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Three-phase hybrid inverter 8-12kW (grid-tied)

Three-phase hybrid inverter 8-12kW (grid-tied)

This product is a three-phase high-voltage hybrid inverter series (ESS1-8K3P-02-HV, ESS1-10K3P-02-HV, ESS1-12K3P-02-HV) designed for commercial and industrial energy storage applications.

With DC input power ranging from 12kW to 18kW, it supports lithium iron phosphate batteries (180-600V) and delivers rated AC output power of 8kW to 12kW.

Key advantages include ultra-fast grid switching (<10ms), high efficiency (up to 98.10%), IP66 protection for harsh environments, natural cooling (low noise/maintenance), and compliance with international safety standards (IEC/EN). It also features RS485/WiFi/GPRS/LAN communication for remote monitoring, making it ideal for scalable, reliable energy storage systems.
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Overview
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Product Description

Three-Phase High-Voltage Hybrid Inverter (8-12kW Series)

The ESS1 three-phase high-voltage hybrid inverter series (8K/10K/12K) represents a premium solution for commercial, industrial, and medium-scale residential energy storage systems, engineered to deliver unrivaled efficiency, reliability, and flexibility in grid-tied, off-grid, and hybrid energy management scenarios. As a critical component of modern energy ecosystems, this inverter bridges solar PV generation, high-voltage battery storage, and grid connectivity, addressing the growing demand for resilient, cost-effective, and sustainable power solutions across diverse applications.

Core Technical Specifications & Performance

The series comprises three models—ESS1-8K3P-02-HV, ESS1-10K3P-02-HV, and ESS1-12K3P-02-HV—each optimized for different power capacities while maintaining consistent core performance benchmarks.

DC Input & Battery Integration:The inverter supports a wide DC input voltage range (600V nominal, 200V startup, 800V maximum), with DC input power ratings of 12kW (8K), 15kW (10K), and 18kW (12K). Equipped with 24 MPPT trackers (maximum MPPT current: 26A/28A for 8K/10K, 36A/38A for 12K), it maximizes solar energy harvesting even under partial shading or fluctuating irradiance, a critical advantage for commercial PV systems with large array sizes. For energy storage, it is exclusively compatible with lithium iron phosphate (LFP) batteries (180-600V voltage range)—a safe, long-lasting, and cost-effective battery chemistry ideal for stationary storage. The maximum charge/discharge power reaches 8kW (8K) to 10kW (10K/12K), with a maximum charge current of 30A, enabling rapid battery charging and ensuring backup power readiness for critical loads. Battery communication is via 485/CAN protocol, enabling real-time monitoring of state of charge (SoC), temperature, and health to extend battery lifespan.

Product Parameters

Three-Phase High-Voltage Hybrid Inverter (8-12kW)

Product Model	ESS1-8K3P-02-HV	ESS1-10K3P-02-HV	ESS1-12K3P-02-HV
DC Input (PV)
Max Input Power	12kW	15kW	18kW
Nominal Input Voltage	600V	600V	600V
Startup Voltage	200V	200V	200V
MPPT Voltage Range	200-800V	200-800V	200-800V
Max Input Current	26A/28A	26A/28A	36A/38A
Number of MPPT Trackers	24	24	24
DC Input/Output (Battery)
Battery Type	Lithium Iron Phosphate	Lithium Iron Phosphate	Lithium Iron Phosphate
Battery Voltage Range	180-600V	180-600V	180-600V
Max Charge/Discharge Power	8kW	10kW	10kW
Max Charge/Discharge Current	30A	30A	30A
Battery Communication Protocol	485/CAN	485/CAN	485/CAN
AC Output
Rated Output Power	8kW	10kW	12kW
Max Output Power	8.8kW	11kW	13.2kW
Rated Output Apparent Power	8.8kVA	11kVA	13.2kVA
Rated Output Current	12.1A	15.2A	18.2A
Max Output Current	13.4A	16.7A	20A
Grid Switching Time	<10ms	<10ms	<10ms
Rated Output Voltage/Frequency	3L/N/PE 380V/400V 50Hz/60Hz	3L/N/PE 380V/400V 50Hz/60Hz	3L/N/PE 380V/400V 50Hz/60Hz
Output Power Factor	0.8 (lagging) - 0.8 (leading)	0.8 (lagging) - 0.8 (leading)	0.8 (lagging) - 0.8 (leading)
Total Harmonic Distortion (Linear Load, Grid-Tied)	<3%	<3%	<3%
Total Harmonic Distortion (Grid-Tied)	<2%	<2%	<2%
AC Input
Rated Input Apparent Power	8.8kVA	11kVA	13.2kVA
Max Input Current	13.4A	16.7A	20A
Rated Input Voltage/Frequency	3L/N/PE 380V/400V 50Hz/60Hz	3L/N/PE 380V/400V 50Hz/60Hz	3L/N/PE 380V/400V 50Hz/60Hz
Efficiency
Maximum Efficiency	98.10%	98.10%	98.10%
Standards
Safety Certification	IEC62109-1/2	IEC62109-1/2	IEC62109-1/2
EMC Compliance	EN61000-6-1/EN61000-6-3	EN61000-6-1/EN61000-6-3	EN61000-6-1/EN61000-6-3
Basic Parameters
Dimensions (W×H×D, mm)	556×482×196	556×482×196	556×482×196
Cooling Method	Natural Cooling	Natural Cooling	Natural Cooling
Weight	27.5kg	27.5kg	27.5kg
Protection Grade	IP66	IP66	IP66
Operating Temperature	-25~60°C (derating above 45°C)	-25~60°C (derating above 45°C)	-25~60°C (derating above 45°C)
Maximum Altitude	3000m	3000m	3000m
Communication Method	RS485/WiFi/GPRS/LAN	RS485/WiFi/GPRS/LAN	RS485/WiFi/GPRS/LAN

