{"id":30276,"date":"2026-06-21T22:25:29","date_gmt":"2026-06-21T20:25:29","guid":{"rendered":"https:\/\/deyenergie.com\/product\/sun-20k-sg05lp3\/"},"modified":"2026-08-02T08:27:53","modified_gmt":"2026-08-02T06:27:53","slug":"sun-20k-sg05lp3","status":"publish","type":"product","link":"https:\/\/deyenergie.com\/en\/product\/sun-20k-sg05lp3\/","title":{"rendered":"SUN-20K-SG05LP3"},"content":{"rendered":"

Download datasheet (PDF)<\/a><\/p>\n

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Deye <\/span>SUN-20K-SG05LP3 \u2013 20 kW <\/span>three-phase <\/span>low-voltage (48 V) hybrid <\/span>inverter for larger residential <\/span>and small <\/span>commercial systems<\/span><\/h2>\n<\/div>\n
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The <\/span>Deye SUN-20K-SG05LP3<\/span><\/strong> (SUN-20K-SG05LP3-EU-SM2) is a 20 kW <\/span>rated <\/span>power, three-phase, <\/span>low-voltage (48 V)<\/span><\/strong> hybrid inverter<\/span><\/strong>, the <\/span>highest-power <\/span>member <\/span>of the SG05LP3-EU-SM2 (14\u201320 kW) series. Thanks to its robust, <\/span> transformer-isolated <\/span>design, it is <\/span>compatible with the most common 48 V <\/span>batteries (lithium-ion or <\/span>lead-acid), <\/span>while the 2 independent MPPTs <\/span>optimize generation even on <\/span>roofs with different orientations. <\/span>It combines <\/span>on-grid and <\/span>off-grid operation in a single unit, making it <\/span>ideal for larger family homes, <\/span>farms, and small businesses <\/span>energy supply.<\/span><\/p>\n<\/div>\n

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Why choose the Deye <\/span>SUN-20K-SG05LP3 inverter?<\/span><\/h3>\n<\/div>\n
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The <\/span>Deye SUN-20K-SG05LP3 inverter<\/span><\/strong> operates with up to <\/span>97.6% maximum and >99% <\/span> MPPT efficiency, with low, <\/span><3% harmonic distortion (THD). <\/span> During the day, solar energy first <\/span>supplies the loads, with the surplus <\/span>charging the battery and <\/span>feeding into the grid; in case of power outage, <\/span>the inverter automatically switches to battery <\/span>operation. The 100% unbalanced <\/span> output adapts to <\/span>different loads per phase, and in off-grid mode <\/span>the inverter can deliver <\/span>twice the rated power for 10 seconds, <\/span>enabling high-inrush <\/span>equipment to start. The series’ <\/span> highest, up to 350 A <\/span>charge\/discharge current ensures fast battery charging <\/span>and strong discharge performance.<\/span><\/p>\n<\/div>\n

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Key advantages of the Deye SUN-20K-SG05LP3<\/span><\/h3>\n<\/div>\n
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    \n
  • 48 V battery compatibility<\/span><\/strong> \u2013 <\/span>transformer-isolated <\/span>design, for lithium-ion and lead-acid <\/span>batteries, up to 350 A <\/span>charge\/discharge<\/span><\/li>\n
  • 2 MPPT controllers<\/span><\/strong> \u2013 wide, 160\u2013650 V MPPT range <\/span>for roofs with different orientations<\/span><\/li>\n
  • 100% unbalanced output<\/span><\/strong> \u2013 precise <\/span>adaptation to real, unbalanced <\/span>loads<\/span><\/li>\n
  • Strong starting power<\/span><\/strong> \u2013 <\/span>in off-grid mode, 2\u00d7 rated for 10 s<\/span><\/li>\n
  • High efficiency<\/span><\/strong> \u2013 up to 97.6% max. and <\/span>>99% MPPT efficiency, <3% THD<\/span><\/li>\n
  • Scalability<\/span><\/strong> \u2013 up to 10 units <\/span>can be paralleled in on-grid and off-grid <\/span>mode<\/span><\/li>\n
  • AC-coupled retrofit and generator support<\/span><\/strong> \u2013 existing solar systems <\/span>can be expanded with storage; diesel generator <\/span>energy can also be stored<\/span><\/li>\n
  • Outdoor design<\/span><\/strong> \u2013 IP65 protection, <\/span>touchscreen LCD, Wi-Fi + Bluetooth <\/span>included in the package<\/span><\/li>\n
  • Flexible monitoring<\/span><\/strong> \u2013 <\/span>RS485, RS232, CAN; GPRS \/ 4G \/ LAN <\/span>optional<\/span><\/li>\n<\/ul>\n<\/div>\n
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    Applications<\/span><\/h3>\n<\/div>\n
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    The <\/span>Deye SUN-20K-SG05LP3 inverter<\/span><\/strong> is ideal for larger, three-phase <\/span>energy-demand residential and small <\/span>commercial projects: large family <\/span>homes, farms, and small <\/span>businesses where flexible and <\/span>reliable energy management is <\/span>needed with 48 V battery <\/span>storage. It helps maximize self-<\/span> consumption, acts as a backup power source <\/span>during power outages, and with 6 <\/span>programmable charge\/discharge <\/span>periods enables off-peak <\/span>charging and peak-time <\/span>discharge. Thanks to AC-coupled expandability, <\/span> existing solar <\/span>systems can also be retrofitted <\/span>with storage.<\/span><\/p>\n<\/div>\n

