SolaX X3 Hybrid G4 8-15kW Three Phase Inverter | X3-HYBRID-G4

Description

The SolaX X3 Hybrid G4 is a three-phase hybrid inverter that combines solar PV conversion and high-voltage battery storage control in one unit. It is supplied here in 8 kW, 10 kW, 12 kW and 15 kW ratings for larger homes and light commercial premises.

It offers 200% PV oversizing, up to 110% AC output, up to 97.5% charging and discharging efficiency and three-phase unbalanced output of up to 5 kW per phase. EPS backup switches over in under 10 ms, and up to 200% EPS overload output for 10 seconds (varies by model) helps start heavy loads.

A 120–800 V battery input, smart load management for heat pumps and EV chargers, and on- and off-grid parallel operation up to 150 kW make the X3 Hybrid G4 ready for demanding installations, protected to IP65 with Type II SPD on both AC and DC sides.

200%

PV oversizing

97.5%

Charge / discharge efficiency

120–800 V

Battery voltage range

<10 ms

EPS switchover

150 kW

On / off-grid parallel

IP65

Ingress protection

Installation and grid connection: Must be installed by a qualified, competent person in line with BS 7671 and the manufacturer's manual. Based on the rated output current per phase, the 8 kW and 10 kW ratings fall under G98 (16 A per phase or less), while the 12 kW and 15 kW ratings exceed 16 A per phase and need a G99 application before installation.

Battery pairing: SolaX states the inverter is compatible with a minimum of 3 units of HS25 / HS36 batteries. If the total voltage of those 3 batteries is below 127 V and there is no PV input, the system will not start up.

EPS overload varies by rating: SolaX states that overload capabilities vary by model. Confirm your peak backup load requirement against the manufacturer's specification for your chosen rating.

High-power panel support: SolaX rates the range for up to 28 A input per MPPT for high-power solar panels. The exact MPPT arrangement depends on the rating, so confirm the string layout against the manufacturer's installation manual.

Key features

200% PV oversizing

Up to 200% PV oversizing and up to 110% AC output, with two MPPT trackers, a wide 180–950 V MPPT range and a global MPP scan for optimal harvest.

Three-phase unbalanced output

Three-phase unbalanced output supports uneven loading, with a maximum of 5 kW per phase.

UPS-level backup

Switchover in under 10 ms with up to 200% EPS overload output for 10 seconds (varies by model) to ride through grid outages.

High-voltage battery input

Works with lithium and lead-acid batteries across 120–800 V, with 30 A continuous charge and discharge current and up to 97.5% charge and discharge efficiency.

Smart loads and grid services

Smart load management for heat pumps and smart EV chargers, intelligent time-of-use energy management and VPP ready for ancillary services.

Scalable and protected

On- and off-grid parallel operation up to 150 kW, IP65, -35 to +60°C operation and Type II SPD on AC and DC sides. Quick set-up with a U-disk.

Technical specifications

PV input

Max. PV input voltage

1,000 V

Rated PV input voltage

640 V

MPPT voltage range

180–950 V

Start-up voltage

200 V

No. of MPP trackers

2

Battery

Battery type

Lithium / lead-acid

Battery voltage range

120–800 V

Max. charge / discharge current

30 A

AC grid connection

Rated AC voltage

3/N/PE, 220 / 380 V or 230 / 400 V

Rated AC frequency

50 / 60 Hz

Power factor range

Adjustable, 0.8 lagging to 0.8 leading

THDi (rated power)

<3%

Max. efficiency

98.0%

European efficiency

97.7%

Topology

Non-isolated

EPS (backup) output, with battery

Rated EPS voltage / frequency

230 V / 400 V, 50 / 60 Hz

Switchover time

<10 ms

General

Ingress protection

IP65

Operating temperature range

-35 to +60°C (derating above 45°C)

Max. operating altitude

3,000 m

Relative humidity

4–100% RH (condensing)

Overvoltage category

Mains III, battery II, PV II

Dimensions (W × H × D)

503 × 503 × 199 mm

Net weight

30 ± 1 kg

Cooling

Natural cooling or smart air cooling, depending on rating

Night consumption

<40 W standby, <5 W idle

Communication

CT / meter (optional), external control RS485, Pocket WiFi (Pocket LAN / 4G optional), DRM, USB upgrade, NTC (optional)

Protection

Protections

DC reverse-polarity, DC isolation, residual current detection, AC overcurrent, AC short-circuit, over / under voltage, grid monitoring, DC injection monitoring, back-feed current monitoring, over-temperature

Active anti-islanding

Frequency shift

Surge protection

DC Type II, AC Type II

Arc-fault circuit interrupter (AFCI)

Optional

Standards

Certifications

EN/IEC 62109-1/-2, VDE4105, G99, G98, AS4777, EN50549, CEI 0-21, IEC61727, PEA / MEA, NRS-097-2-1, RD1699, TOR

Model range

Rated power

Datasheet model

Rated AC current

Max. AC output

Max. AC input

Max. recommended PV

8 kW

X3-HYBRID-8.0-D

11.6 A

8.8 kVA / 12.9 A

16 kVA / 25.8 A

16 kWp

10 kW

X3-HYBRID-10.0-D

14.5 A

11.0 kVA / 16.1 A

20 kVA / 32.0 A

20 kWp

12 kW

X3-HYBRID-12.0-D

17.5 A

13.2 kVA / 19.3 A

20 kVA / 32.0 A

24 kWp

15 kW

X3-HYBRID-15.0-D

21.8 A

15.0 kVA / 24.1 A

20 kVA / 32.0 A

30 kWp

Frequently asked questions

Which power ratings are available?

The X3 Hybrid G4 is supplied in 8 kW, 10 kW, 12 kW and 15 kW. Select the rating from your array size (maximum recommended PV runs from 16 kWp to 30 kWp) and your three-phase load profile.

What does three-phase unbalanced output mean?

It means the inverter can supply loads that are not evenly spread across the three phases, up to a maximum of 5 kW on a single phase. This suits properties with heavy single-phase loads such as electric showers or ovens.

Which batteries and voltages does it support?

Lithium and lead-acid batteries across 120–800 V, up to 30 A charge and discharge. SolaX states a minimum of 3 HS25 / HS36 battery units, and the system will not start if those 3 units total less than 127 V with no PV input.

How does the EPS backup work?

With a battery connected, the EPS output supplies 230 V / 400 V and switches over in under 10 ms. SolaX quotes up to 200% EPS overload output for 10 seconds, which varies by model, so check the specification for your rating.

Do I need DNO approval in the UK?

Yes. The 8 kW and 10 kW ratings have rated output currents of 11.6 A and 14.5 A per phase, within the G98 limit of 16 A per phase. The 12 kW and 15 kW ratings (17.5 A and 21.8 A) exceed it and need a G99 application before installation.

Can I run several inverters together?

Yes. The X3 Hybrid G4 supports on- and off-grid parallel operation up to 150 kW, so larger sites can add capacity without changing inverter type.

BTU Calculator

BTU & WATT Calculator

Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

Calculate

Required Heating

0

Watts

0

BTUs