{"id":2967,"date":"2026-04-07T12:44:12","date_gmt":"2026-04-07T12:44:12","guid":{"rendered":"https:\/\/cnkuangya.com\/?p=2967"},"modified":"2026-04-07T12:44:14","modified_gmt":"2026-04-07T12:44:14","slug":"solar-pv-combiner-box-configuration-diagram","status":"publish","type":"post","link":"https:\/\/cnkuangya.com\/it\/blog\/solar-pv-combiner-box-configuration-diagram\/","title":{"rendered":"Solar PV Combiner Box Configuration Diagram"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Photovoltaic Protection Box &#8211; Technical Configuration<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">System Overview<\/h3>\n\n\n\n<p><strong>Product by: Kuangya Electrical Equipment Supply (<a href=\"http:\/\/cnkuangya.com\/it\/\">cnkuangya.com<\/a>)<\/strong><\/p>\n\n\n\n<p>The PV Combiner Box is a critical component in solar installations, providing centralized DC protection, monitoring, and connection management for multiple PV strings before feeding into the inverter.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"687\" height=\"1024\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-687x1024.png\" alt=\"\" class=\"wp-image-2968\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-687x1024.png 687w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-201x300.png 201w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-768x1145.png 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-1030x1536.png 1030w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-1374x2048.png 1374w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-8x12.png 8w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-300x447.png 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-600x894.png 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/04\/image-scaled.png 1717w\" sizes=\"auto, (max-width: 687px) 100vw, 687px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Configuration Diagram<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502                    PV COMBINER BOX (IP65 Enclosure)                 \u2502\n\u2502                        Model: KYDB Series                            \u2502\n\u2502                     www.cnkuangya.com                               \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502                                                                       \u2502\n\u2502  \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500  INPUT SECTION (DC+\/DC-)  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502  String 1:  &#91;+]\u2500\u2524Fuse gPV 14\u00d785\u251c\u2500\u2524SPD\u251c\u2500\u2510                     \u2502  \u2502\n\u2502  \u2502                                            \u2502                     \u2502  \u2502\n\u2502  \u2502  String 2:  &#91;+]\u2500\u2524Fuse gPV 14\u00d785\u251c\u2500\u2524SPD\u251c\u2500\u2524                     \u2502  \u2502\n\u2502  \u2502                                            \u2502                     \u2502  \u2502\n\u2502  \u2502  String 3:  &#91;+]\u2500\u2524Fuse gPV 14\u00d785\u251c\u2500\u2524SPD\u251c\u2500\u2524  DC Bus (+)         \u2502  \u2502\n\u2502  \u2502                                            \u2502                     \u2502  \u2502\n\u2502  \u2502  String 4:  &#91;+]\u2500\u2524Fuse gPV 14\u00d785\u251c\u2500\u2524SPD\u251c\u2500\u2524                     \u2502  \u2502\n\u2502  \u2502                                            \u2502                     \u2502  \u2502\n\u2502  \u2502  String 5:  &#91;+]\u2500\u2524Fuse gPV 14\u00d785\u251c\u2500\u2524SPD\u251c\u2500\u2524                     \u2502  \u2502\n\u2502  \u2502                                            \u2502                     \u2502  \u2502\n\u2502  \u2502  String 6:  &#91;+]\u2500\u2524Fuse gPV 14\u00d785\u251c\u2500\u2524SPD\u251c\u2500\u2518                     \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502  \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500 \u2500   \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502  String 1:  &#91;-]\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510                         \u2502  \u2502\n\u2502  \u2502  String 2:  &#91;-]\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524                         \u2502  \u2502\n\u2502  \u2502  String 3:  &#91;-]\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524  DC Bus (-)             \u2502  \u2502\n\u2502  \u2502  String 4:  &#91;-]\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524                         \u2502  \u2502\n\u2502  \u2502  String 5:  &#91;-]\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524                         \u2502  \u2502\n\u2502  \u2502  String 6:  &#91;-]\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518                         \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518  \u2502\n\u2502                                                                       \u2502\n\u2502  \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500  PROTECTION SECTION  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502   DC Bus (+) \u2500\u2500\u2524DC Circuit Breaker KYDB-63\u251c\u2500\u2510                \u2502  \u2502\n\u2502  \u2502                     (1500V, 63A)              \u2502                \u2502  \u2502\n\u2502  \u2502                                                \u2502                \u2502  \u2502\n\u2502  \u2502   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518                \u2502  \u2502\n\u2502  \u2502   \u2502                                                             \u2502  \u2502\n\u2502  \u2502   \u2502    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510                    \u2502  \u2502\n\u2502  \u2502   \u251c\u2500\u2500\u2500\u2500\u2524  DC Surge Protector (SPD)       \u2502                    \u2502  \u2502\n\u2502  \u2502   \u2502    \u2502  Type 1+2, 1500V DC              \u2502                    \u2502  \u2502\n\u2502  \u2502   \u2502    \u2502  Imax: 40kA, In: 20kA            \u2502                    \u2502  \u2502\n\u2502  \u2502   \u2502    \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518                    \u2502  \u2502\n\u2502  \u2502   \u2502                      \u2502                                      \u2502  \u2502\n\u2502  \u2502   \u2502                      \u251c\u2500\u2500\u2500\u2500 PE (Ground)                     \u2502  \u2502\n\u2502  \u2502   \u2502                                                             \u2502  \u2502\n\u2502  \u2502   \u2502    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510                    \u2502  \u2502\n\u2502  \u2502   \u2514\u2500\u2500\u2500\u2500\u2524  DC Switch Disconnector          \u2502                    \u2502  \u2502\n\u2502  \u2502        \u2502  Load Break Switch               \u2502                    \u2502  \u2502\n\u2502  \u2502        \u2502  Manual Operation                \u2502                    \u2502  \u2502\n\u2502  \u2502        \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518                    \u2502  \u2502\n\u2502  \u2502                      \u2502                                          \u2502  \u2502\n\u2502  \u2502   DC Bus (-) \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510    \u2502  \u2502\n\u2502  \u2502                                                            \u2502    \u2502  \u2502\n\u2502  \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518  \u2502\n\u2502                                                                       \u2502\n\u2502  \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500  OUTPUT SECTION  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502   DC Output (+) \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192  To Inverter (+)        \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502   DC Output (-) \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192  To Inverter (-)        \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502   PE (Ground)   \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192  Equipment Ground       \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518  \u2502\n\u2502                                                                       \u2502\n\u2502  \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500  MONITORING SECTION  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2502   \u2022 Voltage Monitoring (DC+ to DC-)                            \u2502  \u2502\n\u2502  \u2502   \u2022 Current Monitoring (per string)                            \u2502  \u2502\n\u2502  \u2502   \u2022 Temperature Sensors                                        \u2502  \u2502\n\u2502  \u2502   \u2022 SPD Status Indicator (Red Light = Fault)                  \u2502  \u2502\n\u2502  \u2502   \u2022 Communication Port (RS485\/Modbus)                          \u2502  \u2502\n\u2502  \u2502                                                                 \u2502  \u2502\n\u2502  \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518  \u2502\n\u2502                                                                       \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Component Specifications<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>PV String Fuses (gPV