Description

The IRDH575 is used for online insulation resistance monitoring and fault location in ungrounded IT systems (AC/DC/AC/DC hybrid). Common models include IRDH575B1-435, IRDH575B2-435, and the reinforced version with a W rating (for marine/vibration environments).

The product images shown are not actual photos. There are still more models that have not been launched yet.For more details or price negotiations, please contact us: Email: sales@fyplc.cn | WhatsAPP: +86 15359458915

Core Parameters

Brand: Bender (Germany)

Applicable Systems: 3 (N) AC / AC/DC / DC IT Systems

System Voltage Un:

B1 Type: AC/DC 20…150 V

B2 Type: 3 (N) AC 340…760 V / DC 340…575 V

Power Supply Voltage Us:

Standard: AC 88…264 V / DC 77…286 V

A DC 24…72 V version also available

Insulation Monitoring Range: 1 kΩ … 10 MΩ (Adjustable two-level alarm)

Display: 4×16 Backlit LCD Chinese / English

Interface: RS-485 (BMS protocol), 0/4…20 mA isolated output

Alarm Relays: 2 independent channels (configurable normally open / normally closed) + system fault common alarm

Functions: Real-time insulation monitoring, historical record (with RTC clock), fault circuit location with EDS460/470/490

Protection / Dimensions: Panel mount 96×144 mm, IP42 (panel)

W Reinforced: Vibration resistant, wide temperature range, for marine, rail transportation, and offshore platforms

Typical Models
IRDH575B1-427: Low voltage AC/DC 20–150 V, DC 24–72 V power supply
IRDH575B1-435: Low voltage AC/DC 20–150 V, AC/DC 88–264 V power supply
IRDH575B2-435: Medium to high voltage 340–760 V, AC/DC 88–264 V power supply
IRDH575B2W-435: B2+ Reinforced (W)

Application Scenarios
Medical IT power distribution (operating room/ICU)
Wind power generation, photovoltaic DC systems
Petrochemical/chemical, offshore platforms, marine
Rail transportation, mining, industrial UPS ungrounded downstream systems