Insulation monitoring

Insulation monitoring devices continuously monitor the insulation resistance of IT systems (unearthed systems) and issue an alarm if the value falls below a response value.

To obtain a measurement, the device has to be connected between the IT system and the protective earth conductor (PE). A measuring current is superimposed onto the system which is detected and evaluated by a measuring circuit. Insulation monitoring devices detect deteriorations of the insulation level at an early stage and in a reliable way.

Product overview ISOMETER®/ ISOSCAN®

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Voltage system
Coupled systems
Installation
Insulation fault location
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37 Products found

ISOMETER® iso685…
ISOMETER® iso685…

Insulation monitoring device for inverter applications and large industrial plants

ISOMETER® iso685…
ISOMETER® iso685-…-B

Insulation monitoring device for inverter applications and large industrial plants, variant for coupled systems

ISOMETER® iso685-…-P
ISOMETER® iso685-…-P

Insulation monitoring device for inverter applications and large industrial plants, variant for coupled systems and insulation fault location

ISOMETER® isoNAV685-D
ISOMETER® isoNAV685-D

Insulation monitoring device with instantaneous tripping, frequency nominal system voltage 60 Hz

ISOMETER® isoNAV685-D-B
ISOMETER® isoNAV685-D-B

Insulation monitoring device for offline monitoring of de-energised loads

ISOMETER® isoHR685W-…-I-B
ISOMETER® isoHR685W

Insulation monitoring device for measuring high-resistance insulation resistances up to 10 GΩ and to monitor long parallel cable

ISOMETER® isoRW685W-D
ISOMETER® isoRW685W-D

Insulation monitoring device tailored to the requirements of railway rolling stock applications

ISOMETER® isoRW685W-D-B
ISOMETER® isoRW685W-D-B

Insulation monitoring device especially for railway applications

ISOMETER® IRDH275BM-7
ISOMETER® IRDH275BM-7 with AGH675S-7…

Device combination for insulation monitoring in medium-voltage systems

ISOMETER® iso415R

Insulation monitoring device for unearthed AC, AC/DC and DC main and control circuits

ISOMETER® IR420-D4
ISOMETER® IR420-D4

Insulation monitoring device for unearthed AC control circuits

ISOMETER® IR425-D4
ISOMETER® IR425-D4

Insulation monitoring device for unearthed AC/DC control circuits

ISOMETER® iso1685DP-425/isoHV1685D-425/isoLR1685DP-325
ISOMETER® iso1685DP/isoHV1685D/isoLR1685DP

Insulation monitoring device for unearthed AC, AC/DC and DC power supplies (IT systems)

ISOMETER® isoHR1685DW–925
ISOMETER® isoHR1685DW–925

Insulation monitoring device for mobile, insulated elevating work platforms

ISOMETER® IR1575
ISOMETER® IR1575…

Insulation monitoring device for unearthed systems up to 480 V

ISOMETER® IR427 mit MK7
ISOMETER® IR427 with MK7

Insulation monitoring device for medical IT systems

ISOMETER® isoMED427P
ISOMETER® isoMED427

Insulation monitoring device with an integrated locating current injector for medical IT systems

ISOMETER® isoLR275 mit AGH-LR
ISOMETER® isoLR275 with AGH-LR

Insulation monitoring device for installations with a low-resistance insulation level

ISOMETER® isoPV mit AGH-PV
ISOMETER® isoPV with AGH-PV

Insulation monitoring device for photovoltaic systems up to AC 793 V/DC 1100 V

ISOMETER® isoPV425 mit AGH420
ISOMETER® isoPV425 with AGH420

Insulation monitoring device for photovoltaic systems up to AC 690 V/DC 1000 V

ISOMETER® isoPV1685/isoPV1685PFR
ISOMETER® isoPV1685RTU/isoPV1685P

Insulation monitoring device for unearthed systems in photovoltaic installations up to AC 1000 V/DC 1500 V

ISOMETER® isoPV1685DP

Insulation monitoring device for unearthed systems in photovoltaic systems

ISOMETER® IR420-D6
ISOMETER® IR420-D6

Offline monitor (earth fault lock-out) for monitoring de-energised loads in TN,TT and IT systems

