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Single-phase hybrid inverter 3-6kW (grid-connected)

Single-phase hybrid inverter 3-6kW (grid-connected)

This product is a single-phase hybrid grid-tied inverter series (3-6kW) designed for residential and small commercial energy storage systems.

It features a maximum battery charging current of 120A, supports up to 16 units in parallel operation, and integrates MPPT (15A) for high-power PV modules.

Key advantages include seamless UPS switching for backup power, compatibility with both lead-acid and lithium batteries, fanless natural cooling for low noise, and support for generator/motor connection.

With a compact design and IP65 protection, it delivers reliable performance across voltage ranges (95-450V DC input, 220/230V AC output) and operates in harsh environments (-25°C to +60°C).
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Overview
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Product Description

Three-Phase PV Inverter 80-110K Series: Redefining Solar Energy Conversion Efficiency and Reliability

In an era where the global transition to renewable energy is accelerating, the performance of photovoltaic (PV) inverters has become a cornerstone of solar system profitability and sustainability. The Three-Phase PV Inverter 80-110K Series emerges as a state-of-the-art solution engineered to meet the rigorous demands of commercial and utility-scale solar installations, combining industry-leading efficiency, intelligent design, and robust durability to maximize energy yield and minimize operational costs.

Core Performance Advantages

At the heart of this inverter series lies a suite of features that set it apart in the competitive PV landscape. Its 98.7% maximum efficiency and 98.1% European efficiency are achieved through advanced MPPT (Maximum Power Point Tracking) technology, which includes 8 MPPT inputs per unit and a wide MPPT voltage range of 200V–1000V. This ensures that the inverter can capture and convert more solar energy even when panels are partially shaded or operating under varying irradiance conditions, directly boosting the annual energy output of the solar system. The ultra-low startup voltage (as low as 80V) further extends energy harvesting time by enabling operation during early morning, late evening, and overcast days, when many competing inverters would remain idle.

Another key strength is its flexible DC input design, which supports 1.5x DC oversizing and compatibility with 20A high-current PV modules. This allows system designers to install more PV panels than the inverter’s rated AC output, increasing energy capture during peak sunlight hours and improving the return on investment (ROI) of the solar project. The optional intelligent DC string current detection feature adds a layer of diagnostic capability, enabling real-time monitoring of each string’s performance to quickly identify faults, reduce maintenance time, and ensure optimal system health.

The inverter also excels in grid compatibility and resilience. It features low-voltage ride-through (LVRT) capability, which allows it to remain connected to the grid during voltage sags, complying with strict grid codes worldwide and contributing to grid stability. Multiple operating modes—including P-F (power-factor regulation), P-V (voltage-dependent active power control), and Q-V (reactive power compensation)—provide system operators with granular control over power injection, enabling them to participate in grid ancillary services and maximize revenue streams. For applications requiring backup power, the inverter can be integrated with energy storage systems to provide seamless transition between grid-tied and off-grid operation, ensuring uninterrupted power supply for critical loads.

Product Parameters

[SOI] Single-Phase Hybrid Inverter 3-6kW (Grid-Tied)

Key Features:
• Max 120A battery charge current
• Max 16 units parallel
• MPPT 15A, high power components
• Short UPS off-grid/on-grid switching time for heavy loads
• Support generator and motor load connection
• Fanless natural heat dissipation

Product Model Specifications
Parameter	ESSI-3KIP-42-LV	ESSI-5KIP-48-LV	ESSI-6KIP-48-LV
DC Input (V)	-	-	-
Max PV Input Power	5kW	8kW	8kW
Max PV Voltage	-	800V	800V
Rated PV Voltage	360V	360V	360V
MPPT Voltage Range	95-450V	125-450V	125-450V
Max Input Current per MPPT	15A/MPPT	22.5A/MPPT	22.5A/MPPT
Max Parallel MPPT Trackers	2	2	2
Battery Charge/Discharge (V)	Lead-acid/Lithium	Lead-acid/Lithium	Lead-acid/Lithium
Battery Type	48V	48V	48V
Max Charging Power	3kW	5kW	6kW
Max Charging Current	70A	120A	120A
Communication Mode	RS485/CAN	RS485/CAN	RS485/CAN
Rated Output Power	3kW	5kW	6kW
Max Output Power	3.3kW	5.5kW	6.6kW
Max Surge Power	3.3kW	5.5kW	6.6kW
Rated Output Current	13.6A	22.7A	27.3A
Max Output Current	15A	25A	30A
Output Frequency	L/N/PE 220/230V 50Hz/60Hz	L/N/PE 220/230V 50Hz/60Hz	L/N/PE 220/230V 50Hz/60Hz
Output Power Factor	0.8 (lagging) - 0.8 (leading)	0.8 (lagging) - 0.8 (leading)	0.8 (lagging) - 0.8 (leading)
THD (Linear Load)	<3%	<3%	<3%
THD (Grid-Tied)	<2%	<2%	<2%
Rated Input Power	3.3kVA	5.5kVA	6.6kVA
Max Input Current	15A	25A	30A
Input Voltage Range	L/N/PE 220/230V 50Hz/60Hz	L/N/PE 220/230V 50Hz/60Hz	L/N/PE 220/230V 50Hz/60Hz
Max Efficiency	97.50%	97.50%	97.50%
Certification	IECEE/IEC61000-6-3	IECEE/IEC61000-6-3	IECEE/IEC61000-6-3
EMC	EN61000-6-1/EN61000-6-3	EN61000-6-1/EN61000-6-3	EN61000-6-1/EN61000-6-3
Dimensions (W×H×D)	390mm×445mm×225mm	390mm×445mm×225mm	390mm×445mm×225mm
Cooling Method	Natural Cooling	Natural Cooling	Natural Cooling
Weight	21kg	21kg	21kg
Protection Class	IP65	IP65	IP65
Operating Temperature	-25~+60℃ (derating at 45℃)	-25~+60℃ (derating at 45℃)	-25~+60℃ (derating at 45℃)
Max Altitude	3000m	3000m	3000m
Communication Interface	RS485/WiFi/GPRS/LAN	RS485/WiFi/GPRS/LAN	RS485/WiFi/GPRS/LAN

