Tecnologie innovative per la gestione sicura dell'energia elettrica con elevata continuità di servizio

I prodotti Bender sono rinomati e utilizzati in tutto il mondo da oltre 65 anni.

Offriamo la massima qualità e sicurezza unite a un servizio globale di assistenza e tutto il supporto che vi serve per la risoluzione dei vostri problemi di monitoraggio.



  • 10 GΩ measurement
  • Integrated web server and Modbus TCP communication
  • Early detection enhances operational safety and maintenance planning possibilities.
  • Synchronisation in systems coupled via capacitances
  • High adaptability to systems with different properties

The ISOMETER® is an insulation monitoring devices in accordance with IEC 61557-8 for IT systems. The devices are 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).

A measuring range of up to 10 GΩ allows the trend of the insulation level to be recognised at an early stage. Therefore, the ISOMETER® is predestined for monitoring subsea cables in the oil and gas industry.


  • 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…3 GΩ for alarm 1 and alarm 2
  • High-resolution graphic LC display for excellent readability and recording of the device status
  • 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 via the Internet or Intranet (Webserver/Option: COMTRAXX® Gateway).
  • Remote diagnosis via the Internet (made available by Bender Service only)
  • isoData: Continuous uninterrupted data transmission
  • isoSync: Timely synchronization of measurement processes
  • RS-485/BS (Bender sensor bus) for data exchange with other Bender devices via Modbus RTU protocol
  • BCOM, Modbus TCP und web server
  • ISOnet: Internal separation of the ISOMETER® from the IT system to be monitored (e.g. if several IT systems are interconnected)
  • ISOnet priority: Permanent priority of a device within the network
  • ISOloop: Special function for ring systems (all systems are coupled)


  • 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
  • Coupled IT systems with high leakage capacitances
  • Monitoring of long capacitive coupled lines
  • Monitoring of submarine cables

ISOMETER® isoHR685W Variante/i

TypeNominal system voltage range UnSupply voltage USDisplayArt. no.
isoHR685W–D–I–BAC 0…1000 V; 0.1…460 Hz /
DC 0…1300 V
AC 24…240 V; 50…400 Hz /
DC 24…240 V
isoHR685W–S–I–B + FP200W*AC 0…1000 V; 0,1…460 Hz /
DC 0…1300 V
AC 24…240 V; 50…400 Hz /
DC 24…240 V

* only available in combination

Accessori opzionali per ISOMETER® isoHR685W

Type designationTypeArt. No.
Coupling devicesAGH150W-4

Possible measuring instruments on request!

DescriptionArt. No.
A set of screw 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 connectorB98110001

* 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).

Download per ISOMETER® isoHR685W

Dichiarazioni di conformità CE iso685 92.3 KB 2022/08/12 06:17:2512.08.2022 06:17:25
Data sheet isoHR685W-x-I-B 1.9 MB DE2022/09/30 07:06:2030.09.2022 07:06:20D00261
Data sheet isoHR685W-x-I-B 1.9 MB EN2022/09/30 07:06:3130.09.2022 07:06:31D00261
Manuali di istruzioni isoHR685W-x-I-B 12.3 MB DE2022/06/09 10:46:3609.06.2022 10:46:36D00261
Manuali di istruzioni isoHR685W-x-I-B 12.4 MB EN2022/09/30 07:07:2930.09.2022 07:07:29D00261
Quickstarts isoHR685W-x-I-B 4.6 MB DE2021/12/01 07:03:1801.12.2021 07:03:18D00261
Quickstarts isoHR685W-x-I-B 4.6 MB EN2021/12/01 07:03:1801.12.2021 07:03:18D00261
Flyer Earth fault protection of umbilicals 450.1 KB EN2019/08/28 12:31:2728.08.2019 12:31:27
Data sheet isoHR685W-x-I-B 2.4 MB FR2021/07/13 13:08:1013.07.2021 13:08:10D00261
Data sheet isoHR685W-x-I-B 2.4 MB ES2021/07/13 13:07:5413.07.2021 13:07:54D00261
Software isoHR685(W)-S/D Update V1.27 6.3 MB 2021/11/17 05:51:2817.11.2021 05:51:28D00261
Depliant prodotto iso685 1.8 MB DE2019/05/13 10:30:5713.05.2019 10:30:57D00022
Depliant prodotto iso685 1.8 MB EN2019/05/13 10:31:0113.05.2019 10:31:01D00022
Depliant prodotto iso685 1.8 MB ES2019/05/13 10:31:2313.05.2019 10:31:23D00022