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    Deye SUN-20K-SG05LP3 <\/span>technical specifications<\/span><\/h3>\n<\/div>\n
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    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Parameter<\/span><\/th>\nValue<\/span><\/th>\n<\/tr>\n<\/thead>\n
    Model<\/span><\/td>\nSUN-20K-SG05LP3-EU-SM2<\/span><\/td>\n<\/tr>\n
    Type<\/span><\/td>\nthree-phase, low-voltage (48 V) <\/span>hybrid inverter<\/span><\/td>\n<\/tr>\n
    Rated AC <\/span>power<\/span><\/td>\n20,000 W (20 kW)<\/span><\/td>\n<\/tr>\n
    Max. AC apparent power<\/span><\/td>\n22,<\/span>000 VA<\/span><\/td>\n<\/tr>\n
    Rated AC current (380\/400 V) <\/span><\/td>\n30.4 \/ 29.0 A<\/span><\/td>\n<\/tr>\n
    Max. AC current <\/span>(380\/400 V)<\/span><\/td>\n~33.4 \/ 31.9 A<\/span><\/td>\n<\/tr>\n
    Rated AC voltage<\/span><\/td>\n220\/380 V, <\/span>230\/400 V; 3L + N + PE<\/span><\/td>\n<\/tr>\n
    Grid <\/span>frequency<\/span><\/td>\n50 \/ 60 Hz<\/span><\/td>\n<\/tr>\n
    Max. <\/span>continuous AC pass-through <\/span>(grid\u2192load)<\/span><\/td>\n70 A<\/span><\/td>\n<\/tr>\n
    Peak power (off-grid, 10 s)<\/span><\/td>\n2\u00d7 rated<\/span><\/td>\n<\/tr>\n
    Power factor range<\/span><\/td>\n0.8 <\/span>capacitive \u2013 0.8 inductive<\/span><\/td>\n<\/tr>\n
    Max. <\/span>PV input power<\/span><\/td>\n27,000 W <\/span><\/td>\n<\/tr>\n
    Max. PV voltage<\/span><\/td>\n800 V<\/span><\/td>\n<\/tr>\n
    MPPT voltage range<\/span><\/td>\n160\u2013650 V<\/span><\/td>\n<\/tr>\n
    Rated PV voltage<\/span><\/td>\n550 V<\/span><\/td>\n<\/tr>\n
    Start-up voltage<\/span><\/td>\n160 V<\/span><\/td>\n<\/tr>\n
    Number of MPPTs <\/span>\/ strings<\/span><\/td>\n2 MPPT \/ 2+1 string <\/span><\/td>\n<\/tr>\n
    Max. operating PV current<\/span><\/td>\n36+20 A<\/span><\/td>\n<\/tr>\n
    Max. short-circuit current<\/span><\/td>\n54+30 A<\/span><\/td>\n<\/tr>\n
    Battery type<\/span><\/td>\nlead-acid or <\/span>lithium-ion (48 V)<\/span><\/td>\n<\/tr>\n
    Battery <\/span>voltage range<\/span><\/td>\n40\u201360 V<\/span><\/td>\n<\/tr>\n
    Number of battery inputs<\/span><\/td>\n2<\/span><\/td>\n<\/tr>\n
    Max. <\/span>charge\/discharge current<\/span><\/td>\n350 A<\/span><\/td>\n<\/tr>\n
    Charging <\/span>strategy<\/span><\/td>\nself-adaptive to BMS<\/span><\/td>\n<\/tr>\n
    Max. efficiency<\/span><\/td>\n97.6%<\/span><\/td>\n<\/tr>\n
    Euro efficiency <\/span><\/td>\n97.0%<\/span><\/td>\n<\/tr>\n
    MPPT efficiency<\/span><\/td>\n>99%<\/span><\/td>\n<\/tr>\n
    THD<\/span><\/td>\n<3%<\/span><\/td>\n<\/tr>\n
    Parallel capability<\/span><\/td>\nup to 10 units (on-grid and off-grid)<\/span><\/td>\n<\/tr>\n
    Operating temperature<\/span><\/td>\n\u221240 \u2013 +60 \u00b0C (derating above >45 <\/span>\u00b0C)<\/span><\/td>\n<\/tr>\n
    Altitude<\/span><\/td>\n3000 m<\/span><\/td>\n<\/tr>\n
    Noise level<\/span><\/td>\n\u226460 dB<\/span><\/td>\n<\/tr>\n
    Protection rating<\/span><\/td>\nIP65<\/span><\/td>\n<\/tr>\n
    Cooling<\/span><\/td>\nintelligent air cooling<\/span><\/td>\n<\/tr>\n
    Monitoring<\/span><\/td>\nWi-Fi + Bluetooth <\/span>(included); GPRS \/ 4G \/ LAN <\/span>(optional)<\/span><\/td>\n<\/tr>\n
    Communication<\/span><\/td>\nRS485, <\/span>RS232, CAN<\/span><\/td>\n<\/tr>\n
    Surge protection<\/span><\/td>\nType II (DC), Type II (AC)<\/span><\/td>\n<\/tr>\n
    Weight<\/span><\/td>\n~<\/span>51.9 kg<\/span><\/td>\n<\/tr>\n
    Warranty<\/span><\/td>\n5 years \/ 10 years (depending on <\/span>installation location)<\/span><\/td>\n<\/tr>\n
    Grid standards<\/span><\/td>\nIEC 61727, IEC <\/span>62116, CEI 0-21, EN 50549, NRS 097, RD <\/span>140, UNE 217002, OVE R25, G99, VDE-AR-N <\/span>4105<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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    The max. AC current and max. PV power may vary depending on model variant\/region; please verify exact dimensions and parallel unit count with your current Deye SUN-14\/15\/16\/18\/20K-SG05LP3-EU-SM2 datasheet. Protection functions include: AC\/DC overvoltage and overcurrent protection, short-circuit protection, insulation resistance and residual current protection (RCD), ground fault monitoring, anti-islanding protection, DC disconnect, and optional AFCI. <\/span><\/em><\/p>\n<\/div>\n

