ISOMETER® IRDH575
- Insulation monitoring device for AC and DC IT systems
- Application main circuits with connected frequency converters
- Isometer disconnecting relay for the operation of several ISOMETER®s in interconnected IT systems
- Display and control function for EDS insulation fault location systems
- Can be extended to operate as equipment for insulation fault location
- This device series is in the discontinuation phase. -
Available until 31.12.2023.
- Features
- Applications
- Accessories
- Ordering information
- Downloads
- Universal application in 3(N)AC, AC/DC and DC IT systems 20…575 V/340…760 V
- Response range 1 kΩ…10 MΩ
- Info button for the indication of various parameters and the system leakage capacitance
- Comprehensive self-monitoring function including system fault alarm relay
- Internal/external test and reset button
- Two separate alarm relays, N/C or N/O operation selectable
- Backlit plain text display 4 x 16 characters
- RS-485 interface
- Data memory, disconnection from supply and 0/4…20 mA current output
- Can be extended to an insulation fault location system for max.1080 circuits
- Adjustable locating current for insulation fault location
- Appropriate for EDS4… insulation fault location systems
- AMP measurement method
- Insulation resistance monitoring in IT systems
- Localisation of insulation faults with additional insulation fault locators EDS4…
Optional accessories for ISOMETER® IRDH575
Protection against dust and moisture
Adaptor for rail mounting
Measuring instruments
| Type | Dimensions | Art. No. |
|---|---|---|
| Panel sealing, degree of protection IP42 | 144 x 96 mm | B98060006 |
| Transparent cover, degree of protection IP65 | 144 x 96 mm | B98060007 |
Adaptor for rail mounting
| Type | Art. No. |
|---|---|
| Adaptor for rail mounting | B98060010 |
The adaptor allows fast mounting of the IRDH575 on a DIN rail
according to IEC 60715.
Measuring instruments
| Type | Measuring range | Dimensions | Art. No. |
|---|---|---|---|
| 9620-1421 | 0…20 mA | 96 x 96 mm | B986841 |
| 9620S-1421 | 0…20 mA | 96 x 96 mm | B986842 |
Variants of ISOMETER® IRDH575
| Type | Nominal system voltage Un | Supply voltage US | Art. No. |
|---|---|---|---|
| IRDH575B1-427 | AC / DC 20…575 V | DC 19.2…72 V | B91065502 |
| IRDH575B1-435 | 3(N)AC / DC 20…575 V* | AC 88…264 V / DC 77…286 V* | B91065500 |
| IRDH575B1-4227** | 3(N)AC / DC 20…150 V* | DC 19.2…72 V* | B91065505 |
| IRDH575B1-4235 | AC / DC 20…150 V | AC 88…264 V / DC 77…286 V | B91065504 |
| IRDH575B2-427 | 3(N)AC 340…760 V / DC 340…575V* | DC 19.2…72 V | B91065506 |
| IRDH575B2-435 | 3(N)AC 340…760 V / DC 340…575 V* | AC 88…264 V / DC 77…286 V* | B91065503 |
* Absolute values
** Measuring voltage Um 10 V
Downloads for ISOMETER® IRDH575
| Category | Product | Language | Size | Download |
|---|