 V; 1…460 Hz
DC 0…1000 V		AC 24…240 V; 50…400 Hz
DC 24…240 V		detached–B91067230
iso685W-S-P + FP200W*AC 0…690 V; 1…460 Hz
DC 0…1000 V		AC 24…240 V; 50…400 Hz
DC 24…240 V		detached-40…+70°C,
3K5, 3M7		B91067230W


Device variants
iso685-D-P: This device variant ISOMETER® iso685-D-P features a high-resolution graphic LC display and operating controls for direct operation of the device functions. It cannot be combined with an FP200.
iso685-S-P: This device variant ISOMETER® iso685-S-P features neither a display nor operating controls. It can only be used in combination with the FP200 and it is operated via this front panel.
Option "W": The ISOMETER®s with and without integrated display are available with option „W“ for extreme climatic and mechanical conditions (ISOMETER® iso685W-D-P and iso685W-S-P).

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