SPT Series 15–25kW On-Grid PV Inverter

Additional Information

Product Model	SPT15KTL	SPT17KTL	SPT20KTL	SPT22KTL	SPT25KTL
DC Input
Maximum DC Input Voltage	1,100VDC
Maximum DC Input Power	18,000W	20,000W	23,000W	25,000W	28,000W
Rated DC Input Voltage	650VDC
MPPT Operating Voltage Range	180–1,000VDC
MPPT Voltage Range (Full Load)	480V–850V
Maximum Input Current of MPPT	15A*2
PV Short-circuit Current	36A
MPPT Number	2
Maximum Number of PV Strings per MPPT	2/2
AC output
Rated AC Output Power	15,000W	17,000W	20,000W	22,000W	25,000W
Maximum AC Apparent Power	16,500VA	18,800VA	22,000VA	24,000VA	27,500VA
Rated AC Output Voltage	380VAC/400VAC
Rated AC Output Frequency	50Hz/60Hz
Maximum AC Output Current	25.1A	28.4A	33.4A	36.8A	41.8A
Power Factor	1
THDi (Total Harmonic Current Distortion)	＜3%
AC Grid Connection Type	3W+N+PE
Efficiency
Maximum Efficiency	98.60%	98.75%	98.75%	98.75%	98.75%
China Effciency	98.20%	98.60%	98.60%	98.60%	98.60%
MPPT Effciency	99.90%
Others
DC Input Connector	H4/MC4 (Optional)
AC Output Connector	Connector
Cooling Method	Natural cooling		Intelligent fan cooling
Display	LED/WIFI+APP
Self-consumption at Night	＜1W
Communication Port	USB/RS485(included), WIFI/GPRS(Optional)
Mechanical parameters
Dimension (LengthWidthHeight)	520mm430mm210mm
Net Weight (kg)	24.5		25
Environment Parameters
Relative Humidity	0–100%, no condensation
Enclosure	IP65
Operating Temperature Range	-30℃ ~ +60℃
Altitude	≤ 4,000m
Pollution Level	Ⅲ
Surge Protection Level	DCⅡ/AC Ⅲ

Downloads

Manual

SPT15-25KTL-Manual-EN-V1.1

Download File

Datasheet

SPT15-25KTL-DataSheet-EN

Download File

Highlights

Product Highlights

High power density and long life components, stable and reliable.

IP65 Protection, supporting outdoor installation.

Dual MPPT inputs, maximum 150% DC input oversizing.

Maximum DC input voltage of 1,100VDC, maximum string input current of 15A.

Support 110% long term overload.

Optional GPRS and WiFi modules for remote monitoring.

DC Type II & AC Type SPD to prevent lightning damage.

Support anti-backflow function(optional).

Description

The SPT Series (15–25kW) is a high-performance, three-phase solar inverter designed for medium-scale commercial and industrial PV systems. Built for on-grid applications, it offers exceptional energy efficiency, intelligent MPPT control, and long-lasting durability, making it perfect for medium-sized solar installations.

Equipped with dual MPPT trackers, the SPT Series maximizes energy harvest from your solar array—even in partially shaded conditions. Its wide MPPT voltage range (480–850V) and high input voltage (1,100VDC) provide flexibility in system design and allow for oversizing up to 150%. With a peak efficiency of 98.75%, the inverter reduces energy loss and enhances your return on investment.

Housed in a rugged IP65-rated enclosure, the SPT inverter is suitable for outdoor installations and operates in extreme conditions, from -30°C to +60°C. It also features built-in USB/RS485 communication and optional WiFi/GPRS modules, enabling seamless remote monitoring and management via a mobile app or PC.

Whether you’re powering a commercial rooftop, industrial facility, or distributed solar plant, the SPT Series combines advanced technology with robust design to ensure long-term performance, reliability, and energy savings.

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Rated AC Output Voltage (On-grid)
Rated AC Output Power (On-grid)
Max PV input power
Max PV Input Voltage
MPPT Voltage Range
Max Input Current

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