{"product_id":"bender-ir125y-2-ac-dc-9-6-100v-1-20kohm-insulation-monitor-for-ac-dc-it-systems","title":"Bender isoPV425-D4-4 AC 690V DC 1000V 1-500kOhm Insulation Monitor for AC DC PV IT Systems","description":"\u003cdiv\u003e\u003cspan\u003eisoPV425-D4-4 is an insulation monitoring device designed for unearthed systems (IT systems), particularly for photovoltaic applications. It continuously monitors the insulation resistance of unearthed main circuits with a rated voltage range of 3(N)AC, AC 0…690 V or DC 0…1000 V. The device is powered by an independent external supply voltage, allowing de‑energised systems to be monitored as well.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eThis device must be used together with the Bender AGH420 coupling device.\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): 3(N)AC, AC 0…690 V; DC 0…1000 V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Supply voltage (Uₛ): AC 100…240 V (47…63 Hz); DC 24…240 V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Response values (Rₐₙ₁ \/ Rₐₙ₂): Two separately adjustable ranges, 1…500 kΩ (pre‑warning \/ main alarm)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Response time (tₐₙ): ≤ 10 s (at R_F = 0.5 × Rₐₙ, Cₑ = 1 μF, according to IEC 61557‑8)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Max. permissible system leakage capacitance (Cₑ): ≤ 1000 μF (self‑adapting)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Measuring voltage (Uₘ): ±45 V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Max. measuring current (Iₘ): ≤ 400 μA\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Power consumption: ≤ 9 VA\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Alarm outputs: Two independent changeover contacts (K1, K2), AC 250 V \/ 5 A\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Display: Multi‑function LCD display\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Communication interface: RS‑485, supporting BMS, Modbus RTU and isoData protocols\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· Mounting: 35 mm DIN rail\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Operating temperature: –40 °C … +70 °C\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Standards compliance: IEC 61557‑8, DIN EN 61557‑8\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Order numbers: B71036303 (push‑wire terminals); B91036303 (screw‑type terminals)\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: Reliably monitors unearthed AC, DC and mixed AC\/DC IT systems, including those with galvanically connected inverters or frequency converters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· System voltage measurement: True RMS voltage measurement with undervoltage and overvoltage detection\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· DC residual voltage measurement: Measures L1\/+ and L2\/‑ to earth voltages\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Self‑adapting to system leakage capacitance: Automatically adapts up to 1000 μF\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Dual alarm relays: Configurable as pre‑warning (AL1) and main alarm (AL2); N\/O or N\/C selectable\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Adjustable time delays: Start‑up delay (0…10 s), response delay (0…99 s), release delay (0…99 s)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Fault memory: Selectable latching mode\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· LCD display: High‑contrast multi‑function display showing insulation resistance, system voltage and leakage capacitance\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· RS‑485 communication: Galvanically isolated, supports BMS, Modbus RTU and isoData protocols\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Password protection: Prevents unauthorised parameter changes\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Self‑test and connection monitoring: Automatic device self‑test with continuous monitoring of system and earth connections\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· Photovoltaic (PV) systems: Directly connected to inverters\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· AC, DC or mixed AC\/DC unearthed main circuits\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Systems with high system leakage capacitance: Large‑scale PV plants, long cable runs\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e· Installations with switch‑mode power supplies\u003c\/span\u003e\u003c\/div\u003e","brand":"Bender","offers":[{"title":"Default Title","offer_id":44220058730584,"sku":null,"price":1423.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/2799\/9320\/files\/ISOPV425-D4-4......jpg?v=1781152385","url":"https:\/\/gexufein.com\/products\/bender-ir125y-2-ac-dc-9-6-100v-1-20kohm-insulation-monitor-for-ac-dc-it-systems","provider":"Gexufein Automation","version":"1.0","type":"link"}