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{ "@context" : "http://schema.org/", "@type" : "Product", "name" : "Ground resistance signaling module; Ground fault alarm via digital output; Supply voltage: 24 VDC; Module width: 18 mm", "description" : "<b>Short description:</b><br/>WAGO's module signals a value falling below a non-adjustable, asymmetric isolation resistance between +24 V or 0 V of the supply voltage and ground with a potential-free (Iso OK) contact and status LED. The Iso OK contact can be evaluated via a PLC.<br/>This status is maintained until the next measurement interval.<br/><b>Operation with Grounded Control Circuit (Functional Potential Equalization):</b><br/><ul><li>The module establishes an internal connection between the 0 V (X2.2) and ground (X2.1) connections via a semiconductor switch.</li><li>At 10 s intervals, this connection between 0 V and ground is interrupted for 0.5 s, and the isolation resistance between +24 V (X1.3) or 0 V (X2.2) of the supply voltage and earth (X2.1) is determined.</li><li>The grounding connection on the module does not meet the requirements of a protective earth terminal (PE). It serves as a functional ground. The measurement method does not involve the module establishing any permanent connection between 0 V and ground.</li></ul><br/><b>Operation with Ungrounded Control Circuit</b><br/><ul><li>In this operating mode, the semiconductor switch to establish a connection between 0 V (X2.2) and ground (X2.1) is deactivated. At 1 s intervals, the isolation resistance offset is determined for 0.5 s.</li><li>The module does not meet the requirements of an isolation monitoring device per EN 61557-8.</li></ul><br/><b>“Iso OK” Contact:</b><br/><ul><li>The potential-free contact serves the purpose of supporting evaluation (e.g., via a PLC) of looming isolation faults.</li><li>This contact must not be used to switch safety-related products that could cause the circuit to switch off.</li></ul>", "mpn" : "789-665", "sku" : "789-665", "brand" : { "@type":"Brand", "name":"WAGO" }, "manufacturer" : { "@type":"Organization", "name":"WAGO Kontakttechnik GmbH & Co. KG" }, "image" : "https://www.wago.com/medias/200-2480588-DE.jpg?context=bWFzdGVyfGltYWdlc3w0ODg4fGltYWdlL2pwZWd8YURneEwyZzRPUzh4TkRZNE1qYzJPREkwTkRjMk5pOHlNREJmTWpRNE1EVTRPRjlFUlM1cWNHY3wzZjJiYjEwNzcyZjZmMmYyMzVkZDc5Y2IyNDIzMTNjMTllODAxYzg4YzU5MWE2OTJiMTFhMDU1ZTgyNWRmNDg5", "gtin13" : "4066966120820", "category" : "Protective Devices and Protective Electronics", "url" : "https://www.wago.com/tr-en/protective-devices-and-protective-electronics/ground-resistance-signaling-module/p/789-665" }
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Item no. 789-665

Ground resistance signaling module; Ground fault alarm via digital output; Supply voltage: 24 VDC; Module width: 18 mm

Item no. 789-665
Ground resistance signaling module
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Item no. 789-665
Ground resistance signaling module
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