{"product_id":"bender-rcms490-d-2-ac-70-276v-dc-70-276v-42-460hz-10ma-10a-residual-current-monitor-for-tn-tt-systems","title":"Bender EDS490-L-2 AC 70-276V DC 70-276V 42-460Hz 2-10mA Insulation Fault Locator for IT Systems","description":"\u003cdiv\u003e\u003cspan\u003eThe EDS490-L-2 is an insulation fault locator designed for unearthed systems (IT systems) to automatically locate insulation faults. It works together with an ISOMETER® insulation monitoring device (e.g., iso685-D-P): when the ISOMETER® detects an insulation fault and generates a locating current signal, the EDS490-L-2 detects this signal via measuring current transformers installed on each branch circuit, thereby precisely identifying the faulty circuit without interrupting the power supply.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eThis model is the L version, which has no built‑in display and uses LED indicators for status display. It features 12 measuring channels with independent alarm contacts per channel. The -2 suffix indicates a AC\/DC 70…276 V wide‑range power supply.\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· Order No.: B 9108 0012\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Supply voltage (Uₛ): AC\/DC 70…276 V, AC 42…460 Hz\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Measuring channels: 12 channels\/device\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Response sensitivity: 2…10 mA (adjustable)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Scanning time: ≤ 10 s (all channels scanned in parallel, up to 1080 channels)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Display: 7‑segment LED display\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Alarm outputs:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e  · 2 common alarm relays (each with 1 changeover contact)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e  · 12 independent channel alarm contacts (12 × 1 N\/O contact)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· History memory: 300 event records with date and time stamp\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Communication interface: RS‑485, supports BMS protocol\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· BMS address range: 1…90\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· CT connection monitoring: Continuously monitors external current transformer connection status\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Fault memory: Selectable latching\/non‑latching mode\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Operating principle: Relays configurable for N\/O or N\/C operation\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Mounting: DIN rail mounting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Protection class: Internal components IP30, terminals IP20\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· 12 independent measuring channels: Connects 12 measuring current transformers per device, each channel with its own alarm contact for precise fault location\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Parallel scanning technology: All channels scanned simultaneously, complete detection in as little as 10 seconds\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Adjustable sensitivity: Response value adjustable from 2…10 mA to adapt to system leakage capacitance\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· High scalability: Up to 90 EDS devices can be connected via the BMS bus, expanding to 1080 measuring channels\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· History memory: Built‑in storage for 300 time‑stamped event records\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Continuous CT connection monitoring: Continuously monitors external current transformer connections; alarms immediately on wire break\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Fault memory: Selectable latching mode keeps alarm status until manual reset\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· LED status display: 7‑segment LED display clearly indicates device operating status and fault information\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: Insulation fault location in unearthed systems with frequency converters, rectifiers and other power electronic loads\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Medical locations: Insulation fault location in IT systems (isolated power systems) for operating theatres, ICUs, etc.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Data centres: Ensuring reliable power supply for server racks and UPS systems, quickly locating earth faults\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Marine and offshore: Insulation fault location on shipboard power systems and offshore platform distribution systems\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Power plants: Insulation fault location in auxiliary systems and DC control systems\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Photovoltaic systems: Insulation fault location on the DC side of large‑scale PV plants\u003c\/span\u003e\u003c\/div\u003e","brand":"Bender","offers":[{"title":"Default Title","offer_id":44225098088536,"sku":null,"price":343.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/2799\/9320\/files\/EDS490-L-2.....jpg?v=1781247805","url":"https:\/\/gexufein.com\/products\/bender-rcms490-d-2-ac-70-276v-dc-70-276v-42-460hz-10ma-10a-residual-current-monitor-for-tn-tt-systems","provider":"Gexufein Automation","version":"1.0","type":"link"}