Type)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Modello<\/strong>: gPV 14\u00d785 mm<\/li>\n\n\n\n<li><strong>Valutazione<\/strong>: 10A &#8211; 30A (depending on string current)<\/li>\n\n\n\n<li><strong>Tensione<\/strong>: 1000V \/ 1500V DC<\/li>\n\n\n\n<li><strong>Capacit\u00e0 di rottura<\/strong>: High interrupting rating for DC applications<\/li>\n\n\n\n<li><strong>Funzione<\/strong>: Overcurrent protection for individual PV strings<\/li>\n\n\n\n<li><strong>Caratteristiche<\/strong>: UV-resistant, replaceable modules<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>DC Surge Protection Device (SPD)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tipo<\/strong>: Type 1+2 Combined<\/li>\n\n\n\n<li><strong>Tensione nominale<\/strong>: 1500V DC<\/li>\n\n\n\n<li><strong>Corrente di scarica massima (Imax)<\/strong>: 40kA (8\/20\u03bcs)<\/li>\n\n\n\n<li><strong>Corrente di scarica nominale (In)<\/strong>: 20kA<\/li>\n\n\n\n<li><strong>Protection Level (Up)<\/strong>: &lt; 4kV<\/li>\n\n\n\n<li><strong>Indicazione di stato<\/strong>: Visual indicator window (Red = Failure)<\/li>\n\n\n\n<li><strong>Funzione<\/strong>: Lightning and surge protection<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>Interruttore CC<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Modello<\/strong>: KYDB-63 Series<\/li>\n\n\n\n<li><strong>Corrente nominale<\/strong>: 16A &#8211; 63A<\/li>\n\n\n\n<li><strong>Tensione nominale<\/strong>: 1000V \/ 1500V DC<\/li>\n\n\n\n<li><strong>Pali<\/strong>: 2P (Positive and Negative)<\/li>\n\n\n\n<li><strong>Capacit\u00e0 di rottura<\/strong>: 10kA &#8211; 20kA DC<\/li>\n\n\n\n<li><strong>Funzione<\/strong>: Overload and short-circuit protection, manual isolation<\/li>\n\n\n\n<li><strong>Caratteristiche<\/strong>: Arc extinction technology for DC applications<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>Sezionatore DC<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tipo<\/strong>: Load Break Switch<\/li>\n\n\n\n<li><strong>Valutazione<\/strong>: Up to 63A, 1500V DC<\/li>\n\n\n\n<li><strong>Operazione<\/strong>: Manual rotary handle<\/li>\n\n\n\n<li><strong>Funzione<\/strong>: Safe isolation for maintenance<\/li>\n\n\n\n<li><strong>Caratteristiche<\/strong>: Lockable in OFF position, visible contact gap<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>Involucro<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Materiale<\/strong>: Powder-coated steel or UV-resistant plastic<\/li>\n\n\n\n<li><strong>Protection Rating<\/strong>: IP65 (dust-tight, water jet protected)<\/li>\n\n\n\n<li><strong>Montaggio<\/strong>: Wall-mount or pole-mount options<\/li>\n\n\n\n<li><strong>Cable Entry<\/strong>: Bottom entry with cable glands<\/li>\n\n\n\n<li><strong>Dimensioni<\/strong>: Customizable based on string quantity<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Technical Parameters<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Parametro<\/th><th>Specifiche<\/th><\/tr><\/thead><tbody><tr><td><strong>Max Input Strings<\/strong><\/td><td>6 &#8211; 16 (customizable)<\/td><\/tr><tr><td><strong>Tensione del sistema<\/strong><\/td><td>1000V \/ 1500V DC<\/td><\/tr><tr><td><strong>Max Input Current per String<\/strong><\/td><td>15A &#8211; 20A<\/td><\/tr><tr><td><strong>Total Output Current<\/strong><\/td><td>Up to 400A<\/td><\/tr><tr><td><strong>Temperatura di esercizio<\/strong><\/td><td>Da -40\u00b0C a +70\u00b0C<\/td><\/tr><tr><td><strong>Altitude<\/strong><\/td><td>\u2264 2000m (standard), higher available<\/td><\/tr><tr><td><strong>Standard di conformit\u00e0<\/strong><\/td><td>IEC 60947, IEC 61643-31, CE, RoHS<\/td><\/tr><tr><td><strong>Garanzia<\/strong><\/td><td>5 anni standard<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Caratteristiche di protezione<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u2713 <strong>Protezione a livello di stringa<\/strong><\/h3>\n\n\n\n<p>Each PV string is individually protected with gPV fuses and SPDs, preventing fault propagation between strings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2713 <strong>Protezione dalle sovratensioni<\/strong><\/h3>\n\n\n\n<p>Type 1+2 SPD provides comprehensive protection against direct and indirect lightning strikes, as well as switching surges.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2713 <strong>Protezione da sovracorrente<\/strong><\/h3>\n\n\n\n<p>DC circuit breakers protect the main bus and downstream equipment from overload and short-circuit conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2713 <strong>Isolation Capability<\/strong><\/h3>\n\n\n\n<p>Switch disconnector allows safe maintenance with visible contact separation and lockout capability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2713 <strong>Reverse Polarity Protection<\/strong><\/h3>\n\n\n\n<p>Blocking diodes or fuse coordination prevents reverse current flow during shading or module mismatch.