ISOMETER® iso175
The ISOMETER® iso175 insulation monitoring device is designed for unearthed drive systems in hybrid, fuel cell, and electric vehicles.
The device reliably detects insulation faults, significantly contributing to both electrical safety and the availability of the electrical system. A key success factor is the use of an active, patented measurement method, which allows insulation monitoring even when the high-voltage system is de-energised, prior to the connection of the energy storage system.
Thanks to the integrated earth switch, no additional relays or contactors are required. The ISOMETER® iso175 also ensures reliable insulation measurements even with high system leakage capacitances of up to 10 μF. With its integrated CAN interface, the insulation monitoring device can be easily integrated into modern systems, providing additional information to support and simplify system analysis.
The ISOMETER® iso175 insulation monitoring device is designed for unearthed drive systems in hybrid, fuel cell, and electric vehicles.
The device reliably detects insulation faults, significantly contributing to both electrical safety and the availability of the electrical system. A key success factor is the use of an active, patented measurement method, which allows insulation monitoring even when the high-voltage system is de-energised, prior to the connection of the energy storage system.
Thanks to the integrated earth switch, no additional relays or contactors are required. The ISOMETER® iso175 also ensures reliable insulation measurements even with high system leakage capacitances of up to 10 μF. With its integrated CAN interface, the insulation monitoring device can be easily integrated into modern systems, providing additional information to support and simplify system analysis.
Features
- Suitable for 12 V and 24 V DC systems (supply voltage)
- Insulation monitoring of DC insulation faults for unearthed systems (IT systems) DC 0…1000 V
- Continuous measurement of insulation resistance RF_corrected = 0…35 MΩ (RF_original = 0…50 MΩ)
- Response time ≤ 30 s for insulation resistances ≤ 500 Ω/Volt and system leakage capacitances ≤ 2 μF
- Maximum system leakage capacitance up to 10 μF (High Capacity profile)
- Insulation measurement also possible when the HV system is de-energised
- Integrated self-diagnosis (online self-test)
- HV connection monitoring (offline self-test)
- Continuous monitoring of the earth connection
- Undervoltage detection
- Device disconnection possible via earth switch (Earthlift)
- Interfaces:
- Digital output for error messages (OKHS)
- CAN:
- Bender CAN
- CAN-SAE J1939
- All outputs short-circuit proof
- Load dump protection up to 58 V
- E1 qualification
Applications
- For unearthed drive systems (IT networks) in road vehicles, such as fuel cell, pure electric or hybrid vehicles
Long-Lasting Safety for E-Mobility in Public Transport
In modern electric buses, reliability, safety, and service life are critical. The ISOMETER® iso175 from Bender is specifically designed for use in electric commercial vehicles – and reliably supports your e-bus over a service life of more than one million kilometers. With a mean time between failures (MTBF) exceeding 139,000 hours in accordance with EN/IEC 61709, it continuously monitors high-voltage systems – even under demanding conditions such as continuous operation, vibration, and elevated temperatures.
The result: reliable insulation monitoring – for the entire lifetime of a city bus. ** A typical city bus covers around 1,000,000 kilometers over its lifetime. At an average urban driving speed of 25 km/h, this translates to approximately 40,000 hours of operation – equivalent to about 12–15 years of daily service.
ISOMETER® iso175 Variant(s)
Standard variants
| Type | Steckverbinder- Connector type (connection) | Interfaces | Standardconfiguration | Earth disconnector | Art. No. |
|---|---|---|---|---|---|
| iso175C-32-SS | TYCO1 | HS-CAN SAE J1939 | Baud rate: 500 kBaud Response value: 100 kΩ (Error), 500 kΩ (Warning) | ✓ | B91068201 |
| iso175C-42-SS | Samtec/Molex2 | HS-CAN SAE J1939 | Baud rate: 500 kBaud Response value: 100 kΩ (Error), 500 kΩ (Warning) | ✓ | B91068202 |
| iso175C-32-SB | TYCO1 | HS-CAN Bender | Baud rate: 500 kBaud Response value: 100 kΩ (Error), 500 kΩ (Warning) | ✓ | B91068203 |
| iso175C-42-SB | Samtec/Molex2 | HS-CAN Bender | Baud rate: 500 kBaud Response value: 100 kΩ (Error), 500 kΩ (Warning) | ✓ | B91068204 |
1 HV+ / HV- connections
| 2 HV+ / HV- connections
|
Cable recommendation for proper functioning of the offline self test: AlphaWire (Art. No. 5875)
Customer configuration*
| Type | Connector type (connection) | Interfaces | Customerconfiguration | Art. No. |
|---|---|---|---|---|
| See Standard variants | TYCO (side) or Samtec/Molex (top) | HS-CAN (SAE J1939 or Bender) | According to customer specifications | B91068200 |
* The list for customer configuration can be found in the Downloads area.
Optional Accessories for ISOMETER® iso175
| Description | Suitable for type | Art. No. |
|---|---|---|
| IR155 / iso175 fastening kit | All | B91068500 |
| IR155 / iso175 connection kit (TYCO) | iso175X-32-XX | B91068501 |
| IR155 /iso175 connection kit (Samtec/Molex) | iso175X-42-XX | B91068502 |
Downloads for ISOMETER® iso175
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| iso175 Wasserstoff | Flyer | 236.9 KB | DE | 2025/03/3131.03.2025 | |
| iso175 Hydrogen | Flyer | 226.7 KB | EN | 2025/03/3131.03.2025 | |
| Vehicle sensors. ISOMETER®iso175/IR155 | Product Brochures | 1.4 MB | 2024/05/2424.05.2024 | ||
| iso175 Kunden-Konfigurationsdatei | Device configuration | 595.1 KB | DE | 2024/10/0101.10.2024 | D00415 |
| iso175 Customer configuration file | Device configuration | 600.9 KB | EN | 2024/10/0101.10.2024 | D00415 |
| iso175 | Flyer | 362.4 KB | 2024/01/2525.01.2024 | D00415 | |
| iso175 | Flyer | 362.3 KB | FR | 2024/01/2525.01.2024 | D00415 |
| iso175 - Standard CAN Specification | Application note | 202.0 KB | 2023/10/3131.10.2023 | D00415 | |
| iso175 - SAE J1939 Specification | Application note | 211.4 KB | 2023/10/3131.10.2023 | D00415 | |
| We are your eMobility partner! | Flyer | 262.3 KB | 2023/11/2929.11.2023 | ||
| iso175 | Manuals | 4.4 MB | DE | 2024/08/1313.08.2024 | D00415 |
| iso175 | Manuals | 4.5 MB | EN | 2024/08/1313.08.2024 | D00415 |
| iso175 | Quickstarts | 412.0 KB | DE | 2024/08/1313.08.2024 | D00415 |
| iso175 | Quickstarts | 412.0 KB | EN | 2024/08/1313.08.2024 | D00415 |
| iso175 | Datasheets | 4.5 MB | DE | 2024/08/1313.08.2024 | D00415 |
| iso175 | Datasheets | 4.6 MB | EN | 2024/08/1313.08.2024 | D00415 |