AC Output & Grid Compatibility:On the AC side, the inverter operates on a three-phase grid (3L/N/PE 380V/400V, 50Hz/60Hz), delivering rated output power of 8kW (8K), 10kW (10K), and 12kW (12K), with maximum output power of 8.8kW, 11kW, and 13.2kW respectively (10% overload capacity). Rated output apparent power ranges from 8.8kVA to 13.2kVA, with rated output current of 12.1A (8K) to 18.2A (12K) and maximum output current of 13.4A to 20A, ensuring stable power delivery to heavy commercial/industrial loads (e.g., machinery, lighting, HVAC systems). A standout feature is its ultra-fast grid switching time (<10ms), enabling seamless transition between grid-tied and off-grid modes to guarantee uninterrupted power for critical equipment during grid outages—a critical requirement for businesses where downtime translates to financial losses.

Efficiency & Power Quality:The inverter achieves a maximum efficiency of 98.10%, among the highest in its class, minimizing energy loss during DC-AC conversion and directly improving the return on investment (ROI) of energy storage systems. It also meets strict power quality standards: total harmonic distortion (THD) is <3% for linear loads and <2% for grid-tied operation, ensuring clean power injection into the grid and compliance with global grid codes (e.g., IEC, EN). The output power factor is adjustable from 0.8 lagging to 0.8 leading, enabling reactive power compensation to optimize grid stability and reduce utility fees.

Key Features & Competitive Advantages

Rugged & Low-Maintenance Design:The inverter uses natural cooling (fanless) technology, eliminating moving parts to reduce noise, maintenance costs, and failure risks—ideal for industrial environments where reliability is paramount. With an IP66 protection rating, it is dust-tight and protected against high-pressure water jets, suitable for outdoor installation in harsh conditions (operating temperature range: -25°C to +60°C, with derating above 45°C to ensure longevity). Its compact dimensions (556mm×482mm×196mm) and lightweight construction (27.5kg) simplify installation, even in space-constrained electrical rooms or containerized energy storage systems.

Comprehensive Safety & Compliance:The inverter adheres to international safety and performance standards, including IEC62109-1/2 (safety for PV inverters) and EN61000-6-1/EN61000-6-3 (EMC compliance), ensuring global market access and peace of mind for users. It integrates multiple protection mechanisms: overvoltage/undervoltage protection, overcurrent/short-circuit protection, overheating protection, and insulation monitoring, safeguarding both the inverter and connected equipment from damage.

Scalable & Versatile Operation:While optimized for three-phase commercial/industrial use, the inverter’s modular design supports system scalability—multiple units can be paralleled to meet higher power demands (e.g., 10×12kW units for a 120kW system). It is compatible with generator input, making it suitable for off-grid or remote industrial sites (e.g., mining, agriculture, telecom towers) where grid access is limited or unreliable.

Intelligent Monitoring & Control:Equipped with RS485, WiFi, GPRS, and LAN communication interfaces, the inverter integrates seamlessly with energy management systems (EMS) and building management systems (BMS). Users can remotely monitor key parameters (input/output power, battery SoC, efficiency, temperature), adjust operating modes (e.g., peak shaving, load shifting), and perform predictive maintenance—maximizing system uptime and reducing operational costs.

Application Scenarios

This three-phase high-voltage inverter is ideally suited for:

Commercial Buildings: Offices, retail spaces, and hotels seeking to reduce grid reliance, lower energy costs via peak shaving, and ensure backup power for critical systems (e.g., POS terminals, security, lighting).

Light Industrial Facilities: Small manufacturing plants, warehouses, and workshops requiring stable power for machinery and reducing downtime during grid outages.

Agricultural Applications: Irrigation systems, greenhouses, and rural processing facilities, where reliable power is essential for productivity and grid access is often inconsistent.

Hybrid Microgrids: Remote communities, telecom towers, and off-grid industrial sites, combining solar PV, battery storage, and generators for self-sustaining power systems.

Conclusion

The ESS1 8-12kW three-phase high-voltage hybrid inverter is a testament to cutting-edge energy storage technology, combining high efficiency, ultra-fast grid response, rugged durability, and intelligent control to meet the demands of modern commercial and industrial energy systems. Its compatibility with LFP batteries, compliance with global standards, and low-maintenance design make it a cost-effective, future-proof solution for businesses looking to optimize energy usage, enhance power resilience, and transition to a more sustainable energy model. Whether for grid-tied peak shaving, backup power, or off-grid microgrid applications, this inverter delivers consistent, reliable performance while adapting to the evolving needs of the energy landscape.