{"product_id":"bender-ir145y-3-138v-1-20kohm-insulation-monitor-for-ac-dc-it-systems","title":"Bender IR145Y-4 300V 10-200kOhm Insulation Monitor for AC DC IT Systems","description":"\u003cdiv\u003e\u003cspan\u003eThe IR145Y‑4 is an insulation monitoring device designed for unearthed systems (IT systems). It continuously monitors the insulation resistance of AC\/DC main circuits up to 300 V. When the insulation value falls below a preset threshold, the device triggers an alarm, allowing the first earth fault to be detected before a second fault causes a power outage or equipment damage. The device complies with IEC 61557‑8 and is suitable for both AC and DC unearthed systems.\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): AC\/DC 0…300 V, 15…400 Hz\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Response value (Rₐₙ): 10…200 kΩ (adjustable)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Response time (tₐₙ): ≤ 5 s (at R_F = 0.5 × Rₐₙ, Cₑ = 1 μF)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Max. permissible system leakage capacitance (Cₑ): ≤ 20 μF\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Measuring voltage (Uₘ): ≤ 15 V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Max. measuring current (Iₘ): ≤ 0.11 mA\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Internal DC resistance (Rᵢ): ≥ 120 kΩ \/ 115 kΩ\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Supply voltage (Uₛ): AC 230 V, 50…400 Hz\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Power consumption: 3.0 VA\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Alarm output: Two independent changeover contacts, AC 250 V \/ 5 A\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Data sheet: 103001\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Order number: B 9103 6502\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· Insulation monitoring: Continuously monitors the insulation resistance of the IT system to earth; adjustable response value from 10 kΩ to 200 kΩ.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Two independent alarm stages: Two separate alarm relays for pre‑warning and main alarm, enabling staged alarming.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· LED status indication: Front‑panel LEDs (Power On, AC, DC+, DC‑) clearly indicate device status and the faulty side (AC or DC).\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Connection monitoring: LED flashes when the measuring leads (L1\/L2) or earth connection (KE\/E) is interrupted.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Fault memory: Selectable latching function via DIP switch; alarm status remains until manually reset.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Self‑test and reset: Combined TEST\/RESET button on front panel (short press \u0026lt; 1 s = reset, long press \u0026gt; 2 s = test); supports external test\/reset push‑buttons.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Relay configuration: Alarm relay operating principle (N\/O or N\/C) selectable via DIP switch.\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 (AC\/DC unearthed systems)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Online insulation monitoring of mobile generators\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Unearthed control circuits in control cabinets and machinery\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Lighting systems, building electrical installations\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· DC distribution systems\u003c\/span\u003e\u003c\/div\u003e","brand":"Bender","offers":[{"title":"Default Title","offer_id":44201962274904,"sku":null,"price":515.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/2799\/9320\/files\/IR145R-4.....jpg?v=1780710226","url":"https:\/\/gexufein.com\/products\/bender-ir145y-3-138v-1-20kohm-insulation-monitor-for-ac-dc-it-systems","provider":"Gexufein Automation","version":"1.0","type":"link"}