ISOMETER® IR423
ISOMETER® IR423

Insulation monitoring device for mobile generators

ISOMETER® IR123P
ISOMETER® IR123P

Insulation monitoring device for mobile generators

ISOMETER® isoGEN423
ISOMETER® isoGEN423

Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT systems) up to 3(N)AC, AC 400 V, DC 400 V

ISOMETER® isoRW425
ISOMETER® isoRW425

Insulation monitoring device for railway applications up to AC/DC 440 V

isoBAT425
ISOMETER® isoBAT425 with coupling impedance ZE420

Insulation monitoring device for batteries up to DC 400 V

ISOMETER® isoES425
ISOMETER® isoES425

Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT systems) for energy storage devices up to AC/DC 400 V

ISOMETER® isoHV425 mit AGH422
ISOMETER® isoHV425 with AGH422

Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT system)

ISOMETER® isoCHA425

Insulation monitoring device for unearthed DC systems (IT systems) DC 0 V to 400 V. Suitable for DC charging stations according to CCS or CHAdeMO

ISOMETER® isoCHA425HV mit AGH420-1
ISOMETER® isoCHA425HV with AGH420-1/AGH421-1

Insulation monitoring device with coupling device for unearthed DC systems (IT systems) DC 0 V to 1000 V Suitable for DC charging stations according to CCS or CHAdeMO

ISOMETER® IR155-3203 / IR155-3204
ISOMETER® IR155-3203/IR155-3204

Insulation monitoring device for unearthed DC drive systems in electric vehicles

ISOMETER® IR155-4203/IR155-4204
ISOMETER® IR155-4203/IR155-4204

Insulation monitoring device for unearthed DC drive systems in electric vehicles

ISOMETER® iso175

Insulation monitoring device for unearthed drive systems (IT systems) in electric and hybrid vehicles

ISOMETER® IR155-3210
ISOMETER® IR155-3210

- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.10.2024.

ISOMETER® IR155-4210
ISOMETER® IR155-4210

- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.10.2024.

ISOMETER® iso685…
ISOMETER® iso685…

Insulation monitoring device for inverter applications and large industrial plants

Details
ISOMETER® iso685…
ISOMETER® iso685-…-B

Insulation monitoring device for inverter applications and large industrial plants, variant for coupled systems

Details
ISOMETER® iso685-…-P
ISOMETER® iso685-…-P

Insulation monitoring device for inverter applications and large industrial plants, variant for coupled systems and insulation fault location

Details
ISOMETER® isoNAV685-D
ISOMETER® isoNAV685-D

Insulation monitoring device with instantaneous tripping, frequency nominal system voltage 60 Hz

Details
ISOMETER® isoNAV685-D-B
ISOMETER® isoNAV685-D-B

Insulation monitoring device for offline monitoring of de-energised loads

Details
ISOMETER® isoHR685W-…-I-B
ISOMETER® isoHR685W

Insulation monitoring device for measuring high-resistance insulation resistances up to 10 GΩ and to monitor long parallel cable

Details
ISOMETER® isoRW685W-D
ISOMETER® isoRW685W-D

Insulation monitoring device tailored to the requirements of railway rolling stock applications

Details
ISOMETER® isoRW685W-D-B
ISOMETER® isoRW685W-D-B

Insulation monitoring device especially for railway applications

Details
ISOMETER® IRDH275BM-7
ISOMETER® IRDH275BM-7 with AGH675S-7…

Device combination for insulation monitoring in medium-voltage systems

Details
ISOMETER® iso415R

Insulation monitoring device for unearthed AC, AC/DC and DC main and control circuits

Details
ISOMETER® IR420-D4
ISOMETER® IR420-D4

Insulation monitoring device for unearthed AC control circuits

Details
ISOMETER® IR425-D4
ISOMETER® IR425-D4

Insulation monitoring device for unearthed AC/DC control circuits

Details
ISOMETER® iso1685DP-425/isoHV1685D-425/isoLR1685DP-325
ISOMETER® iso1685DP/isoHV1685D/isoLR1685DP

