Deye SUN-10K-SG01HP3-EU-AM2 (10 kW) - three-phase hybrid inverter, high-voltage battery

The entry point to high-voltage systems: ten kilowatts on three phases

The SUN-10K-SG01HP3-EU-AM2 is the smallest high-voltage three-phase model in this catalogue, and it is usually where people start when they want to build around a high-voltage battery rather than 48 V modules. Suitable sites: a 150 to 250 m² house with a three-phase service, a small farm with pumps, a workshop, an office with a server room, a shop with refrigerated cabinets. Ten kilowatts spread across three phases means roughly 3.3 kW per phase, enough for an ordinary set of domestic loads plus one or two medium three-phase motors. The main reason to choose a high-voltage model over the low-voltage SUN-10K-SG04LP3-EU (item 2061) is the battery power path: current here is only 37 A instead of 210 A, which means 6 mm² cable instead of 70 and a 50 A breaker instead of 250. But the battery has to be different too: a high-voltage bank of 160 to 700 V plus the Deye HVB750V/100A control box (item 2099).

A full-load window from 325 V — the most forgiving in the line

Among the HP3 models this one makes the mildest demand on array voltage: full power is delivered while the string stays within 325 to 850 V, whereas the fifteen-kilowatt version already requires 420 V and the twenty-five-kilowatt one 625 V. In practice that means shorter strings: eight to ten modern modules in series give around 340 to 400 V at the operating point and already unlock the inverter completely. On a small or awkward roof that is a tangible advantage, because no room has to be found for a long row of panels. The overall MPPT window is 150 to 850 V against a 1000 V maximum with start-up from 180 V; there are two asymmetric trackers, the first taking two strings at 26 A of operating current, the second one string at 20 A. Up to 13 kW of panels can be connected against the 10 kW rating, with a rated PV voltage of 600 V.

A 160 to 700 V battery at 37 A

The battery channel is built for lithium-ion high-voltage banks with a working range of 160 to 700 V and 37 A in both directions. The power the inverter can draw from storage depends directly on cluster voltage: 37 A at 300 V is 11 kW, so the full ten kilowatts are already available, while at 200 V only about seven remain. The minimum sensible bank for this model is therefore six 51.2 V modules, roughly 307 V — exactly what a BOS-G30 (item 1956) with 30.7 kWh provides. Lead-acid batteries are not supported at all, and low-voltage lithium modules such as SE-F or RW-F do not suit HP3 — the first thing people confuse when specifying a system. The 2099 control box is mandatory: it operates across 120 to 750 V, carries 100 A nominal and is effectively the node through which the inverter sees the battery cluster.

40 A of transit per phase: this model's main limitation

Maximum grid input current is 40 A per phase, about 26 kW of pass-through, half what the larger HP3 models allow with their 80 A. For a house with gas heating and an ordinary set of appliances that is ample, but if the site has an electric boiler, industrial equipment or a welding bay, the entire service cannot be routed through the inverter — heavy loads go on a separate line bypassing the backed-up circuit. That approach is the more sensible one for this model anyway: the backup carries the boiler, pumps, lighting, fridges, internet and working sockets, while everything else stays on the general supply. Rated output current is 15.2 A per phase at 220 V and 14.5 A at 230 V with a maximum of 16.7 A, so a 20 A per phase backup line covers the need. Apparent power is 11 kW, and in island mode the inverter holds one and a half times its rating — about 15 kW for ten seconds.

What to expect when the grid fails

The transfer to island mode is automatic and the three-phase output is generated by the inverter's own electronics, so three-phase motors keep running exactly as they did on the grid. The starting margin here is one and a half times rather than double as on the low-voltage LP3 units: direct starting of a 4 to 5 kW motor will go through, while anything larger is better fitted with a soft starter. A generator input is provided, and during long outages the scheme works like this: the generator feeds the site and charges the battery through the high-voltage channel while the inverter absorbs inrush surges. Charging from grid or generator is configurable by time and current, so the system can be prepared in advance for a known outage schedule. The physics of a high-voltage battery is worth bearing in mind too: it gathers its kilowatt-hours at that same 37 A, so a 30 kWh cluster takes around three hours for a full charge at 300 V.

Mounting, cooling and monitoring

The 408 by 638 by 237 mm housing weighs 30.5 kg — identical to the rest of the HP3 models up to 25 kW, and that is one of the advantages of the high-voltage architecture: a ten-kilowatt inverter goes onto the wall with two people and no lifting gear. Cooling is intelligent with typical noise up to 55 dB: no problem in a boiler room or technical space, though a living area deserves a different spot. Protection is IP65, the operating range is -40 to +60 °C with derating above +45 °C, mounting is on the wall and the PV side uses MC4 connectors. The BMS link runs over RS485 or CAN with protocol self-adaptation, and control comes from the display on the housing and the mobile app. In a high-voltage system monitoring carries extra meaning: the curves show whether the cluster actually reaches its working voltage, since available power depends on precisely that.

How it differs from its neighbours in this catalogue

The next steps up the HP3 line are the SUN-12K-SG01HP3-EU-AM2 (item 2064) with 80 A of transit and a 15.6 kW array, and the SUN-15K-SG01HP3-EU-AM2 (item 2058) with a 19.5 kW array; both share this housing at 30.5 kg and the same 37 A battery current. The larger SUN-20K-SG01HP3-EU-AM2 (item 2070) and SUN-25K-SG01HP3-EU (item 2075) have symmetric 26 A trackers but require array voltages from 500 and 625 V respectively for full power — harder to achieve on a small roof. The low-voltage alternative at the same rating is the SUN-10K-SG04LP3-EU (item 2061): cheaper 48 V batteries, a double peak and slightly quieter cooling, but 210 A of current and 70 mm² cable. If you plan storage up to 15 kWh the low-voltage scheme is usually the better value; from 20 kWh upward this model with a high-voltage cabinet wins on both installation effort and losses.

Tell us which high-voltage battery you are considering and how many modules it holds, and we will check whether the cluster reaches the voltage needed for a full ten kilowatts.