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        Sungrow | 15kW Three Phase String Inverter 22.5kWp PV Input | IP65 C5 AFCI

        The Sungrow SG15RT is a 15kW three-phase string inverter for 1000 Vdc systems, rated 15000W AC output against a recommended maximum PV input of 22.5kWp. The SG15RT carries two independent MPPTs taking two strings each across a 160V to 1000V MPP range, and reaches 98.5% maximum efficiency. A quick arc fault circuit interrupter, Type II surge protection on both DC and AC, and a C5 corrosion rating are built in. It complies with AS/NZS 4777.2:2020.

        A 1000 Vdc architecture reconfigures the array design rather than merely the inverter selection. A 160V to 1000V MPP range accommodates longer strings, which delivers fewer strings across an equivalent roof. Fewer strings translates to reduced DC cable, fewer MC4 joints, and fewer connectors degrading across twenty years. Each connector eliminated is one fewer location where a series arc can develop. The SG15RT accepts 22.5kWp against 15000W, a 1.5 to 1 DC oversize on two trackers carrying two strings apiece.

        One design consideration matters before the strings are configured. Sungrow rates the inverter to 1100V maximum PV input, but the MC4 connectors supplied in the delivery must not be used where system DC voltage can exceed 1000V. MC4 Evo2 connectors are mandatory in that situation, and the inverter idles in standby between 1000V and 1100V. Verify the string calculation against the connector rating rather than the inverter rating, because the two ceilings are different figures.

        Features

        • 15000W rated AC output, three phase — the SG15RT feeds 3/N/PE at 220/380V, 230/400V or 240/415V, rated 21.7A per phase at 230V with a 25A maximum output current.
        • 22.5kWp recommended maximum PV input — two independent MPPTs carrying two strings each across a 160V to 1000V MPP range, at 50A maximum input current split 25A per tracker.
        • Quick arc fault circuit interrupter — integrated AFCI detects series arcing on the DC side, which is the primary fire risk in a rooftop photovoltaic array.
        • C5 corrosion rating — the highest classification in the corrosion scale, which suits coastal, industrial, and marine-adjacent installations.
        • Type II DC and AC surge protection — built in on both sides alongside an integrated DC switch, so those components do not need specifying separately.
        • Ground fault and string current monitoring — the SG15RT watches each string individually, with DC reverse connection protection, AC short circuit protection, leakage current protection, grid monitoring, and PID recovery.
        • 98.5% maximum efficiency — 98.1% European efficiency, harmonic distortion under 3% at rated power, and power factor above 0.99 adjustable 0.8 leading to 0.8 lagging.
        • AS/NZS 4777.2:2020 compliant — with LVRT and HVRT ride-through, active and reactive power control, and power ramp rate control through the DI and DO connections.
        • Smart forced air cooling — IP65 rated from -25 to 60 degrees at 0 to 100% humidity to 4000m, drawing under 6W overnight.
        • Push-in connectors and app commissioning — the SG15RT weighs 21kg at 370 x 480 x 195mm on a wall-mounting bracket, with commissioning handled through the app.
        • WLAN, Ethernet and RS485 — smart IV curve scanning, 24/7 live monitoring, and over-the-air firmware updates, with an LED display on the unit.
        • MC4 Evo2 required above 1000V — the supplied MC4 connectors are rated to 1000V, so a system whose DC voltage can exceed that needs MC4 Evo2 connectors instead.

        Where to use

        • Three-phase residential solar — the SG15RT suits larger homes on a three-phase supply where a single-phase inverter cannot balance the load.
        • Small commercial rooftops — 22.5kWp of modules on a 15000W inverter covers a workshop, shed, or small tenancy roof.
        • Coastal and marine-adjacent sites — the C5 corrosion rating suits salt exposure that degrades lower-rated enclosures well inside the warranty period.
        • Long-string array designs — a 160V to 1000V MPP range carries more modules per string, cutting DC cable runs and connector count.
        • Bifacial and high-power module arrays — Sungrow rates the SG15RT for bifacial modules with a 180V startup and a wide operating window.
        • Rural and high-ambient installations — smart forced air cooling with a -25 to 60 degree range and 4000m altitude ceiling covers hot, dusty and elevated sites.
        • Fleet-monitored commercial systems — IV curve scanning and 24/7 live monitoring identify string faults without attending the roof.