Insulation monitoring device for unearthed AC, AC/DC and DC power supplies (IT systems)

Details
ISOMETER® isoHR1685DW–925
ISOMETER® isoHR1685DW–925

Insulation monitoring device for mobile, insulated elevating work platforms

Details
ISOMETER® IR1575
ISOMETER® IR1575…

Insulation monitoring device for unearthed systems up to 480 V

Details
ISOMETER® IR427 mit MK7
ISOMETER® IR427 with MK7

Insulation monitoring device for medical IT systems

Details
ISOMETER® isoMED427P
ISOMETER® isoMED427

Insulation monitoring device with an integrated locating current injector for medical IT systems

Details
ISOMETER® isoLR275 mit AGH-LR
ISOMETER® isoLR275 with AGH-LR

Insulation monitoring device for installations with a low-resistance insulation level

Details
ISOMETER® isoPV mit AGH-PV
ISOMETER® isoPV with AGH-PV

Insulation monitoring device for photovoltaic systems up to AC 793 V/DC 1100 V

Details
ISOMETER® isoPV425 mit AGH420
ISOMETER® isoPV425 with AGH420

Insulation monitoring device for photovoltaic systems up to AC 690 V/DC 1000 V

Details
ISOMETER® isoPV1685/isoPV1685PFR
ISOMETER® isoPV1685RTU/isoPV1685P

Insulation monitoring device for unearthed systems in photovoltaic installations up to AC 1000 V/DC 1500 V

Details
ISOMETER® isoPV1685DP

Insulation monitoring device for unearthed systems in photovoltaic systems

Details
ISOMETER® IR420-D6
ISOMETER® IR420-D6

Offline monitor (earth fault lock-out) for monitoring de-energised loads in TN,TT and IT systems

Details
ISOMETER® IR423
ISOMETER® IR423

Insulation monitoring device for mobile generators

Details
ISOMETER® IR123P
ISOMETER® IR123P

Insulation monitoring device for mobile generators

Details
ISOMETER® isoGEN423
ISOMETER® isoGEN423

Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT systems) up to 3(N)AC, AC 400 V, DC 400 V

Details
ISOMETER® isoRW425
ISOMETER® isoRW425

Insulation monitoring device for railway applications up to AC/DC 440 V

Details
isoBAT425
ISOMETER® isoBAT425 with coupling impedance ZE420

Insulation monitoring device for batteries up to DC 400 V

Details
ISOMETER® isoES425
ISOMETER® isoES425

Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT systems) for energy storage devices up to AC/DC 400 V

Details
ISOMETER® isoHV425 mit AGH422
ISOMETER® isoHV425 with AGH422

Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT system)

Details
ISOMETER® isoCHA425

Insulation monitoring device for unearthed DC systems (IT systems) DC 0 V to 400 V. Suitable for DC charging stations according to CCS or CHAdeMO

Details
ISOMETER® isoCHA425HV mit AGH420-1
ISOMETER® isoCHA425HV with AGH420-1/AGH421-1

Insulation monitoring device with coupling device for unearthed DC systems (IT systems) DC 0 V to 1000 V Suitable for DC charging stations according to CCS or CHAdeMO

Details
ISOMETER® IR155-3203 / IR155-3204
ISOMETER® IR155-3203/IR155-3204

Insulation monitoring device for unearthed DC drive systems in electric vehicles

Details
ISOMETER® IR155-4203/IR155-4204
ISOMETER® IR155-4203/IR155-4204

Insulation monitoring device for unearthed DC drive systems in electric vehicles

Details
ISOMETER® iso175

Insulation monitoring device for unearthed drive systems (IT systems) in electric and hybrid vehicles

Details
ISOMETER® IR155-3210
ISOMETER® IR155-3210

- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.10.2024.

Details
ISOMETER® IR155-4210
ISOMETER® IR155-4210

- This device series is in the discontinuation phase. -
Deliverable according to availability until 01.10.2024.

Details