BENDER ISOEV425-D4-4 Insulation Monitoring Device

• Real-time Insulation Monitoring：Continuously monitor the insulation resistance of the DC system to the ground, accurately capture the downward trend of insulation, and early warn of potential faults.​

• Multi-channel Monitoring：Supports simultaneous monitoring of 4 DC circuits, and alarm thresholds can be set separately to meet the monitoring needs of multi-circuit systems.​

• Fault Location Assistance：Assist in locating insulation fault points by analyzing the insulation status changes of each circuit, shortening the troubleshooting time.​

• Alarm Output：Equipped with relay alarm output function, it can timely send out sound and light alarm signals when the insulation resistance is lower than the set value.​

• Monitoring Range：Insulation resistance 0.1kΩ-10MΩ, DC system voltage 24V-440V DC.​

• Measurement Accuracy：±5% (within 0.5kΩ-10MΩ).​

• Response Time：≤1s (when insulation resistance drops sharply to alarm value).​

• Alarm Threshold：Manually settable, range 0.5kΩ-10MΩ.​

• Working Environment：Temperature -25℃-+70℃, relative humidity ≤95% (no condensation).​

• Power Supply Requirements：AC 220V±15%, 50Hz/60Hz; or DC 24V±10%.​

• Output Interface：2 relay outputs (alarm, fault), capacity AC 250V/5A, DC 30V/5A.​

• Communication Interface：RS485, supporting Modbus RTU protocol, easy to connect to upper computer system.​

• Power System：Used in DC operating power systems of substations and power plants to monitor the insulation status of control circuits and signal circuits, ensuring reliable operation of power equipment.​

• Industrial Automation：In DC drive systems and emergency power systems in metallurgy, chemical industry and other industries, monitor insulation conditions to prevent equipment shutdown due to insulation faults.​

• Rail Transit：Suitable for DC traction systems and on-board DC power supplies of subways and high-speed railways to ensure driving safety.​

• Data Center：Monitor the insulation of UPS DC battery packs and related circuits to ensure the continuity of power supply in data centers.​

The structure and details of the product：

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