15kW Three-Phase Hybrid Solar Inverter LAB15KW

The LAB15KW series is a 15kW three-phase hybrid solar inverter for solar generation, battery storage and backup power. It supports a nominal 48V lead-acid or lithium battery system and two MPPT channels. Choose the LAB15KW-WIFI or LAB15KW-4G model to match your communication requirements.

Key Features

15kW three-phase hybrid solar inverter with 48V battery support and two MPPT channels.
Supports lead-acid and lithium batteries, with two parallel battery input ports and CAN / RS485 battery communication.
Maximum battery charge / discharge current of 290A and maximum charge / discharge power of 15kW.
UPS functionality with a typical transfer time of 4ms, plus grid peak shaving and valley filling.
Off-grid peak capability of twice rated output for 10 seconds.
Supports up to 150% three-phase unbalance and a maximum single-phase output of 50% of rated power.
Independent generator interface configurable for AC coupling to a PV inverter or intelligent load output.
IP66 enclosure, LCD and app interface, with Wi-Fi and 4G model choices.
USB flash drive and online firmware upgrade support.

Model Options

Model	Communication Version
LAB15KW-WIFI	Wi-Fi
LAB15KW-4G	4G

Technical Specifications

PV Input

Recommended maximum connected PV power	30000W
Maximum PV input power	24000W
Maximum PV input voltage	800VDC
PV start-up voltage	160VDC
Rated PV input voltage	550VDC
MPPT operating voltage range	160–650VDC
MPPT full-load voltage range	400–650VDC
MPPT channels	2
Maximum MPPT input current	27A + 20A across the two channels
Maximum MPPT short-circuit current	40A + 30A across the two channels
PV strings per MPPT channel	2 + 1
Maximum PV backfeed current	0A

Battery

Compatible battery types	Lead-acid or lithium battery
Rated battery voltage	48V
Battery voltage range	40–60V
Maximum battery charge / discharge current	290A
Maximum battery charge / discharge power	15000W
Battery communication	CAN / RS485
Battery input ports	2, connected in parallel

AC Input / Output (Grid, Load and Generator)

Rated AC active power	15000W
Maximum AC apparent power	16500VA
Off-grid peak power	2 × rated power for 10 seconds (30kW)
Rated AC input / output current	22.8 / 21.8 / 20.9A
Maximum AC input / output current	25A
Maximum three-phase unbalanced output current	34.1A
Maximum grid bypass current	50A
Maximum diesel generator bypass current	45A
Maximum output fault current	50A
Maximum output overcurrent protection	73.5A
Rated AC input voltage	380V
AC output voltage	220/380V, 230/400V, 240/415V
AC input / output voltage range	0.85Un–1.1Un
Grid connection	Three-phase: 3L + N + PE
Grid frequency / range	50Hz / 45–55Hz; 60Hz / 55–65Hz
Power factor range	0.8 leading to 0.8 lagging
Current harmonics at rated power	<3%
Grid DC component	<0.5% of rated current (In)
Typical transfer time	4ms
Three-phase unbalance capability	Up to 150%; maximum single-phase output is 50% of rated power

Efficiency

Maximum efficiency	97.60%
European efficiency	97.00%
MPPT efficiency	>99.9%

Protection

PV reverse polarity protection	Yes
Anti-islanding protection	Yes
Output short-circuit protection	Yes
Ground fault detection	Yes
Insulation resistance detection	Yes
Overcurrent protection	Yes
Overtemperature protection	Yes
Surge protection	Type II (DC), Type II (AC)
Arc fault circuit interrupter (AFCI)	Optional
DC switch	Yes
Leakage current monitoring	Yes
Grid monitoring	Yes

General Data

Unit dimensions (W × H × D)	450 × 660 × 240mm
Carton dimensions (W × H × D)	830 × 600 × 365mm
Net weight	39kg
Gross weight	45kg
Relative humidity	0–100%
Operating temperature	−25°C to +60°C; derating above 45°C
Storage temperature	−45°C to +85°C
Noise level	<45dB
Altitude	2000m
Cooling	Intelligent air cooling
Ingress protection	IP66
Overvoltage category	OVC II (DC), OVC I (AC), as listed
Topology	Transformerless
Protection class	Class I
Communication interfaces	RS485 / CAN / Bluetooth / Wi-Fi; LAN / 4G / GPRS optional
Anti-reverse current method	1 CT; electric meter optional
User interface	LCD and app
Standby power consumption	<25W in night mode
PV terminals	MC4-compatible terminals; maximum conductor size 6mm²
Battery terminals	Terminal block; maximum conductor size 50mm²
AC terminals	Terminal block; maximum conductor size 10mm²
Firmware upgrades	USB flash drive and online upgrades
Generator port	Independent diesel generator interface; configurable for AC coupling to a PV inverter or intelligent load output

Configuration Notes

The rated AC output is 15kW. The maximum PV input power is 24kW, while the recommended maximum connected PV module power is 30kW. These are separate ratings.
The two battery input ports are parallel battery connections. They do not specify a supported number of parallel inverters.
AFCI, the electric meter and LAN / 4G / GPRS communication options should be confirmed with the selected model configuration. Optional items are not listed as standard supplied accessories.
Output derating applies above 45°C ambient temperature.

LAB15KW-WIFI

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