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Sungrow SH10RT-20 — 10,000 W Three-Phase Hybrid Inverter with Full 10,000 W Backup

By Pearl Solar Energy · Updated 2026-09-03 · ~5 min read

⚡ Quick answer

What is the SH10RT-20?

  • AC output: 10,000 W / 10,000 VA, three-phase 3/N/PE at 220/380 V or 230/400 V, 15.2 A max output current
  • PV input: 15,000 Wp recommended maximum, 1000 V max, 200 V - 950 V MPPT range, 2 MPPTs carrying 3 strings
  • Backup power: Full 10,000 W / 10,000 VA off-grid, 12,000 W / 12,000 VA peak for 5 minutes, changeover under 20 ms
  • Battery side: Li-ion, 150 V - 600 V, 30 A charge and discharge current, 10,600 W maximum charge and discharge power
  • Unit: 98.4% max and 97.9% European efficiency, IP65, natural cooling at around 30 dB(A), 27 kg, 5-year warranty extendable to 25 years

The Sungrow SH10RT-20 is a 10,000 W three-phase hybrid inverter that does two jobs from one box: cutting your daytime electricity bill and keeping the villa running when the grid drops. Unlike many hybrids that derate in backup mode, it delivers its full 10,000 W off-grid. This page translates the SH10RT-20 datasheet into what it means for a house with several air conditioners and a pool pump. Pearl Solar Energy's engineers specify this unit when designing hybrid systems with battery backup, and we handle the PEA permits for you. Compare it with other models on our equipment page.

What is the Sungrow SH10RT-20, and how does it differ from a standard grid-tied inverter?

A hybrid inverter combines three functions in one enclosure: converting DC from the panels, charging and discharging a battery, and supplying a backup circuit when the grid fails. A standard grid-tied inverter must shut down instantly during an outage for safety reasons, which is why a normal rooftop system leaves you in the dark despite having panels on the roof. The SH10RT-20 connects as three-phase 3/N/PE at 220/380 V or 230/400 V with a 270-480 V window, and draws a maximum output current of 15.2 A — the figure your electrician uses to size the breaker and main cable. On the DC side there are two MPPTs, one taking a single string and the other taking two, three strings in total, with a maximum PV current of 40.5 A split as 13.5 A and 27 A. That asymmetry matters: you cannot simply divide the array in half between the two inputs. The battery side accepts high-voltage lithium-ion from 150 V to 600 V, charges and discharges at 30 A, and handles up to 10,600 W in either direction — slightly more than the AC rating, so the battery is not the bottleneck on a bright afternoon. The standout figure is backup: a full 10,000 W / 10,000 VA off-grid with a 12,000 W / 12,000 VA peak for 5 minutes, which is what carries motor startup surges. Note that the 3,400 VA single-phase peak is conditional on a paired battery of at least 12.8 kWh; a smaller battery bank will not meet that condition, so it has to be planned at design stage. Not sure whether a battery makes sense for you yet? Start with our calculator.

Highlights from the datasheet

  • Full 10,000 W / 10,000 VA backup output: Many hybrids on the market derate heavily when the grid goes down. This one does not, which means you are not choosing which bedroom keeps its air conditioning during an outage.
  • 12,000 W / 12,000 VA peak for 5 minutes: This is the number that matters in a pool villa. Air conditioner compressors and pool pumps draw far more at startup than while running, and continuous ratings alone will mislead you.
  • Under 20 ms changeover: Fast enough that most household electronics never reboot — fridges, routers, home automation and IP cameras simply carry on through the transition.
  • 15,000 Wp of PV on a 10,000 W output: Deliberate oversizing means the battery refills faster while the house load is still being served from the array.
  • 150 V - 600 V high-voltage battery input at 10,600 W: Charge and discharge power slightly exceeds the AC rating, so a strong solar day is not throttled by the battery interface.
  • 98.4% maximum and 97.9% European efficiency: The European weighted figure is the fairer cross-brand comparison because it reflects a realistic mix of operating conditions rather than one ideal point.
  • IP65, fanless, around 30 dB(A), 27 kg: Natural cooling means no fan noise, so it can sit near living space, and at 460 x 540 x 170 mm two technicians can mount it comfortably.