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    Frequently asked <\/span>questions about the Deye SUN-20K-SG05LP3 <\/span>inverter<\/span><\/h3>\n<\/div>\n
    \n

    What does the SUN-20K-SG05LP3-EU-SM2 designation mean?<\/span><\/strong>
    \nThe “20K” refers to the 20 kW rated <\/span>power, the “SG05LP3” to the <\/span>three-phase, low-voltage (48 <\/span>V battery) hybrid platform; <\/span>the 20 kW is the highest member of the 14\u201320 kW sub-series.<\/span><\/p>\n<\/div>\n

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    What is the difference between the SUN-15K and SUN-20K SG05LP3?<\/span><\/strong>
    \nBoth models <\/span>are built on the same platform; <\/span>the main difference is the <\/span>rated power <\/span>(15 kW vs 20 kW), the <\/span>corresponding AC <\/span>current, the higher <\/span>PV input power, <\/span>and the maximum <\/span>charge\/discharge current (280 A vs 350 <\/span>A).<\/span><\/p>\n<\/div>\n

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    What battery does the Deye SUN-20K-SG05LP3 work with?<\/span><\/strong>
    \nIt is <\/span>compatible with the most common 48 V (40\u201360 <\/span>V) <\/span>batteries, <\/span>whether <\/span>lithium-ion or lead-acid, <\/span>with up to 350 A <\/span>charge\/discharge current \u2013 the series’ <\/span>highest current rating.<\/span><\/p>\n<\/div>\n

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    Can the Deye SUN-20K-SG05LP3 be installed outdoors?<\/span><\/strong>
    \nYes, thanks to <\/span>IP65 protection and <\/span>intelligent air cooling, <\/span>it is suitable for <\/span>outdoor installation, <\/span>with an operating <\/span>temperature range of <\/span>\u221240 to +60 \u00b0C (>45 \u00b0C <\/span>above <\/span>with derating).<\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    Download datasheet (PDF) Deye SUN-20K-SG05LP3 \u2013 20 kW three-phase low-voltage (48 V) hybrid inverter for larger residential and small commercial<\/p>\n","protected":false},"featured_media":30277,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[188],"product_tag":[],"class_list":["post-30276","product","type-product","status-publish","has-post-thumbnail","product_cat-inverter","first","instock","featured","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product\/30276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/comments?post=30276"}],"version-history":[{"count":4,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product\/30276\/revisions"}],"predecessor-version":[{"id":30813,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product\/30276\/revisions\/30813"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/media\/30277"}],"wp:attachment":[{"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/media?parent=30276"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product_brand?post=30276"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product_cat?post=30276"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deyenergie.com\/en\/wp-json\/wp\/v2\/product_tag?post=30276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}