How does an insulation monitoring device (IMD) work?
Explore insulation resistance measurement, the Riso alarm and the relationship between measurement method and system.
Read the technical guideProduct families / Insulation monitoring · IMD / ISOMETER® IR423
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BENDER DISTRIBUTOR IN TÜRKİYE · ADEO TEKNİK
Bender ISOMETER® IR423Insulation Monitoring Device (IMD)
Insulation monitoring device for unearthed AC 0…300 V systems supplied by mobile generators.
TECHNICAL SUMMARY
Features that distinguish this model.
Mobile power generation
- AC 0…300 V; operating frequencies of 30 Hz and above.
- Maximum system leakage capacitance 5 µF.
- Two independent alarm thresholds, two relays and system/earth connection monitoring.
- 36 mm enclosure; W variant for increased mechanical stress.
FROM PRODUCT TO TECHNICAL KNOWLEDGE
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Explore the product's function and its system's operating principle through technical explanations.
What is an insulation monitoring device (IMD)?
Progress from system type, voltage, leakage capacitance and application conditions to selecting a suitable IMD.
Read the technical guideSystem leakage capacitance and measuring methods in IMD selection
Learn how leakage capacitance and power electronics affect measurement methods and device selection.
Read the technical guideADEO Teknik · Bender distributor in Türkiye
Ask ADEO Teknik Technical product information and supply support for model selection, compatible components and current manufacturer documentation.
MODEL, ORDER AND ACCESSORY INFORMATION
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6 / 6 options
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Model options and technical values
| Model | Nominal system voltage* U n | Supply voltage* U S | Order code** |
|---|---|---|---|
| IR423D4-1 | AC 0…300 V, 30…460 Hz | AC 16…72 V, 30…460 Hz / DC 9,6…94 V | B71016304 / B91016304 |
| IR423D4-2 | AC 0…300 V, 30…460 Hz | AC/DC 70…300 V, 30…460 Hz | B71016305 / B91016305 |
| IR423-D4W-1 | AC 0…300 V, 30…460 Hz | DC 9,6…94 V / AC 16…72 V, 30…460 Hz | B71016304W / B91016304W |
| IR423-D4W-2 | AC 0…300 V, 30…460 Hz | AC/DC 70…300 V, 30…460 Hz | B71016305W / B91016305W |
Manufacturer table notes (original language):
* absolute values **(B7… = push-wire terminal / B9… = screw-type terminal)
Explore compatible accessories
Compatible accessories · 1
| Model | Order code |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
Based on tables on the manufacturer's current product page. For marked-value footnotes, connection conditions and variant suitability, review Bender product source ↗ and the technical documents together. Listing an order code does not commit to stock availability or delivery time.
BENDER MANUFACTURER DOCUMENTS
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3 / 3 documents
Datasheet
IR423
IR423-D4_D00038_D_XXEN.pdfTechnical summary source · pp. 1, 2Open document ↗Conformity documentIR42x
CEKO_IR42x.pdfOpen document ↗Conformity documentUKCA - IR42x
UKCA_IR42x.pdfOpen document ↗No documents match your search. Change the search or document type.
About manufacturer sources
This summary is based on product descriptions and features on the specified pages of the documents above. Consult the manufacturer document for complete technical values, connection information and ordering options.
Current product and variant information · Bender ↗
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APPLICATIONS
Its role in your application.
Used as part of the electrical separation, insulation monitoring and disconnection arrangement on construction sites and portable units. Insulation resistance is displayed; separate thresholds distinguish prewarning from alarm.
IN THE SAME APPLICATION GROUP
