Description
Eastman 3.2kW Inverter Overview
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3.2kW Pure Sine Wave Output: Delivers clean, stable power suitable for sensitive electronics, appliances, and motor loads .
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Hybrid Operation: Works with or without batteries, offering flexibility for various installation types and budget constraints .
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Wide PV Input Range: Accepts 120V-430V DC solar input, providing compatibility with various solar panel configurations .
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High PV Input Current: 27A maximum PV input current enables connection of higher-power solar arrays .
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Parallel Capability: Supports up to 6 units in parallel (with 5kW model sharing same housing), allowing system expansion to 19.2kW .
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User-Adjustable Charging: Multiple charging modes (Solar Only, Mains Only, Solar Priority, Mains Priority) optimize energy usage based on your preferences .
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Intelligent Display: Large LCD screen provides real-time system status including PV input, battery voltage, load power, and fault indicators .
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Comprehensive Protection: Built-in protections against overload, short circuit, over-temperature, and reverse polarity .
Eastman 3.2kW Inverter Technical Specifications
| Specification | Value |
|---|---|
| Model | Eastman 3.2kW Inverter |
| Rated Power | 3.2kW (3200W) |
| Surge Power | 6400VA (5 seconds) |
| Output Waveform | Pure Sine Wave |
| Output Voltage | 230V AC ±5% |
| Output Frequency | 50Hz / 60Hz (selectable) |
| Transfer Time | <10ms (typical) |
| PV Input Voltage Range | 120V DC – 430V DC |
| Maximum PV Input Current | 27A |
| Maximum PV Array Power | 4500W |
| MPPT Range | 120V DC – 430V DC |
| Battery Voltage | 24V DC |
| Maximum Charge Current | 60A (adjustable) |
| Maximum AC Charge Current | 40A (grid charging) |
| Parallel Capability | Up to 6 units (with 5kW model) |
| Dimensions (L × W × H) | 130mm × 295mm × 468mm |
| Net Weight | 9 kg |
| Communication | RS485 / Optional Wi-Fi / Optional GPRS |
| Operating Temperature | -10°C to 50°C |
| Cooling | Intelligent variable-speed fan |
| Certifications | CE, RoHS, IEC |
Key Features Explained
3.2kW Pure Sine Wave Output
The Eastman 3.2kW inverter produces clean, stable pure sine wave power that matches or exceeds grid quality . This ensures:
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Safe operation of sensitive electronics and medical equipment
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Proper functioning of induction motors (fridges, pumps, power tools)
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No audible hum in audio equipment or LED lighting
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Efficient operation of all household appliances
Wide PV Input Range (120V-430V)
The 120V-430V DC solar input range provides exceptional flexibility for solar array design :
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Compatible with various panel configurations (6-12 panels typical)
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Higher voltage reduces cable losses and improves efficiency
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MPPT range matches voltage for optimal energy harvesting
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27A maximum input current supports larger solar arrays up to 4500W
Battery-Less Operation
Unlike many inverters requiring batteries to function, the Eastman 3.2kW can operate without batteries :
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Solar powers loads directly during daylight hours
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Excess solar feeds to grid (if grid-tied configuration)
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Reduces upfront system cost for grid-tied homes
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Batteries can be added later when budget allows
Parallel Capability
For growing energy needs, up to 6 units can be paralleled (using the 5kW model variant) :
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Total capacity up to 19.2kW
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Supports single-phase parallel configurations
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Automatic load sharing between units
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Scalable investment—add more inverters as needs grow
Four Charging Modes
User-selectable charging modes optimize energy usage :
| Mode | Priority | Best For |
|---|---|---|
| Solar Only | Solar charges batteries, grid disconnected | Off-grid, no grid available |
| Mains Only | Grid charges batteries, solar disconnected | Utility rate arbitrage, solar maintenance |
| Solar Priority | Solar first, grid as backup | Maximizing solar self-consumption |
| Mains Priority | Grid first, solar as supplement | Preserving battery life, fixed schedules |
Comprehensive Display
The large LCD screen provides at-a-glance system status :
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Solar input voltage and power
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Battery voltage and charge status
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Load power and energy consumption
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Grid status and power flow direction
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Fault codes and warning indicators
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Historical data (cumulative readings)
Applications
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Home Backup Power: Keep essential loads running during grid outages .
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Grid-Tied Solar: Maximize solar self-consumption with or without batteries .
