ISOMETER® iso685 Series
- Ground-fault monitoring device that measures insulation resistance in ungrounded AC and DC systems, including systems with adjustable-speed drives and power conversion equipment
- Minimizes unplanned outages and eliminates the need to interrupt power to identify faulted circuits
- Proactively plan system maintenance by trending insulation deterioration over time
- Eliminates labor-intensive fault location procedures by identifying faulted circuits automatically when paired with a Bender EDS
The iso685 is the latest generation ground-fault detector for ungrounded AC and DC systems, as well as systems with power conversion equipment such as variable frequency drives and inverters, offering exceptional ground fault protection. Using the latest in monitoring technology, the iso685 provides accurate insulation resistance readings on virtually all types of power systems and control systems, with simple installation, setup, and operational features. This device meets or exceeds the requirements of NEC 250.21(B), NEC 250.167(A), and CEC 10-400 for ground detectors in ungrounded systems.
The iso685 connects directly to systems up to 690 VAC or 1000 VDC, and up to 12 kV with optional accessories. Insulation resistance is continuously monitored, allowing for detection and trending of developing ground faults before leakage current may be present. Predefined profiles simplify initial setup and tailor settings to application-specific requirements. Measured values are displayed in real-time on the device's display and via standard Modbus and web server communications.
- Ground-fault monitoring device that measures insulation resistance in ungrounded AC and DC systems, including systems with adjustable-speed drives and power conversion equipment
- Minimizes unplanned outages and eliminates the need to interrupt power to identify faulted circuits
- Proactively plan system maintenance by trending insulation deterioration over time
- Eliminates labor-intensive fault location procedures by identifying faulted circuits automatically when paired with a Bender EDS
The iso685 is the latest generation ground-fault detector for ungrounded AC and DC systems, as well as systems with power conversion equipment such as variable frequency drives and inverters, offering exceptional ground fault protection. Using the latest in monitoring technology, the iso685 provides accurate insulation resistance readings on virtually all types of power systems and control systems, with simple installation, setup, and operational features. This device meets or exceeds the requirements of NEC 250.21(B), NEC 250.167(A), and CEC 10-400 for ground detectors in ungrounded systems.
The iso685 connects directly to systems up to 690 VAC or 1000 VDC, and up to 12 kV with optional accessories. Insulation resistance is continuously monitored, allowing for detection and trending of developing ground faults before leakage current may be present. Predefined profiles simplify initial setup and tailor settings to application-specific requirements. Measured values are displayed in real-time on the device's display and via standard Modbus and web server communications.
Features
- Ground-fault detector for ungrounded single-phase AC, three-phase AC, and DC systems
- Meets or exceeds code requirements for ground-fault detection on ungrounded systems, including NEC 250.21(B), NEC 250.167(A), and CEC 10-106(2)
- Works with mixed AC/DC systems, including systems with power conversion equipment such as variable frequency drives and inverters
- Monitors for ground faults by measuring the system's insulation resistance, allowing for early indication and trending of developing faults before leakage current may be present
- Two separately adjustable insulation resistance values from 1 kΩ to 10 MΩ
- Incorporates multiple measurement principles to ensure optimal accuracy on virtually any system type
- Predefined system profiles simplify setup and tailor operational settings to specific applications
- Easy-to-use, on-board menu for managing settings
- Advanced system trending via on-board, time-based graphing
- A variety of outputs, including relay contacts and analog outputs
- Built-in web server allows for viewing device status in real-time from any connected PC or mobile device
- Native Modbus/TCP slave capability
- Additional option for external, panel-mount HMI
- Additional option for tiebreaker support - ensure all systems remain monitored regardless of tiebreaker status
- Additional option for fault location - locate ground faults quickly and automatically when combining the iso685 with EDS440 series fault location modules
- ANSI 64 ground detector relay
- Relay outputs, built-in web server, and built-in Modbus/TCP support
- Additional options for external panel-mount HMI, tiebreaker support, and fault location (when combined with additional equipment)
Applications
- General-purpose ground-fault detection for power distribution per code requirements including NEC 250.21(B), NEC 250.167(A), and CEC 10-106(2)
- DC and mixed AC/DC systems
- Systems with power conversion equipment, including variable frequency drives and inverters
- Large power distribution networks requiring fast ground-fault location
- Battery backup systems
- Ships
ISOMETER® iso685 Series Variant(s)
| Part No. | Built-in Display | Panel-mount HMI | Tiebreaker Support | Fault Location Compatible | Ordering No. |
|---|---|---|---|---|---|
| iso685-D | Yes | -- | -- | -- | B91067010 |
| iso685-S+FP200 | -- | Yes | -- | -- | B91067210 |
| iso685-D-B | Yes | -- | Yes | -- | B91067020 |
| iso685-S-B+FP200 | -- | Yes | Yes | -- | B91067220 |
| iso685-D-P | Yes | -- | -- | Yes | B91067030 |
| iso685-S-P+FP200 | -- | Yes | -- | Yes | B91067230 |
All models are available with additional climate and mechanical protection. Refer to datasheet for more information.
Optional Accessories for ISOMETER® iso685 Series
Voltage couplers for extending supported system voltage range
| Part No. | Extends Voltage Range To | Ordering No. |
|---|---|---|
| AGH150W-4 | Up to 1150 VAC / 1760 VDC | B98018006 |
| AGH204S-4 | Up to 1650 VAC-1ph / 1300 VAC-3ph | B914013 |
| AGH520S | Up to 7200 VAC | B913033 |
| AGH676S-4 | Up to 12 kVAC | B913055 |
Downloads for ISOMETER® iso685 Series
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| RoHS/REACH Report - B91067010 | RoHS/REACH Report | 261.2 KB | 2024/09/0606.09.2024 | ||
| 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 | ||
| FP200 | Datasheets | 548.6 KB | EN | 2023/07/3131.07.2023 | D00179 |
| FP200 | CE Declarations of Conformity | 82.4 KB | 2022/08/1212.08.2022 | ||
| iso685 | CE Declarations of Conformity | 87.5 KB | 2023/07/1414.07.2023 | ||
| iso685 | Product Brochures | 1.8 MB | EN | 2019/05/1313.05.2019 | D00022 |
| iso685-… | Quickstarts | 1.6 MB | EN | 2024/02/2828.02.2024 | D00022 |
| iso685-… Modbus settings | Manuals | 3.7 MB | EN | 2024/10/2828.10.2024 | D00022 |
| iso685-x | Manuals | 8.3 MB | EN | 2024/09/1818.09.2024 | D00022 |
| FP200 | Quickstarts | 3.2 MB | EN | 2023/07/3131.07.2023 | D00179 |
| iso685-x | Datasheets | 4.5 MB | EN | 2024/10/3131.10.2024 | D00022 |
| iso685-… web server | Manuals | 208.1 KB | EN | 2024/10/2828.10.2024 | D00022 |
| Commissioning iso685-S… devices without a connected Display FP200(W) | Manuals | 1.4 MB | EN | 2021/06/1010.06.2021 | D00022 |
| iso685(W)-S/D Update V1.29 | Software | 6.2 MB | 2021/11/1717.11.2021 |