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
The ISOMETER® of the IRDH575 series monitors the insulation resistance of unearthed power supplies (IT systems). It is suitable for universal use in 3(N)AC, AC/DC and DC systems. AC systems may include extensive DC-supplied loads, such as converters or thyristor-controlled DC drives. The IRDH575 in combination with EDS4… series insulation fault locators and the appropriate measuring current transformers is designed to set up the respective equipment for insulation fault location.
- 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 | Date | Size | Download |
|---|