{"product_id":"bender-irdh275b-59327-793v-650v-insulation-monitor-for-ac-dc-it-systems","title":"Bender IRDH275B-49335 793V 650V Insulation Monitor for AC DC IT Systems","description":"\u003cdiv\u003e\u003cspan\u003eThe IRDH275B-49335 is a high-performance insulation monitoring device from Bender, designed for unearthed AC, 3AC, AC\/DC, and DC power systems (IT systems). It continuously monitors the insulation resistance of the main circuit and is suitable for modern power supply systems that contain rectifiers, frequency converters, thyristor-controlled DC drives, and directly connected DC components. The device complies with IEC 61557‑8.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Rated system voltage (Uₙ): 3AC\/AC 0…793 V; DC 0…650 V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Response value (Rₐₙ): 1 kΩ … 10 MΩ (two independently adjustable thresholds)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Supply voltage (Uₛ): AC 88…264 V; DC 77…286 V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Power consumption: 8.0 VA\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Relay contact rating: AC 250 V, 5 A\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· AMPPlus Measuring Principle – Uses Bender‘s patented AMPPlus measuring technology, delivering accurate insulation monitoring even in systems with extensive DC components and high leakage capacitances.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Automatic Adaptation to System Leakage Capacitance – Automatically adapts to the existing system leakage capacitance (maximum permissible ≤ 500 μF), optimising measurement time without manual adjustments.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Two Independently Adjustable Response Values – Features two separately adjustable alarm relays, each configurable from 1 kΩ to 10 MΩ.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Two-Line LC Display – Equipped with a clear two-line LC display with backlight, showing real-time insulation resistance values.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Alarm Indicators – Front panel includes three LED indicators: AL1 LED (pre-warning), AL2 LED (critical alarm), and System Fault LED.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Built‑In Self‑Test and Connection Monitoring – Automatic self-test continuously verifies internal measuring circuits and system components. The TEST button can manually trigger a test.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· External Test and Reset Functions – Supports connection of external test and reset push-buttons.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Standby Contact – Includes a standby contact. When the contact is closed, insulation measurements stop.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· De‑Energised System Monitoring – Powered by an independent external supply, the device can monitor the system even when the main circuit is de‑energised.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Voltage Extension via Coupling Devices – Using Bender AGH series coupling devices, the nominal system voltage range can be extended to higher levels.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· History Memory with Real-Time Clock – Stores all alarm messages with precise date and time stamps.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· RS‑485 Communication Interface (BMS Protocol) – Electrically isolated RS‑485 interface for data exchange with other Bender devices.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· ISOMETER® Disconnecting Relay – Allows the device to be temporarily disconnected from the monitored IT system via an external control signal.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Isolated 0(4)…20 mA Analog Current Output – Provides a signal proportional to the measured insulation value for connection to PLCs or SCADA systems.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eStandards Compliance\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· IEC 61557‑8, DIN EN 61557‑8\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eTypical Applications\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Industrial IT systems\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Medical locations (operating theatres, ICUs)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Marine and offshore applications\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· UPS and battery systems\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Photovoltaic and renewable energy systems\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Coupled IT systems\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Extended voltage applications (with AGH coupling devices)\u003c\/span\u003e\u003c\/div\u003e","brand":"Bender","offers":[{"title":"Default Title","offer_id":44111491399768,"sku":null,"price":1715.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/2799\/9320\/files\/IRDH275-435....._01143bc6-7bc0-4f54-9061-ea3415d2e196.jpg?v=1778881027","url":"https:\/\/gexufein.com\/products\/bender-irdh275b-59327-793v-650v-insulation-monitor-for-ac-dc-it-systems","provider":"Gexufein Automation","version":"1.0","type":"link"}