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Off-Grid Systems: Power remote homes, cabins, and workshops .
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Load Shifting: Store solar energy during day for nighttime use .
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Business Backup: Protect computers, servers, and equipment from outages .
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Rural Electrification: Reliable power for areas with unreliable grid supply .
Installation Guidelines
Wiring Recommendations
| Component | Recommended Cable Size |
|---|---|
| Battery Cables | 25mm² – 35mm² (copper) |
| PV Array Cables | 4mm² – 6mm² (depending on distance) |
| AC Input/Output | 2.5mm² – 4mm² |
| Grounding | 6mm² – 10mm² earth wire |
Installation Steps
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Location: Mount in a clean, dry, well-ventilated area away from direct sunlight and moisture. Allow minimum 200mm clearance above and below for airflow .
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Mounting: Secure the inverter to a vertical wall using appropriate fixings for the 9kg weight .
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Battery Connection: Connect battery cables with correct polarity. Tighten terminals securely (8-10 Nm). Install appropriate DC breaker/fuse between battery and inverter .
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PV Connection: Connect solar array to PV input terminals, observing correct polarity. Ensure array voltage stays within 120V-430V range .
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AC Connection: Connect AC input from grid/generator and AC output to loads. Install appropriate AC breakers .
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Grounding: Connect earth ground to the grounding terminal as per local electrical codes .
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Commissioning: Power on following sequence: Connect battery first, then PV (if present), then AC input .
Operation Guide
Front Panel Indicators
| Indicator | Meaning |
|---|---|
| Green LED (On) | Inverter operating normally |
| Yellow LED (Fault) | Warning or fault condition |
| LCD Display | Real-time system parameters |
Setting Charging Mode
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Press and hold “Enter” button for 3 seconds
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Navigate to “Charging Mode” using arrow keys
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Select desired mode (Solar Only, Mains Only, Solar Priority, Mains Priority)
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Press “Enter” to confirm
Parallel Configuration
For multiple units (using 5kW model) :
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Designate one unit as master
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Configure others as slaves via settings menu
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Connect communication cables between units
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Ensure all units have same firmware version
Protection Features
The Eastman 3.2kW inverter includes comprehensive protection :
| Protection | Description |
|---|---|
| Overload Protection | Automatically shuts down if load exceeds rated power |
| Short Circuit Protection | Instant shutdown on output short circuit |
| Over-Temperature Protection | Reduces power or shuts down if internal temperature exceeds safe limits |
| Reverse Polarity Protection | Prevents damage from incorrect battery connection (fuse protected) |
| Low Battery Shutdown | Automatically disconnects load when battery voltage drops too low |
| Over-Voltage Protection | Protects connected equipment from excessive voltage |
| Anti-Islanding | For grid-tie applications, prevents feeding power to grid during outage |
Maintenance
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Visual Inspection: Periodically check all connections for tightness and signs of corrosion.
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Clean Exterior: Wipe enclosure with dry cloth—do not use liquids or solvents.
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Air Vents: Ensure cooling fans and vents remain free of dust and obstructions.
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Firmware: Check with Eastman for any available firmware updates.
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Battery Connections: Inspect battery terminals monthly for tightness.
Technical Comparison: Eastman Inverter Range
| Model | Power | Battery Voltage | Max PV Current | Parallel |
|---|---|---|---|---|
| Eastman 3.2kW | 3200W | 24V | 27A | Yes (up to 6) |
| Eastman 5kW | 5000W | 48V | 27A | Yes (up to 6) |
| Eastman 8kW | 8000W | 48V | 27A | Yes (up to 6) |
Why Choose Eastman 3.2kW?
The Eastman 3.2kW inverter offers the perfect entry point for home energy independence :
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Versatile Operation: Works with or without batteries for maximum flexibility
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Expandable: Parallel capability grows with your energy needs
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High PV Input: 27A and 120V-430V range supports substantial solar arrays
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User-Friendly: Intuitive display and simple mode selection
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Reliable Protection: Comprehensive safeguards for peace of mind
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Value Priced: Affordable entry to quality hybrid inverter technology
Contact Us
Ready to take control of your home energy with the Eastman 3.2kW inverter? Contact our team today for expert advice, pricing, or to discuss your specific requirements.
📞 Call / WhatsApp: 0794485343
📧 Email: info@globussolar.com
🌐 Web: www.globussolar.com






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