        The SG15RT is three phase only, feeding 3/N/PE, so a single-phase supply needs a different inverter class entirely. It is a grid-tied string inverter with no battery input, so storage requires a hybrid. The supplied MC4 connectors are limited to 1000V even though the inverter accepts 1100V, and MC4 Evo2 connectors are required above that threshold. Installation must be carried out by a licensed electrician and the grid connection made in accordance with AS/NZS 4777.2:2020.

        (SG15RT)

        No. Sungrow rates the inverter to 1100V maximum PV input, but states the MC4 connectors included in the scope of delivery must not be used where the maximum system DC voltage can exceed 1000V. MC4 Evo2 connectors are required in that case. The inverter also enters standby between 1000V and 1100V.

        Four. Two independent MPPT inputs, each carrying two PV strings, across a 160V to 1000V MPP voltage range. Maximum PV input current is 50A, split 25A per tracker, with 64A maximum DC short-circuit current at 32A per tracker. The DC connector itself is rated to 30A.

        Yes. A quick arc fault circuit interrupter is integrated. Series arcing on the DC side is the main fire risk in rooftop photovoltaic arrays, typically at a degraded connector. Type II surge protection on both DC and AC, an integrated DC switch, ground fault monitoring, and PV string current monitoring are also built in.

        21.7A per phase at 230V, with a maximum AC output current of 25A. Rated AC output power is 15000W and maximum AC output apparent power is 16500VA. The inverter feeds three phases at 3/N/PE, across 220/380V, 230/400V or 240/415V, with an AC voltage range of 180 to 276V per phase.

        No. The SG15RT is a grid-tied string inverter with no battery input. A three-phase installation requiring storage needs a hybrid such as the Sungrow SH10RT. Confirm the inverter class before ordering, because a string inverter cannot be converted to a hybrid afterwards.

        No. This is a three-phase inverter feeding 3/N/PE with three feed-in phases and three connection phases. Single-phase installations need a single-phase unit such as the Sungrow SG8.0RS-ADA for grid-tied work, or the SH10.0RS where storage is required.

        AS/NZS 4777.2:2020, IEC/EN 62109-1 and 62109-2, IEC 61727, IEC 62116 and EN 50530, among others. Grid support covers LVRT and HVRT ride-through, active and reactive power control, and power ramp rate control. Communication runs over WLAN, Ethernet, RS485, with DI and DO connections.

        Ten years in two phases. The first 5 years cover full product replacement for any defect. The following 5 years cover parts only, with the warranty paying for components needing replacement or repair. Warranty runs from the invoice date and claims are handled by return to Sparky Direct.

        The Sungrow SG15RT is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.


        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.


        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        This warranty offers a combined coverage of 10 years, divided into two phases:

        First 5 Years: During this period, you are entitled to a full product replacement in case of any issues or defects. This means if your product malfunctions within the first 5 years, you'll receive a brand-new replacement.

        Following 5 Years: After the initial 5 years, the warranty continues for an additional 5 years, but it shifts to covering parts only. In this phase, if any product components need replacement or repair, the warranty will cover the cost of those parts.

        This comprehensive warranty (Warranty Method: Return to Sparky Direct) ensures both the longevity and performance of your product, offering you peace of mind for a full decade. 

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand SUNGROW
        SKU SG15RT
        Model # SG15RT
        Package Weight 23.000kg
        TYPE VALUE
        Type String Inverter
        Brand Sungrow
        Colour White
        Height (mm) 480
        Width (mm) 370
        Depth (mm) 195
        Mounting Wall Bracket
        Voltage (V) 380/400/415
        Wattage (W) 15000
        IP Rating IP65

        Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.

        Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.

        Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.

        Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.

        For website terms and conditions https://www.sparkydirect.com.au/terms-of-use

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