Off-grid hybrid inverter, pure sine wave, 60-500V PV, MPPT, Li-activation, battery-less

Price Negotiable
Price: To be negotiated
MOQ: 1 piece
Delivery Time: 30 days
Brand: 1stess
Product Description
Off-Grid Hybrid Inverter with Pure Sine Wave Output
Advanced off-grid hybrid inverter featuring pure sine wave output, wide 60-500V PV input range, built-in MPPT technology, lithium battery activation capability, and battery-less operation for versatile power solutions.
Key Advantages
  • Lithium Battery Activation via PV or Utility - Revives deeply discharged Li-ion batteries, preventing premature disposal and extending battery life
  • Operates Without Battery - Functions grid-connected or directly from PV, reducing initial costs for budget-conscious off-grid installations
  • Pure Sine Wave Output - Delivers clean power for all load types including inductive/capacitive loads, air conditioners, refrigerators, and motors
  • Power Factor 1.0 - Provides full rated power without derating, maximizing real load capacity
  • Wide PV Input Range - 60Vdc to 500Vdc MPPT voltage, compatible with various solar panel configurations
  • High-Current Built-in MPPT - Solar charge current up to 60A-120A with PV-to-inverter efficiency up to 96%
  • Multiple Output Priority Modes - UTL, SOL, SBU, SUB for flexible energy management across different usage scenarios
  • Battery Equalization (EQ) - Optimizes battery bank performance and extends cycle life
  • Detachable Dust Cover - Easy cleaning maintenance, ideal for harsh and dusty environments
  • Optional WiFi Remote Monitoring - Real-time system status monitoring via smartphone or PC
Advanced Features
  • LiFePO₄ Communication via RS485 - Intelligent BMS interaction for safe and efficient charging/discharging
  • Dual-Source Charging - PV + AC grid delivers total charge current up to 60A-120A (model dependent)
  • Wide AC Input Range - 90-280Vac with selectable modes for personal computers (170-280V) or home appliances (90-280V)
  • Fast Transfer Time - 10ms (PC mode) or 20ms (appliance mode) between grid and battery
  • Overload Protection - 10s at 110-140% load, 5s at ≥140% load
  • Wide Operating Temperature - -10°C to +50°C with 5-95% non-condensing humidity tolerance
  • Built-in CC/CV Charging - 3-stage intelligent charge algorithm for both lead-acid and lithium batteries
Primary Functions
  • Automatic energy dispatch among PV, utility, and battery sources
  • Supports both lead-acid and LiFePO₄ battery types
  • Integrated solar charger and AC charger with configurable priority and current limits
  • Surge power up to 2× rated power (e.g., 6.2kW model provides 12.4kVA surge)
  • Dual communication ports: RS232 + RS485 for comprehensive monitoring and external control
Product Specifications
Specification Model 1 Model 2 Model 3
Place of Origin China China China
Mounting Method Wall Bracket Wall Bracket Wall Bracket
Nominal Battery Voltage (V) 24VDC 48VDC 48VDC
Lithium Battery Activation YES (By PV or Utility) YES (By PV or Utility) YES (By PV or Utility)
Nominal Voltage 230VAC 230VAC 230VAC
Lithium Battery Communication YES (RS485) YES (RS485) YES (RS485)
Frequency 50/60Hz 50/60Hz 50/60Hz
Waveform Pure Sine Wave Pure Sine Wave Pure Sine Wave
Solar Charger Type MPPT MPPT MPPT
Communication Interface RS232+RS485 RS232+RS485 RS232+RS485
PV Array MPPT Voltage Range 60VDC~500VDC 60VDC~500VDC 60VDC~500VDC
Surge Power 7000VA 11000VA 1240VA
Size 358*295*100mm 438*295*105mm 438*295*105mm
Weight 7kg 9kg 9kg
Operating Temperature Range -10℃ to 50℃ -10℃ to 50℃ -10℃ to 50℃
Product Images
EM Series Inverter internal components view showing circuit board and electronic assemblies
Internal Components View
EM Series Inverter connection panel with terminal blocks and ports
Connection Panel
EM Series Inverter side view showing enclosure and ventilation
Side View
EM Series Inverter display interface with LCD screen and controls
Display Interface
EM Series Inverter installation diagram showing mounting and wiring
Installation Diagram
EM Series Inverter technical specifications table and ratings
Technical Specifications
EM Series Inverter wiring schematic diagram
Wiring Schematic
EM Series Inverter application examples and use cases
Application Examples

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen First Tech Co., Ltd.
Location 1404-1405A Tower A, Huahai Financial Creative Center,No.5073 Menghai Avenue,Qianhai Shenzhen-Hong Kong Cooperation Zone,Shenzhen,China
Contact Person Jennifer

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