Technical Specifications and Model Variants

The 80-110K series comprises three models—TSI-80K3P-03-CN, TSI-100K3P-03-CN, and TSI-110K3P-03-CN—each optimized for different power capacities while maintaining consistent core performance standards.

DC and AC Parameters

The maximum DC input power ranges from 120kW (80K model) to 165kW (110K model), with a maximum input current of 50A per MPPT channel. Each model features 8 MPPT inputs, allowing for flexible string configuration and better shading tolerance. On the AC side, the rated output power spans from 80kW to 110kW, with a maximum apparent power of up to 121kVA, providing a 10% overload capacity to handle short-term peak loads. The output voltage is configurable from 300V to 480V, with a grid frequency of 50Hz or 60Hz, ensuring compatibility with global grid standards. Critical power quality metrics are exceptional: total current harmonic distortion (THD) is less than 3%, and the power factor can be adjusted between -0.9 (capacitive) and 0.9 (inductive), minimizing grid pollution and ensuring compliance with strict utility requirements.

Safety and Durability

Safety is a top priority in the design of the 80-110K series. It incorporates a comprehensive suite of protection features, including DC reverse polarity protection, overvoltage/undervoltage protection, overcurrent protection, insulation resistance monitoring, and residual current detection (RCD). The IP66 protection rating ensures resistance to dust and water ingress, making it suitable for outdoor installation in harsh environments, from deserts to coastal areas. The inverter’s rugged construction and wide operating temperature range (-30°C to 60°C) further enhance its durability, ensuring reliable performance even in extreme weather conditions. Smart fan cooling with a dust filter ensures efficient heat dissipation while extending the lifespan of internal components, reducing long-term maintenance costs.

Physical and Communication Features

Single-phase hybrid inverter 3-6kW (grid-connected)

The inverter’s compact design optimizes installation flexibility: the 80K and 100K models measure 1200mm×535mm×275mm, while the 110K model is 1200mm×600mm×275mm, with weights ranging from 65kg to 82kg. This allows for easy mounting on walls or concrete pads, even in space-constrained sites. For communication and remote management, the inverter supports RS485 and 4G/Wi-Fi connectivity, enabling real-time monitoring of key parameters (e.g., input/output power, efficiency, temperature) and remote firmware updates. This connectivity integrates seamlessly with solar energy management systems (EMS), providing system operators with actionable insights to optimize performance and minimize downtime.

Application Scenarios

The versatility of the 80-110K series makes it ideal for a wide range of applications:

Commercial and Industrial Solar Systems:Powering factories, warehouses, and office buildings to reduce electricity costs and meet sustainability goals.

Utility-Scale Solar Farms: Delivering high-efficiency conversion for large-scale solar installations, maximizing energy yield and grid stability.

Hybrid Solar-Storage Systems: Integrating with lithium-ion batteries to provide backup power and peak shaving, enhancing the reliability and value of solar energy.

Agricultural and Rural Electrification: Providing reliable power for irrigation systems, rural communities, and off-grid farms, where grid access is limited.

In conclusion, the Three-Phase PV Inverter 80-110K Series represents a significant advancement in PV inverter technology, combining high efficiency, intelligent design, and robust durability to meet the evolving needs of the global solar industry. Its ability to maximize energy yield, ensure grid compatibility, and operate reliably in harsh environments makes it a trusted choice for solar project developers, system integrators, and end-users alike. As the world transitions to a low-carbon future, the 80-110K series stands at the forefront of enabling a more sustainable and resilient energy ecosystem.