Key specifications (SH10RT-20)

Specification Datasheet value
Rated AC output power10,000 W
Max. AC output apparent power10,000 VA
Max. AC output current / Rated AC voltage15.2 A — 3 / N / PE, 220/380 V; 230/400 V (3 เฟส) ช่วงแรงดัน 270-480 V, 50 Hz
Recommended max. PV input power15,000 Wp
Max. PV input voltage1000 V
MPPT operating voltage range200 V - 950 V (แรงดัน PV พิกัด 600 V, แรงดันเริ่มทำงาน 250 V)
No. of MPP trackers / strings per MPPT2 ชุด, 1 และ 2 สตริง (รวม 3 สตริง) — กระแส PV สูงสุด 40.5 A (13.5 A / 27 A)
Battery type / battery voltage rangeLi-ion, 150 V - 600 V
Max. charge / discharge current30 A / 30 A (ขึ้นกับแบตเตอรี่ที่ต่อร่วม)
Max. charge / discharge power10,600 W / 10,600 W
Backup rated output power (off-grid)10,000 W / 10,000 VA — พีค 12,000 W / 12,000 VA นาน 5 นาที, เฟสเดียวพีค 3,400 VA (เมื่อแบตมากกว่าหรือเท่ากับ 12.8 kWh)
Backup switch timeน้อยกว่า 20 ms
Max. efficiency / European efficiency98.4% / 97.9%
Degree of protectionIP65 (ระบายความร้อนแบบธรรมชาติ เสียงประมาณ 30 dB(A))
Operating ambient temperature range / Weight-25 องศาเซลเซียส ถึง 60 องศาเซลเซียส / 27 kg (ขนาด 460 x 540 x 170 mm)
Warranty5 ปีมาตรฐาน (เงื่อนไข APAC สำหรับ String Inverter) ซื้อขยายได้รวมสูงสุด 25 ปี

Note: every figure above comes straight from the Sungrow Power Supply Co., Ltd. (阳光电源股份有限公司) datasheet. Actual system design (strings per MPPT, cable sizing, breakers) must be calculated for each site.

Why this model suits Phuket

  • Storm-season outages: Phuket gets heavy rain and wind in bursts. A changeover under 20 ms at the full 10,000 W means the household barely registers the interruption.
  • Villas with air conditioning and pool pumps: The 12,000 W / 12,000 VA five-minute peak speaks directly to motor startup loads, which is a far more relevant number for a pool villa than the continuous rating alone.
  • Hot, humid conditions: Rated IP65 with natural cooling and an operating range of -25 to 60 degrees Celsius. We still mount it shaded and out of driving rain, because shade and airflow are what extend service life in this climate.
  • Most premium homes here are three-phase: Which matches this unit's 3/N/PE output at 220/380 V or 230/400 V across a 270-480 V window. See what a full installation involves under services.

Who it suits

  • Pool villas and detached homes on three-phase supply: Owners who want lower bills and genuine backup from a single piece of equipment rather than two separate systems.
  • Properties with unreliable supply: Homes at the end of a distribution line, where the sub-20 ms changeover stops electronics rebooting every time the grid flickers.
  • Short-term rental villas: Where a single outage during a guest's stay costs you a review. Full-rated backup is easier to justify commercially than most owners expect.
  • Owners phasing their investment: Start with panels and the inverter now, add the battery later — the battery interface is already built in, so nothing has to be replaced.
  • Not the right fit for: Single-phase homes, or commercial loads well beyond the 10,000 W class, which should look at a larger unit. See solar cost in Phuket for sizing context.

