High-capacity 15kW 3-phase On-grid inverter with dual MPPT trackers, 98% efficiency, and IP65 protection for commercial and industrial solar applications.
Designed for heavy-duty performance, the Okaya Solar GTI 15kW P3 supports up to 18kW peak DC input and dual MPPT tracking for optimal power generation. Operating across 150–1000V, it delivers 98% efficiency and is safeguarded with integrated anti-islanding, surge, and residual current monitoring. The unit’s rugged build is IP65 rated for outdoor installation. A bright LED interface ensures clear visibility of system metrics. BIS & IEC certified, this inverter offers unmatched reliability with a 10-year standard warranty for large-scale solar projects.
• Up to 98% Efficiency - Generates more energy from the same sunlight—maximizing ROI.
• Wide MPPT Voltage Range - Starts efficiently even in low sunlight or varied weather.
• 120% DC Input Overload & 1100V DC Input Support - Enables greater panel input flexibility and longer string designs.
• Smart String-Level Monitoring - Tracks the performance of individual strings for faster diagnostics.
• Fanless Natural Cooling Design - Silent operation makes it perfect for noise-sensitive environments.
• Dual MPPT Technology - Ideal for installations with different orientations or shading.
• Rated AC output power: 15 kW (three-phase)
• Max. peak DC input power: 18 kW
• Max. DC input voltage: 1000 V
• MPPT architecture: 2 MPPT trackers (strings per MPPT: 2)
• MPPT tracking voltage range: 150 – 1000 V
• Min. start voltage: 150 / 180 V
• Max. MPPT input current: 26 A
• MPPT short-circuit current: 40 A
• Rated grid voltage: 380 / 400 / 415 V (operating window 300 V – 500 V)
• Max. AC output current: 21.7 A
• AC connection: 3P + N + E (plug-in connector)
• Max. conversion efficiency: 98%
• Protections integrated: anti-islanding, insulation resistance detection, residual current monitoring, over-voltage protection, surge protection
• DC switch: Optional
• Cooling: Natural convection + smart fan cooling for stable operation
• Communication & monitoring: Wi-Fi / GPRS / RS-485 (for remote monitoring & SCADA integration)
• DC connection type: MC-4
• Display: LED with LCD display for local status and diagnostics
• Noise emission: < 30 dB (quiet operation)
• Protection class / Outdoor rating: IP65 (dust-tight, water-resistant)
• Operating ambient temperature: −25 °C to +60 °C
• Relative humidity: 0% – 100%
• Max. operating altitude: 2000 m (derating above 2000 m)
• Night standby power consumption: < 1 W
• Dimensions (W×H×D): 425 × 351 × 200 mm
• Weight: 20 kg (±200 g)
• Standard warranty: 10 years
• Certifications: BIS; IEC 62109-1/2; IEC 61727; IEC 61683; IEC 60068; IEC 62116; IEC 61000 EMC
Yes. A 16kW solar array is beyond the 12kW maximum DC input supported by the 10KW inverter and would result in significant power clipping. This 15KW inverter accepts up to 18kW of DC input, making it the appropriate choice for commercial installations with arrays in the 15–16kW range while providing better utilization of your solar generation.
The inverter features two MPPT trackers, with each tracker supporting two independent solar strings. This gives installers greater flexibility when designing larger solar systems, allowing panel strings to be distributed across different roof sections, orientations, or mounting structures while still optimizing energy generation from each MPPT independently.
Yes. At approximately 20 kg, this inverter is heavier than the 8KW and 10KW three-phase models. Your installer should verify that the wall, mounting frame, or support structure is designed to safely carry the additional weight before installation. Proper mounting ensures long-term safety and reliable operation.
Possibly. The inverter has a maximum AC output current of 21.7A, which is significantly higher than lower-capacity models. Before installation, your electrician should confirm that the site's AC cabling, circuit breakers, isolators, distribution panels, and transformer capacity (where applicable) are correctly rated to support this output safely and comply with local electrical standards.
The inverter incorporates multiple built-in protection features, including anti-islanding protection, insulation resistance monitoring, residual current detection, over-voltage protection, and surge protection. These systems work together to maintain safe and stable operation under changing grid conditions and varying load demands while protecting both the inverter and the connected electrical infrastructure.
No. The 15KW Solar GTI inverter carries the same 10-year (120-month) standard warranty as every other inverter in Okaya's Solar GTI range, from the 3KW single-phase residential models through to this high-capacity commercial three-phase inverter.
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OKAYA POWER PVT. LTD.
ENERGIS D-7, 3rd & 4th Floor, Rohtak Rd,
Udyog Nagar, Mangolpuri,
New Delhi - 110041, INDIA
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