ISOMETER® IR423
- Ground-fault monitoring device for mobile generators
- Protective separation with ground-fault monitoring and disconnection
- According to IEC 60364-5-55 and IEC 61557-8
- Two separately configurable response values
- Multi-functional LC display
The ISOMETER® of the IR423 series is designed to monitor the insulation resistance RF of an ungrounded AC system of 0…300 V to earth that is supplied by a mobile generator according to IEC 60364-5-551 / DIN VDE 0100-551 (VDE 0100-551). The IR423 is suitable for AC systems with operating frequencies ≥ 30 Hz as well as for AC systems with directly connected DC circuits. The maximum permissible system leakage capacitance Cemax is 5 F.
- Ground-fault monitoring device for mobile generators
- Protective separation with ground-fault monitoring and disconnection
- According to IEC 60364-5-55 and IEC 61557-8
- Two separately configurable response values
- Multi-functional LC display
The ISOMETER® of the IR423 series is designed to monitor the insulation resistance RF of an ungrounded AC system of 0…300 V to earth that is supplied by a mobile generator according to IEC 60364-5-551 / DIN VDE 0100-551 (VDE 0100-551). The IR423 is suitable for AC systems with operating frequencies ≥ 30 Hz as well as for AC systems with directly connected DC circuits. The maximum permissible system leakage capacitance Cemax is 5 F.
Features
- Insulation monitoring for mobile generators AC 0…300 V
- Protection by electrical separation with insulation monitoring and disconnection
- Version “W” for protection against high mechanical stress
- Two separately adjustable response values
- Connection monitoring system/earth
- Power On LED, alarm LEDs: Alarm 1, Alarm 2
- Internal/external test/reset button
- Two separate alarm relays (one changeover contact each)
- N/O or N/C operation, selectable
- Fault memory behaviour, selectable
- Self monitoring with automatic alarm
- Multi-functional LC display
- Adjustable response delay
- Two-module enclosure (36 mm)
- Push-wire terminal (two terminals per connection)
Applications
- IEC 60364-7-717, DIN VDE 0100-717 (2005) Electrical installations in mobile or transportable units
- DIN VDE 0100-551 (VDE 0100-551), IEC 60364-5-551 Low-voltage generating sets (mobile generators)
- GW 308 “Mobile Stromerzeuger für Rohrleitungsbaustellen 8/00” (Mobile auxiliary power generators on pipeline site”) (DVGW)
- BGI 867 (German Berufsgenossenschaft Information) Auswahl und Betrieb von Ersatzstromerzeugern auf Bau- und Montagestellen (Selecting and operating standby generators on construction and installation sites)
ISOMETER® IR423 Variant(s)
| Type | Nominal system voltage* Un | Supply voltage* US | Art. No.** |
|---|---|---|---|
| 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 |
* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
Optional Accessories for ISOMETER® IR423
| Type | Art. No. |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
Downloads for ISOMETER® IR423
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| UKCA - IR42x | Declarations of Conformity | 177.1 KB | 2024/12/1010.12.2024 | ||
| RoHS/REACH Report - B71016304 | RoHS/REACH Report | 252.5 KB | 2024/09/0606.09.2024 | ||
| IR42x | CE Declarations of Conformity | 105.3 KB | 2024/12/1313.12.2024 | ||
| IR423 | Manuals | 2.3 MB | EN | 2024/09/2727.09.2024 | D00038 |
| IR423 | Datasheets | 577.1 KB | EN | 2024/12/1818.12.2024 | D00038 |
| Changed variants of relays from goldplated to silver-plated contacts | Technical Information | 166.3 KB | EN | 2022/06/2727.06.2022 |