{"id":10357,"date":"2026-07-28T16:32:49","date_gmt":"2026-07-28T14:32:49","guid":{"rendered":"https:\/\/q3-energie.de\/pv-firefighter-safety-switch-for-large-pv-systems-qfire-for-954-pv-strings\/"},"modified":"2026-08-10T13:29:34","modified_gmt":"2026-08-10T11:29:34","slug":"firefighter-safety-switch-for-large-pv-systems-954-pv-strings","status":"publish","type":"post","link":"https:\/\/q3-energie.de\/en\/firefighter-safety-switch-for-large-pv-systems-954-pv-strings\/","title":{"rendered":"Firefighter Safety Switch for Large PV Systems | 954 PV Strings"},"content":{"rendered":"\n
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QFire Firefighter Safety Switch for 954 PV Strings<\/h2>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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Planning PV Firefighter Safety Switches for Large PV Systems<\/strong><\/h2>\n\n\n\n
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Large rooftop PV systems place particular demands on DC-side shutdown technology. PV firefighter safety switches for large PV systems must reliably integrate numerous strings, widely distributed generator fields and long cable routes into a coordinated shutdown concept. <\/p>\n\n\n\n

For this large-scale PV installation, seven QFire Control Boxes and a total of 84 QFire BIG Switch Boxes were installed. In total, the system enables two-pole disconnection of 954 PV strings from the inverter side. The Switch Boxes are distributed across the roof close to the individual generator fields. <\/p>\n\n\n\n

For reliable long-term operation, the QFire Switch Boxes were additionally fitted with purpose-built protective canopies. These reduce direct exposure to sunlight and precipitation and demonstrate how sound planning, professional installation and responsible system operation work together. <\/p>\n\n\n\n

Expertly implemented by HVT Elektro GmbH! <\/a>\u26a1\u2600\ufe0f<\/p>\n\n\n

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Planning<\/h4>\n\n\n\n

Large PV System<\/h4>\n\n\n\n

Firefighter Switch<\/h4>\n<\/div>\n\n\n\n
Project data<\/strong><\/th><\/th><\/tr><\/thead>
Application<\/td>Large commercial rooftop PV system<\/td><\/tr>
Location<\/td>Berlin-Lichtenberg, Berlin<\/td><\/tr>
Technology<\/td>QFire BIG PV Firefighter Safety Switch for Large PV Systems<\/a><\/td><\/tr>
Control Boxes<\/td>7<\/td><\/tr>
Switch Boxes<\/td>84<\/td><\/tr>
PV Strings<\/td>954<\/td><\/tr>
Electrical Contractor<\/td>HVT Elektro GmbH<\/td><\/tr>
Planning<\/td>T\u00dcV S\u00dcD Advimo GmbH<\/td><\/tr>
Special Feature<\/td>Purpose-built sun and weather protection for reliable long-term operation<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n
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\"PV\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n
\"QFire\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n
\"QFire\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n
\"Weather-protected\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n\n
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