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Iso685-x-B

Product catalog summary

Intended Use
The ISOMETER® iso685(W)-x-B is designed to monitor insulation resistance in unearthed AC/DC main circuits (IT systems). It can extend the nominal voltage range via coupling devices and is unaffected by DC components in AC/DC systems. It also allows monitoring of de-energised systems with a separate supply voltage.

Device Features

Automatic adaptation to system leakage capacitance.
Two adjustable response value ranges from 1 kΩ to 10 MΩ.
Graphical LC display and connection monitoring.
Automatic self-test and graphical representation of insulation resistance over time.
History memory for storing alarm messages with date and time.
Remote setting and diagnosis via Internet or Intranet.
Communication via Modbus RTU, Modbus TCP, and web server.

Product Description
The ISOMETER® iso685 complies with IEC 61557-8 and is applicable in various AC, 3(N)AC, AC/DC, and DC systems. It features different variants, including the iso685-D with an integrated display and the iso685-S sensor variant, which requires a front panel for operation.

Function Description
The device continuously monitors insulation resistance and triggers an alarm if it falls below a preset value. It uses a microprocessor-controlled measuring circuit and stores settings in a fail-safe memory. The device can be configured for different system types and extended with coupling devices for a wider voltage range.

Interfaces

Modbus TCP and RTU for communication.
BCOM for Ethernet communication.
RS-485 for sensor bus communication.
Integrated web server for parameter settings.

Variants

iso685(W)-D: Includes a graphical LC display.
iso685(W)-S: Operated with FP200(W) and lacks a display.

Connection
Details on connection requirements, including power supply, system monitoring, and relay interfaces. Emphasizes the need for proper connection checks and functional tests before commissioning.

Technical Data

Rated voltage: 1000 V, Overvoltage category III.
Supply voltage range: AC/DC 24…240 V.
Nominal system voltage range: AC 0…690 V, DC 0…1000 V.
Response values: 1 kΩ to 10 MΩ with a relative uncertainty of ±15%.
Measuring range: 0.1 kΩ to 20 MΩ.

Specifications

Alarms: Includes DC− alarm, DC+ alarm, symmetrical alarm, device error, common alarm, measurement complete, device inactive, and DC offset alarm. Note that DC alarms are applicable only for Un ≥ 50 V.
Electrical Endurance: Rated for 10,000 operating cycles under specified conditions.
Contact Data: Complies with IEC 60947-5-1, with various utilization categories and rated operational voltages and currents.
Environmental Conditions: Operating temperature ranges from −25 to +55 °C, with transport and storage conditions specified. EMC compliance is according to IEC 61326-2-4.

Connection Details

Screw-type Terminals: Nominal current ≤ 10 A, with specific conductor sizes and stripping lengths.
Push-wire Terminals: Nominal current ≤ 8 A, with detailed wire cross-section specifications.

Mechanical and Environmental Standards

Complies with IEC 60721 for climatic and mechanical conditions, with specific classifications for stationary use, transport, and long-term storage.
Mounting options include DIN rail and screw mounting, with specific requirements for best ventilation and temperature management.

Standards and Certifications

Developed in compliance with standards such as DIN EN 61557-8 and IEC 61557-8.

Ordering and Accessories

Various models and options are available, including increased shock and vibration resistance versions.
Accessories include mechanical components and connector kits.

Additional Information

Dimensions and weight are specified, along with material and flammability class.
Contact information for Bender GmbH & Co. KG is provided for further inquiries.

Catalog excerpts

ISOMETER® iso685(W)-x-B Insulation Monitoring Device for IT AC systems with galvanically connected rectifiers and inverters and for IT DC systems Image similar

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The ISOMETER® monitors the insulation resistance of unearthed AC/DC main circuits (IT systems). For the iso685-x and iso685-x-B types, the operating range of the nominal voltage Un can be extended via coupling devices. DC components existing in AC/DC systems do not influence the operating characteristics. A separate supply voltage allows de-energised systems to be monitored too. The maximum permissible system leakage capacitance is provided in the technical data. Kr BENDER Insulation Monitoring Device for IT AC systems with galvanically connected rectifiers and inverters and Device features •...

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Function description The insulation monitoring device continuously monitors the entire insulation resistance of an IT system during operation and triggers an alarm when the value falls below a preset response value. For measurement, the device has to be connected between the IT system and the protective earth conductor (PE). A measuring current in the µA range is superimposed onto the system which is recorded and evaluated by a microprocessorcontrolled measuring circuit. The measuring time is dependent on the selected measurement profiles, the system leakage capacitance, the insulation resistance...

