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BENDER GmbH & Co KG
ISOMETER® isoNAV685-D

ISOMETER® isoNAV685-D

Product catalog summary

Product Overview: The ISOMETER® isoNAV685-D is an insulation monitoring device for IT AC systems with rectifiers and converters, compliant with IEC 61557-8, suitable for 3(N)AC systems at 60 Hz.

Applications: It is used in AC/DC circuits with DC components, switch-mode power supplies, and frequency inverters.

Functionality: The device monitors insulation resistance, issuing warnings if resistance drops below a set value or if DC offset voltage exceeds a threshold. It connects between the IT system and the protective earth conductor, using a micro-controlled circuit for evaluation.

Features: Includes automatic adaptation to system leakage capacitance, adjustable response values, high-resolution LC display, connection monitoring, automatic self-test, and remote settings via the Internet.

Interfaces: Supports Modbus TCP, BCOM for Ethernet, and has an integrated web server for parameter settings.

Measurement Method: Utilizes the patented AMPPlus method for effective monitoring with high system leakage capacitances.

Standards and Certifications: Complies with DIN EN 61557-8 and IEC 61557-8.

Operating Elements: Features LEDs for power, service, and alarms, a graphical display, and navigation/reset buttons.

Wiring Diagram: Provides connection instructions, including alarm relay and Ethernet interface connections.

Technical Data: Details insulation coordination, supply voltage, response values, time response, measuring circuit, and environmental conditions.

Environmental and Mechanical Conditions: Specifies operating temperatures, EMC compliance, and mechanical classifications.

Connection Details: Describes connection types, terminal specifications, and conductor sizes.

Specifications:

Conductor Sizes: Single conductor (0.25–2.5 mm²), Multiple conductor (0.5–1.5 mm²)
Push-wire Terminals X1: Nominal current ≤ 8 A, Conductor sizes AWG 24-16

Operating Conditions:

Continuous operation
Display oriented mounting
Degree of protection: IP40 (internal), IP20 (terminals)
DIN rail mounting
Polycarbonate enclosure
Flammability class V-0

Additional Notes:

Insulation required for X1 connection at frequencies > 200 Hz
Fast tripping only in 60 Hz IT networks
Indication limited outside -25 to +55 °C
Class A product may cause radio interference

Accessories:

Screw-type terminals set: Art. No. B91067901
Push-wire terminals set: Art. No. B91067902
Enclosure accessories: Art. No. B91067903

Ordering Information:

Nominal system voltage: AC 0–690 V, DC 0–1000 V
Supply voltage: AC/DC 24–240 V
Type: isoNAV685-D, Art. No. B91067014

Manufacturer: BENDER Group, Bender GmbH & Co. KG, Germany. Contact: Tel.: +49 6401 807-0, Email: [email protected], Website: www.bender.de

Catalog excerpts

Insulation monitoring device for IT AC systems with galvanically connected rectifiers and converters data info

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ISOMETER® isoNAV685-D Insulation monitoring device for IT AC systems with galvanically connected rectifiers and converters Device features • ISOMETER® for IT AC systems with galvanically connected rectifiers or inverters and for IT DC systems • Automatic adaptation to the existing system leakage capacitance • Combination of AMPPus and other profile-dependent measurement methods • An adjustable response value for insulation monitoring in the range of 1 kfi.10 MO (factory setting = 5 kfi) and a response value of 150 V for the DC offset voltage • High-resolution graphic LC display for excellent...

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AC/DC Interfaces • Communication protocol Modbus TCP • BCOM for Bender device communication via Ethernet • Integrated web server for reading out measured values and for parameter setting Measurement method The isoNAV685 series uses the patented AMPPlus measurement method. This measurement method allows concise monitoring of modern power supply systems, also in case of extensive, directly connected DC components and high system leakage capacitances. The ISOMETER® has been developed in compliance with the following standards: Operating elements jjoojj jjoojj E& BENDER iso685 DATA INFO 1 - ON The...

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Wiring diagram g*p i 1 - Connection to a 3(N)AC system 2 - Supply voltage Us (see nameplate) via 6 A fuse 3 - Connection to the IT system to be monitored (L1/+, L2, L3/-) 5 - (K1) Alarm relay 1, available changeover contacts 6 - (K2) Alarm relay 2, available changeover contacts 7 - Switchable resistor R for RS-485 bus termination 0 0 on8 7Note: According to DIN VDE 0100-430, devices for protection against a short-circuit can be omitted for the coupling of terminals L1/+, L2, L3/-to the IT system < 690 V to be monitored if the wiring is carried out in such a manner as to reduce the risk of a short-circuit...

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Dimension diagram Dimensions in mm 108 Digital interface X1 Digital interface Input 1 Input 2 Input 3 RS-485 A RS-485 B +24 V Output 1 Output 2 Analogue output Ground Deactivate Device high active TEST RESET +24 V + Q1 Q2 M+ active adjustable passive adjustable Danger of damage to property due to faulty connections! The device can be damaged if the unit is simultaneously connected to the supply voltage via the X1 interface and via A1/+, A2/-. Do not connect the device simultaneously via X1 and A1/+, A2/- to different supply voltages. Danger of damage to property due to incorrect nominal voltage!...

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Insulation coordination according to IEC 60664-1/IEC 60664-3 Definitions: Measuring circuit (IC1) Supply circuit (IC2) Output circuit 1 (IC3) Output circuit 2 (IC4) Control circuit (IC5) Rated voltage Overvoltage category Rated impulse voltage: Measuring circuit Measuring current lm Internal resistance R, Zi Permissible extraneous DC voltage Ufg Permissible system leakage capacitance Ce Rated insulation voltage: Pollution degree for accessible parts on the outside of the device housing (Un < 690 V) 3 Pollution degree for accessible parts on the outside of the device housing (Un >690 < 1000 V)...

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Technical data (continuation) Interfaces Interface/protocol Data rate Max. amount Modbus requests Cable length Network mask BCOM address web server/Modbus TCP/BCOM 10/100 Mbit/s, autodetect DHCP/manual 192.168.0.5 255.255.255.0 system-1-0 communication interface Switching elements Number of switching elements 2 changeover contacts Operating mode N/C operation/N/O operation Contact 11-12-14/21-22-24 none, insulation Alarm 1, insulation fault + DC residual voltage, connection fault, device fault, collective alarm, measurement ended, device inactive Electrical endurance under rated operating conditions,...

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Ordering information Nominal system voltage range Un A set of screw-type terminals1) A set of push-wire terminals Enclosure accessories (terminal cover, 2 mounting clips) 1) included in the scope of delivery Suitable measuring instruments on request! Bender GmbH & Co. KG Londorfer Straße 65 • 35305 Grünberg • Germany Tel.: +49 6401 807-0 • [email protected] • www.bender.de BENDER Group isoNAV685-D_D00215_05_D_XXEN / 03.2021 / © Bender GmbH & Co. KG, Germany – Subject to change! The specified standards take into account the edition valid until 03.2021 unless otherwise i

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ISOMETER® isoNAV685-D

ISOMETER® isoNAV685-D

Catalog excerpts

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