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Installation Guidelines<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Selezione della posizione<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Install close to PV array to minimize DC cable runs<\/li>\n\n\n\n<li>Ensure adequate ventilation and shade from direct sunlight<\/li>\n\n\n\n<li>Accessible for maintenance and inspection<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Wiring Requirements<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use UV-resistant DC cables (PV1-F or equivalent)<\/li>\n\n\n\n<li>Proper cable sizing based on string current and voltage drop<\/li>\n\n\n\n<li>Secure cable glands to maintain IP65 rating<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Messa a terra<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Connect enclosure to equipotential grounding system<\/li>\n\n\n\n<li>Ensure SPD ground lead is as short as possible (&lt; 0.5m)<\/li>\n\n\n\n<li>Use copper grounding conductors (min. 16mm\u00b2)<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Etichettatura<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Clear identification of each string input<\/li>\n\n\n\n<li>Warning labels for DC voltage hazards<\/li>\n\n\n\n<li>Operation instructions on enclosure door<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programma di manutenzione<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Interval<\/th><th>Attivit\u00e0 di manutenzione<\/th><\/tr><\/thead><tbody><tr><td><strong>Mensile<\/strong><\/td><td>Visual inspection of SPD status indicators<\/td><\/tr><tr><td><strong>Quarterly<\/strong><\/td><td>Check for loose connections, clean enclosure<\/td><\/tr><tr><td><strong>Annualmente<\/strong><\/td><td>Thermal imaging scan, torque verification<\/td><\/tr><tr><td><strong>As Needed<\/strong><\/td><td>Replace failed SPDs, blown fuses<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Quality Assurance<\/h2>\n\n\n\n<p><strong>Kuangya Electrical Commitment:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2713 Factory acceptance testing (FAT) before shipment<\/li>\n\n\n\n<li>\u2713 IEC, CE, RoHS compliance certification<\/li>\n\n\n\n<li>\u2713 Rigorous thermal cycling and voltage stress tests<\/li>\n\n\n\n<li>\u2713 Comprehensive technical documentation<\/li>\n\n\n\n<li>\u2713 Global technical support and spare parts availability<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>For detailed specifications, customization, or quotation:<\/strong><\/p>\n\n\n\n<p><strong>Fornitura di apparecchiature elettriche Kuangya<\/strong>\\<br>Website: <a href=\"https:\/\/cnkuangya.com\/it\/\">cnkuangya.com<\/a>\\<br>Product Line: DC Photovoltaic Protection Systems\\<br>Experience: 25+ years | 2000+ projects delivered worldwide<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><em>This configuration represents a standard 6-string PV combiner box. Configurations can be customized for 8, 12, 16, or more strings based on project requirements.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Photovoltaic Protection Box &#8211; Technical Configuration System Overview Product by: Kuangya Electrical Equipment Supply (cnkuangya.com) The PV Combiner Box is a critical component in solar installations, providing centralized DC protection, monitoring, and connection management for multiple PV strings before feeding into the inverter. Configuration Diagram Component Specifications 1. PV String Fuses (gPV Type) 2. DC [&hellip;]<\/p>","protected":false},"author":4,"featured_media":2352,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-2967","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/posts\/2967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/comments?post=2967"}],"version-history":[{"count":1,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/posts\/2967\/revisions"}],"predecessor-version":[{"id":2969,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/posts\/2967\/revisions\/2969"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/media\/2352"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/media?parent=2967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/categories?post=2967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnkuangya.com\/it\/wp-json\/wp\/v2\/tags?post=2967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}