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Graphic LC display and operating controls. Cannot be combined with the FP200(W). No display and no operating controls. Can only be operated in combination with the FP200(W).

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A ji3l A riTTTTTI 111ITTTT11111 rnTTI 111 miTI 111ITTTT1 Connection to the power supply voltage Us Connector for the IT system to be monitored Connector for the IT system to be monitored Connector for the IT system to be monitored Connection to PE Multifunctional I/O interface Ethernet interface Switchable terminating resistor for termination of the RS-485 interface Connector for alarm relay 1 Connector for alarm relay 2 isoxx685(W)-x-P... only: optional expansion interface for Bender products J The connection between the iso685 device and an FP200(W) can be interrupted and restored at any time...

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Connection requirements Connection to a supply voltage J Check proper connection! Prior to commissioning the installation, check that the device has been properly connected and check the device functions. Perform a functional test using an earth fault via a suitable resistance. Prevent measurement errors! If a monitored AC system contains galvanically coupled DC circuits, the following applies: An insulation fault can only be detected with its correct value when the rectifier valves carry a minimum current of > 10 mA. Use 60/75 °C copper lines only! For UL and CSA applications, the supply voltage...

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Connection with standard patch cable (RJ45/no crossover cable) to other ISOMETER®s or interconnection of several ISOMETER®s in star topology via a switch. Connection using the AGH204S-4 (Art. No.: B914013) Nominal voltage with rectifier: Nominal voltage without rectifier: AC 0...1650 V Relative uncertainty: For further connection examples, see manual.

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Technical data Measuring circuit (IC1) Supply circuit (IC2) Output circuit 1 (IC3) Output circuit 2 (IC4) Control circuit (IC5) IT system being monitored Nominal system voltage range Un AC 0.690 V Nominal system voltage range Un for UL applications AC/DC 0.600 V Max. alternating voltage U~ (for f < 4 Hz) Umax = 50 V x (1 + f,2) Rated impulse voltage Response values Response value Rani (ALARM 1) 1 kO . 10 MO Response value Ran2 (ALARM 2) 1 kO . 10 MO Relative uncertainty (acc. to IEC 61557-8) profile-dependent, ±15 %, min. ±1 kO Rated insulation voltage Pollution degree outside (Un < 690 V) 3...

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SERVICE yellow Interface / protocol Data rate Mode 1 Cable: twisted pairs, shield connected to PE on one side recommended: J-Y(St)Y min. 2x0.8 Cable length (depending on the baud rate) Cable length X1 (unshielded cable) < 10 m Cable length X1 (shielded cable, shield connected to PE < 100 m on one side) recommended: J-Y(St)Y min. 2x0.8 Max output current for supply via X1+/X1GND per output 1 A Max output current for supply via A1/A2 in total on X1 200 mA Max output current for supply via A1/A2 in total on X1 I_maxxi = 10 mA + 7 mA / V x Us’ * Us is the supply voltage of the ISOMETER®. Negative...

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continuous operation display-oriented * IP40 IP20 IEC 60715 3 x M4 with mounting clip polycarbonate V-0 Screw-type terminals Nominal current Tightening torque Conductor sizes Wire cross-section flexible with ferrule with/without plastic sleeve 0.25___2.5 mm2 Multiple conductor, rigid 0.2___1 mm2 Multiple conductor, flexible 0.2 1.5 mm2 Multiple conductor, flexible with ferrule without plastic sleeve 0.25___1 mm2 Multiple conductor, flexible with TWIN ferrule with plastic sleeve 0.5___1.5 mm2 Push-wire terminals Wire cross-section flexible with ferrule with/without plastic sleeve 0.25 2.5 mm2...

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The ISOMETER® has been developed in compliance with the following standards: Ordering details Suitable system components Option W: Increased shock and vibration resistance 3K23; 3M12; Bezeichnung -40.. .+70 °C included in the scope of delivery Only available with separate FP200(W) panel Coupling devices

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Bender GmbH & Co. KG Londorfer Straße 65 35305 Grünberg Germany Tel.: +49 6401 807-0 [email protected] www.bender.de © Bender GmbH & Co. KG, Germany Subject to change! The specified standards take into account the edition valid until 10.2025 unless otherwise indicated.

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Iso685-x-B

Iso685-x-B

Catalog excerpts

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