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GoodWe GW20K-SDT-30 20kW Three-Phase String Inverter

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Specifications
Ac power kw 20
Max efficiency 98.5%
Mppt count 2
Phase three-phase
Weight kg 17.1

Description

The GoodWe GW20K-SDT-30 is a three-phase string inverter rated at 20 kW nominal output power, designed for high-power PV rooftop installations in residential and small commercial applications. Part of the SDT G3 series, it features 2 independent MPPT trackers with a maximum input voltage of 1100 V DC and supports up to 22 A per string. The inverter achieves a maximum efficiency of 98.5% and European efficiency of 98.2%.

The unit provides enhanced safety with integrated protections including PV string current monitoring, insulation resistance detection, residual current monitoring, PV reverse polarity protection, and anti-islanding. Optional Type II surge protection is available on both AC and DC sides, along with optional AFCI 3.0 functionality. Smart energy management capabilities include load control and 24-hour load consumption monitoring.

Built for silent, reliable operation with natural convection cooling (8–10 kW models) or smart fan cooling (12–20 kW models), the GW20K-SDT-30 features a compact design measuring 530 × 413 × 227 mm and weighing 17.1 kg. It supports multiple communication options including RS485, Wi-Fi, LAN, 4G, and optional Bluetooth, with IP66 ingress protection rating and operation in temperatures from −30 °C to +60 °C.

Frequently Asked Questions

Find quick answers to the most common questions about ordering, delivery and support.

When will my order be delivered?

We aim to deliver your order as quickly as possible (7–10 business days). Delivery is handled by an external logistics partner and shipped to the address you provided during checkout. We guarantee delivery no later than 30 days after order confirmation.

What are the shipping costs?

Shipping costs are calculated based on the order size and delivery address. In some cases, shipping is free above a certain order volume. This is clearly shown before you complete your purchase. If shipping costs apply, they are always visible at checkout.

Can I return my order?

Yes. You can return products within 14 days of receiving them. Please submit a return request first via the return form or by email. Once confirmed, the product must be sent back within 14 days, preferably in the original packaging and in the same condition.

Are there any costs for returns?

Yes. Returns are subject to an administration fee of 5% of the total order value. Return shipping costs are at your expense. After we receive and inspect the returned product, the remaining amount will be refunded within 7 days.

What warranty applies to the products?

Products are supplied by manufacturers or distributors. The manufacturer's warranty conditions apply to each product and may vary by brand and product type. Please consult the product documentation for exact coverage and duration. For inverter repairs performed via our service, we provide a 3-year warranty on proper operation of the repaired inverter.

Which payment methods are accepted?

We accept: American Express, Bancontact, iDEAL, Maestro, Mastercard and Visa. In some cases, and subject to credit approval, payment by invoice may also be possible. All available options are shown during checkout.

Can I cancel or change my order?

Cancellation is only possible before the order is processed. Please submit your cancellation request in writing. Cancellations without valid reason are subject to a fee of 5% of the total order value, with a minimum of €25. For custom-made or specially ordered products already processed, full costs may apply.

What should I do if my order arrives damaged?

If your order arrives damaged, contact us as soon as possible by email or phone. Include clear photos and a description of the issue. We will review your case and advise next steps. Reporting damage promptly helps us resolve it efficiently.

What happens if my delivery is delayed?

If a delay occurs, you will be informed in writing. We guarantee delivery no later than 30 days after confirmation. If delivery cannot be completed within that period, you may request a refund or a replacement product of equal value.

How can I contact customer support?

You can contact us by phone (+31 180 810402) or email (sales@search4solar.com). Our office is located in Barendrecht, the Netherlands, and we also operate from Valencia, Spain. We aim to respond to complaints within 7 days; if more time is needed, you will receive confirmation within 2 days with an estimated response date.
GoodWe

GoodWe GW20K-SDT-30 20kW Three-Phase String Inverter

The GoodWe GW20K-SDT-30 is a three-phase string inverter rated at 20 kW nominal output power, designed for high-power PV rooftop installations in residential and small commercial applications. Part of the SDT G3 series, it features 2 independent MPPT trackers with a maximum input voltage of 1100 V DC and supports up to 22 A per string. The inverter achieves a maximum efficiency of 98.5% and European efficiency of 98.2%.

The unit provides enhanced safety with integrated protections including PV string current monitoring, insulation resistance detection, residual current monitoring, PV reverse polarity protection, and anti-islanding. Optional Type II surge protection is available on both AC and DC sides, along with optional AFCI 3.0 functionality. Smart energy management capabilities include load control and 24-hour load consumption monitoring.

Built for silent, reliable operation with natural convection cooling (8–10 kW models) or smart fan cooling (12–20 kW models), the GW20K-SDT-30 features a compact design measuring 530 × 413 × 227 mm and weighing 17.1 kg. It supports multiple communication options including RS485, Wi-Fi, LAN, 4G, and optional Bluetooth, with IP66 ingress protection rating and operation in temperatures from −30 °C to +60 °C.

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