Summary

The Sungrow SH10RT-20's real selling points are not the headline rating but three specific numbers: full 10,000 W backup output, a 12,000 W peak held for 5 minutes, and changeover in under 20 ms. Together those decide whether your villa actually keeps functioning during an outage. Before ordering, settle three things: the 5-year standard warranty and whether you want it extended toward 25 years, long-term stock and spares availability from the Thai distributor given that Sungrow has released newer three-phase hybrid series, and written confirmation of which battery models are compatible with this specific unit. If you would like us to size the battery bank for your actual consumption, contact us and we will run the numbers.

See other models from this brand on the Sungrow overview, or browse all the equipment we install.

Download the datasheet (PDF) — full manufacturer specification sheet

Frequently asked questions

What are the main Sungrow SH10RT-20 specifications?

Rated AC output is 10,000 W with 10,000 VA maximum apparent power and 15.2 A maximum output current, connected as three-phase 3/N/PE at 220/380 V or 230/400 V across a 270-480 V window at 50 Hz. Recommended maximum PV input is 15,000 Wp at up to 1000 V, with an MPPT range of 200 V to 950 V, 600 V nominal and 250 V startup. There are two MPPTs, one carrying a single string and the other two, three strings in total, with 40.5 A maximum PV current split as 13.5 A and 27 A. The battery side is Li-ion from 150 V to 600 V at 30 A charge and discharge, up to 10,600 W. Efficiency is 98.4% maximum and 97.9% European; the unit is IP65, 27 kg, 460 x 540 x 170 mm.

How much power does the SH10RT-20 supply during a blackout?

In off-grid backup mode it delivers its full rated 10,000 W / 10,000 VA — the same as when grid-connected, which is unusual. Many competing hybrids drop to a fraction of nameplate output once the grid disappears. It also sustains a peak of 12,000 W / 12,000 VA for up to 5 minutes, which is the headroom that absorbs inrush current when an air conditioner compressor or pool pump starts. For single-phase loads there is a stated 3,400 VA peak, but that figure is conditional on the connected battery being at least 12.8 kWh; a smaller bank will not satisfy it. Changeover takes under 20 ms, fast enough that most household electronics never reboot.

How many panels and strings can the SH10RT-20 handle?

Sungrow recommends up to 15,000 Wp of panels against the 10,000 W AC rating. That oversizing is especially valuable in a battery system, because it lets the battery refill while the array is simultaneously covering daytime household load. String capacity is three, distributed across two MPPTs: one input takes a single string, the other takes two. Maximum PV current is 40.5 A total, split as 13.5 A on one input and 27 A on the other. The design trap to avoid is assuming you can split the array evenly between the two inputs — the current limits are not symmetrical. Total open-circuit string voltage must also stay under 1000 V once the coldest expected temperature is accounted for.

What warranty does the SH10RT-20 carry, and will spares be available?

Under the manufacturer's APAC warranty terms covering Thailand, string inverters carry a 5-year standard warranty, extendable by purchase to a combined total of 25 years, and it must be bought through an appointed distributor. The question worth asking your supplier is long-term stock and spare-parts availability: Sungrow has released newer three-phase hybrid series, although the RT-20 remains on the manufacturer's official product listing. For Phuket specifically, ask for the Thailand-applicable warranty document and read it before finalising the mounting position, because the manufacturer applies extra conditions to installations near the coastline. That is a conversation to have at design stage, not at claim stage.

Which batteries work with the SH10RT-20, and does it need three-phase power?

Three-phase supply is required — the output is 3/N/PE at 220/380 V or 230/400 V and it cannot connect to a single-phase meter. For storage, the datasheet specifies lithium-ion in a 150 V to 600 V range, meaning a high-voltage battery architecture rather than the 48 V low-voltage packs common in budget systems. It charges and discharges at 30 A and handles up to 10,600 W in both directions. One important caveat: the manufacturer's published compatibility list for its residential battery range does not always match what installers assume, so we always confirm the exact battery model with Sungrow or the appointed distributor before finalising a package, to avoid communication or warranty problems later.

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