SolaX Three Phase C&I Hybrid Inverter X3-ULTRA 20K

Introduces a new C&I energy storage solution, suitable for factories, malls, offices, and warehouse.

With 2/3 MPPTs, it maximizes power generation, enhancing compatibility with complex solar systems.

Even if one MPPT encounters a fault, it won’t affect the operation of other arrays.

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

Available from warehouse

Product Features

PV INPUT	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Max. recommended PV array power	30kWp		40kWp			50kWp	60kWp
Max. PV input voltage①	100V
Nominal PV input voltage	600V
Operating voltage range	120~950V
MPPT voltage range②	160~950V
Start-up voltage	200V
No. of MPP trackers / Strings per MPP tracker	2 / (2 / 2)	3 / (2 / 2 / 2)	2 / (2 / 2)		3 / (2 / 2 / 2)
Max. input current per MPPT (MPPT1/2/3)	36 A / 36 A	36 A / 36 A / 36 A	36 A / 36 A		36 A / 36 A / 36 A
Max. input short circuit current per MPPT (MPPT1/2/3)	45 A / 45 A	45 A / 45 A / 45 A	45 A / 45 A		45 A / 45 A / 45 A

AC INPUT & OUTPUT (ON-GRID)	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Rated output power	15000 W (AS4777 14999 W)		19999 W	20000 W	20000 W	25000 W (VDE4105 24900 W)	30000 W (AS4777 29999 W,VDE4105 29900 W)
Rated output current	21.8 A		29.0 A	29.0 A	29.0 A	36.3. A	43.5 A
Max. output apparent power	16500 VA (AS4777 14999 VA)		19999 VA	22000 VA	22000 VA	27500 VA (VDE4105 24900 VA)	30000 VA (AS4777 29999 VA,VDE4105 29900 VA)
Max. output continuous current	24.0 A (AS4777 21.8 A)		29.0 A	31.9 A	31.9 A	39.9 A (VDE4105 36.3 A)	43.5 A
Nominal AC voltage	3 / N / PE, 220 / 380 V 3 / N / PE, 230 / 400 V
Max. AC input apparent power	15000 VA		15000 VA	20000 VA	20000 VA	25000 VA	30000 VA
Max. AC input current	21.8 A		29.0 A	29.0 A	29.0 A	36.3 A	43.5 A
Nominal AC frequency	50 Hz / 60 Hz
Adjustable Power Factor range	~ 1 (0.8 lagging to 0.8 leading)
THDi (Rated power)	< 3%

BATTERY	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Battery type	Lithium
Battery voltage range	120 ~ 800 V
Max. charge / discharge current	60 A (30 A × 2)

EPS (OFF-GRID) OUTPUT (WITH BATTERY)	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Rated EPS output voltage, frequency	230 V / 400 V, 50 Hz / 60 Hz
Rated EPS output power	15000 VA		19999 VA	20000 VA		25000 VA	30000 VA
Peak EPS output power	2 times of rated power, 10 s
Switchover time	< 10 ms

ENVIRONMENT LIMIT	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Ingress protection	IP66
Operating ambient temperature range③	-35 ~ 60°C
Max. operating altitude	3000 m
Relative humidity	0 ~ 100% RH (condensing)
Overvoltage category	Mains: III, Battery: II, PV: II

GENERAL	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Dimensions (W × H × D)	696 × 526 × 240 mm
Net weight	47 kg
Cooling concept	Smart cooling
Communication interfaces	Meter (RS-485), DI x 2, DO x 1, Modbus
Power consumption (night)	< 5 W
Topology	Non-isolated
Certificates and approvals	VDE4105, G99, AS4777, EN50549, CEI 0-21, IEC61727, PEA/MEA, NRS-097-2-1, RD1699, TOR
AC auxiliary power supply (APS)	Built-in

PROTECTION	X3-ULT-15K	X3-ULT-15KP	X3-ULT-19.9K	X3-ULT-20K	X3-ULT-20KP	X3-ULT-25K	X3-ULT-30K
Protection	Over / under voltage protection, DC reverse-polarity protection, Residual current detection, Over temperature protection, DC isolation protection, Grid monitoring, DC injection monitoring, Back feed current monitoring
Active anti-islanding method	Frequency shift
Surge protection (DC / AC)	DC: Type II, AC: Type II
Arc-fault circuit interrupter (AFCI)	Optional
① The maximum input voltage is the upper limit of the DC voltage. Any higher input DC voltage would probably damage inverter
② Input voltage exceeding the MPPT voltage range may triggers inverter protection
③ Derating above +45°C