Full specifications

Brand	SolarMax
Inverter Specifications
Model	SM-ONYX-UL-12KW
Inverter type	Hybrid
Grid type	Three Phase
IP class	IP65
PV Input Data
Max DC input power	40000 W
PV input voltage	1000 V
MPPT voltage range	160-980 V
Max. PV input current	20 A
No. of MPPT	3
No. of strings per MPPT	1
Startup voltage	120 V
AC Output Data
Rated AC output	12000 W
Rated AC output current	17.4A A
Rated voltage	400 V
Smart load / generator input	Yes
Parallel operation	Yes
Power factor	> 0.99 (adjustable 0.8 leading to 0.8 lagging)
Battery Data
Battery type	Lithium & Lead-Acid
Battery voltage range	40-60 V
Max. charging current	380 A
Max. discharging current	300 A
BMS	RS485 / CAN / WiFi / LAN
Protections
PV reverse polarity detection	Yes
Insulation resistance detection	Yes
Leakage current detection	Yes
AC overcurrent protection	Yes
Output short circuit protection	Yes
Surge protection	Yes
Over voltage protection	Yes
General Specifications
Weight	50 kg
Operating temperature	-25°C ~ +60°C
Max. efficiency	97.6%
Size (W×H×D)	460 × 742 × 266 mm

Note: Grid export is documented on the datasheet, so this model can be net-metered. 40,000 W of array access on a 12 kW inverter, of which 30,000 W is usable - the widest oversizing allowance in this catalogue. Three MPPTs at 20 A each, one string per tracker, over a 160-980 V window on a 1000 V ceiling. TWO battery inputs on a 48 V bank (40-60 V), giving 380A/300A charge and discharge and 20,000W/14,500W of power - the highest battery current of any inverter here. Maximum apparent power 13,200 VA at 3*17.4A per phase, 3*20A maximum. Grid passthrough 45 A, and up to 8500 W can be drawn on a single phase, which matters if the load is unbalanced - three-phase unbalanced output is supported. Backup delivers 200% for 10 s and switches in under 10 ms. Dedicated generator input rated 30,000 W. Smart load and AC coupling supported, stacks to 9 units. IP65, 50 kg on a wall bracket, HMI touch LCD.