3kVA 4kVA 5kVA Solar Inverter Main Board UPS Power Inverter Drive Circuit Board Bidirectional Inverter

Product Description

3kVA 4kVA 5kVA Solar Inverter Main Board UPS Power Inverter Drive Circuit Board Bidirectional Inverter

UPS-4000W: 4000W/8000W Peak Bi-Directional Pure Sine Wave Inverter Board with UPS Function

Designed for advanced energy solutions, the UPS-4000W is a versatile and intelligent bi-directional inverter PCB that supports both DC-to-AC and AC-to-DC conversion, integrated battery charging, and true uninterruptible power supply (UPS) functionality. Perfect for custom energy storage systems, DIY enthusiasts, RVs, specialty vehicles, and small solar installations.

Specification

Model No.	UPS-4000W
INVERTER MODE (DISCHARGE)
DC Input voltage	24VDC
Battery low voltage protection	20.0±0.5VDC
Battery low voltage recovery	25.2±0.5VDC
Battery high voltage protection	31.6±0.5VDC
Battery high voltage recovery	29±0.5VDC
Continuous power	4000W
AC Output voltage (Battery Mode)	220VAC±15%
Frequency	50HZ/60HZ(Automatic identification)
Wavefrom	Pure Sine Wave
No Load Current	660mA
Total Harmonic Distortion	THD ≤ 3%
Conversion efficiency	92%
Overload protection	>4200W, Shut down the output
Short circuit protection	Supported (Auto-shutdown)
RECTIFICATION MODE(CHARGING)
Rated voltage	220V
AC rated power	480W
UPS switches to mains time	15ms
Power Factor	>0.9
Efficiency(Peak)	≤ 92%
Battery Voltage	24VDC
Float Charging Voltage	28.4VDC
Full Voltage	29.6VDC
Maximum Charging Current	20A
Pre-charging Current	2A
Charging Mode	Constant Current - Constant Voltage - Float Charge
OTHER PARAMETERS
Front and rear isolation	Supported
Reverse connection protection	Supported
On-board MPPT	X
UPS function	Supported
Overheating Protection	Overheat trip at 90° C Recovery at 60° C
Operating temperature	-10℃ to +50℃
Storage temperature	-30℃ to +70℃
Operating humidity	≤ 90℃ Non-freezing
Product Dimensions	380×215×70MM(L×W×H)
Product Weight	4.2KG
Certification	CE/ROHS/ISO9001/ISO14001/ISO45001

Product Description

Features

Bi-Directional Power Conversion
 * DC to AC: Delivers 4000W continuous (8000W peak) pure sine wave AC output.
 * AC to DC: Built-in smart charger with up to 20A max charging current (24V system).
 * Seamlessly switches between grid power and battery mode, making it ideal for backup power and off-grid applications.
 

Multi-Battery Compatibility
 * Supports Lead-Acid, Lithium (LiFePO4), Gel, and Water batteries with automatic voltage recognition (24V/48V DC).
 * Advanced 3-stage charging (Constant Current, Constant Voltage, Float) ensures efficient and safe battery maintenance.
 

Clean & Stable Pure Sine Wave Output
 * THD ≤ 3% – Provides utility-grade power quality, safe for sensitive electronics like laptops, medical devices, and audio
 systems.
 

True UPS Functionality
 * Ultra-fast transfer time: ≤15ms (grid to inverter)
 * Ensures continuous operation for critical loads during power outages.
 

Comprehensive Protection & Safety
 * Full protection: Overload, Short Circuit, Over/Under Voltage, Overheating, Reverse Polarity.
 * Intelligent thermal management: Triple-fan cooling system activates at 45°C.
 * Overheat protection at 90°C with auto-recovery at 60°C.
 

Real-Time Monitoring & Control
 * Optional LCD display and wireless remote control for real-time monitoring of:
 * Input/Output Voltage, Power, Frequency
 * Battery Status, Charging Current, Fault Codes (e.g., Overload, Short Circuit)
 * Clear LED indicators for operational status: Green (normal), Red (fault/charging), Yellow (warning).
 

Compact & DIY-Friendly
 * Dimensions: 380×215×70mm | Weight: 4.2kg
 * Easy integration into custom enclosures or existing systems.
 * Optional accessories: terminal blocks, self-recovering fuses, and a display module.

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