ISOMETER® isoNAV685-D
- Instantaneous tripping 150 ms
- Inverter disconnection
- Modbus TCP
- Tripping on shift voltage
The ISOMETER® isoNAV685-D is a ground-fault monitoring device for IT systems in accordance with IEC 61557-8. It is applicable for use in 3(N)AC systems with nominal system frequency 60 Hz.
- Instantaneous tripping 150 ms
- Inverter disconnection
- Modbus TCP
- Tripping on shift voltage
The ISOMETER® isoNAV685-D is a ground-fault monitoring device for IT systems in accordance with IEC 61557-8. It is applicable for use in 3(N)AC systems with nominal system frequency 60 Hz.
Features
- ISOMETER® for IT AC systems with galvanically connected rectifiers or inverters and for IT DC systems (IT = unearthed systems)
- Automatic adaptation to the existing system leakage capacitance
- Combination of AMPPLUS and other profile-dependent measurement methods
- An adjustable response value for insulation monitoring in the range of 1 kΩ…10 MΩ (factory setting = 5 kΩ) and a response value of 150 V for the DC offset voltage
- High-resolution graphic LC display for excellent readability and recording of the device status
- Connection monitoring (monitoring of the measuring lines)
- Automatic device self test
- Graphical representation of the insulation resistance over time (isoGraph)
- History memory with real-time clock (buffer for three days) for storing 1023 alarm messages with date and time
- Current or voltage output 0(4)…20 mA, 0…400 μA, 0…10 V, 2…10 V (galvanically separated) which is analogous to the measured insulation value of the system
- Freely programmable digital inputs and outputs
- Remote setting via the Internet or Intranet (Webserver/Option: COMTRAXX® gateway)
- Worldwide remote diagnosis via the Internet (made available by Bender Service only)
- BCOM, Modbus TCP and web server
Applications
- AC/DC main circuits with directly connected DC components, such as rectifiers, converters, variable-speed drives
- Systems including switch-mode power supplies
- Systems including frequency inverters
ISOMETER® isoNAV685-D Variant(s)
| Type | Nominal system voltage range Un | Supply voltage US | Art. No. |
|---|---|---|---|
| isoNAV685-D | AC 0…690 V; 1…460 Hz/DC 0…1000 V | AC 24…240 V; 50…400 Hz / DC 24…240 V | B91067014 |
Optional Accessories for ISOMETER® isoNAV685-D
| Type designation | Art. No. |
|---|---|
| A set of screw terminals* | B91067901 |
| A set of push-wire terminals | B91067902 |
| Enclosure accessories (terminal cover, 2 mounting clips)* | B91067903 |
* included in the scope of delivery
Suitable measuring instruments on request!
Downloads for ISOMETER® isoNAV685-D
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| TÜV NORD - isox685x und FP200x | Certificates | 436.6 KB | DE | 2023/10/1111.10.2023 | |
| TÜV NORD - isox685x and FP200x | Certificates | 415.9 KB | EN | 2023/10/1111.10.2023 | |
| UKCA - iso685 | Declarations of Conformity | 140.4 KB | 2023/07/1414.07.2023 | ||
| iso685 | CE Declarations of Conformity | 87.5 KB | 2023/07/1414.07.2023 | ||
| isoNAV685-D | Quickstarts | 1.1 MB | EN | 2024/05/2929.05.2024 | D00215 |
| isoNAV685-D | Manuals | 2.6 MB | EN | 2019/05/1313.05.2019 | D00215 |
| isoNAV685-D | Datasheets | 1.6 MB | EN | 2021/03/1111.03.2021 | D00215 |
| iso685 | Product Brochures | 2.2 MB | EN | 2025/02/1111.02.2025 | D00022 |
