ISOMETER® IR420-D4
- Insulation monitoring device for AC IT systems
- Application control circuits
- According to IEC 61557-8
- Two separately configurable response values
- Multi-functional LC display
The ISOMETER® IR420-D4 monitors the insulation resistance of unearthed AC control circuits (IT systems) 0…300 V. If the systems to be monitored include DC components, such as switched-mode power supplies or solenoid valves, the display and operating characteristics may be affected.
The display and response values apply to pure AC systems. An external supply voltage allows de-energised systems to be monitored too.
- Insulation monitoring device for AC IT systems
- Application control circuits
- According to IEC 61557-8
- Two separately configurable response values
- Multi-functional LC display
The ISOMETER® IR420-D4 monitors the insulation resistance of unearthed AC control circuits (IT systems) 0…300 V. If the systems to be monitored include DC components, such as switched-mode power supplies or solenoid valves, the display and operating characteristics may be affected.
The display and response values apply to pure AC systems. An external supply voltage allows de-energised systems to be monitored too.
Features
- Insulation monitoring for IT control circuits AC 0…300 V
- Two separately adjustable response values
- Preset function (automatic assignment of basic parameters)
- Connection monitoring system/earth
- LEDs: Power On, 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 message
- Multi-functional LC display
- Adjustable response delay
- Two-module enclosure (36 mm)
- RoHS-compliant
- Push-wire terminal (two terminals per connection)
Applications
- AC control circuits in the industrial sector, mechanical engineering, power plants, elevators, automation systems etc.
- AC control and auxiliary circuits in accordance with IEC 60204-1 / DIN EN 60204-1 Electrical equipment of machines
- AC auxiliary circuits in accordance with DIN VDE 0100-725 (VDE 0100-725)
- Smaller AC IT systems such as lighting systems, mobile generators
ISOMETER® IR420-D4 Variant(s)
| Type | Nominal system voltage* Un | Supply voltage* US | Response value Ran | System leakage capacitance Ce | Art. No.** |
|---|---|---|---|---|---|
| IR420-D4-1 | AC 0…300 V, 42…460 Hz | DC 9,6…94 V / AC 16…72 V, 42…460 Hz | 1…200 kΩ | < 20 µF | B71016409 B91016409 |
| IR420-D4-2 | AC 0…300 V, 42…460 Hz | DC 70…300 V / AC 70…300 V, 42…46 Hz | 1…200 kΩ | < 20 µF | B71016405 B91016405 |
* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
Optional Accessories for ISOMETER® IR420-D4
| Type | Art. No. |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
Downloads for ISOMETER® IR420-D4
| Category | Name | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| Declarations of Conformity | UKCA - IR42x | 140.6 KB | 2022/12/20 05:59:3520.12.2022 05:59:35 | ||
| CE Declarations of conformity | IR42x | 94.2 KB | 2022/08/12 06:17:2412.08.2022 06:17:24 | ||
| Manuals | IR420-D4 | 918.5 KB | DE | 2019/05/13 10:31:4113.05.2019 10:31:41 | D00037 |
| Manuals | IR420-D4 | 918.5 KB | EN | 2019/05/13 10:31:4113.05.2019 10:31:41 | D00037 |
| Manuals | IR420-D4 | 921.8 KB | ES | 2019/05/13 10:31:5413.05.2019 10:31:54 | D00037 |
| Manuals | IR420-D4 | 375.0 KB | FR | 2019/05/13 10:31:5413.05.2019 10:31:54 | D00037 |
| Datasheets | IR420-D4 | 327.3 KB | DE | 2019/05/13 10:31:3413.05.2019 10:31:34 | D00037 |
| Datasheets | IR420-D4 | 281.3 KB | EN | 2019/05/13 10:31:3513.05.2019 10:31:35 | D00037 |
| Datasheets | IR420-D4 | 273.6 KB | ES | 2019/05/13 10:31:3713.05.2019 10:31:37 | D00037 |
| Datasheets | IR420-D4 | 131.1 KB | ZH | 2019/05/13 10:31:3313.05.2019 10:31:33 | D00037 |
| Technical information | Changed variants of relays from goldplated to silver-plated contacts | 166.3 KB | EN | 2022/06/27 09:03:0827.06.2022 09:03:08 | |
| Technical information | Geänderte Relaisvarianten von vergoldeten Kontakten auf versilberte Kontakte | 166.3 KB | DE | 2022/06/27 09:03:0827.06.2022 09:03:08 |