UD3824 3000W Off-Grid Low-Frequency Solar Inverter | High Surge Capacity MPPT Inverter

The UD3824 3000W Low-Frequency Solar Inverter provides stable and continuous off-grid power for residential, marine, and industrial equipment. It features pure sine wave output, transformer-based design, and MPPT solar charging efficiency up to 98%, delivering reliable AC power even under high surge conditions.

It supports lithium battery wake-up, BMS protocol, adjustable grid start voltage, generator auto-start, and multiple communication options, ideal for high-power loads including water pumps, drills, AC units, and heaters.

Key Features

Pure sine wave output
High-efficiency MPPT (up to 98%)
Generator auto-start support
Adjustable charging current & grid start voltage
Low-frequency ring transformer
Lithium battery wake-up & auto-restart
BMS protocol compatible
DC start & automatic self-diagnosis
Overload protection
Lead-acid and lithium battery models
Sustained high-power output for inductive loads

Applications

Residential off-grid solar systems
Marine/boat power
Small industrial workshops
High surge and inductive load applications

Model	UD3824
Input voltage	220V AC/110V AC
Input voltage range	220V:154-264V±3V AC(Normal Mode) 185V-264V±3V AC(UPS Model) 110V:77-132V±3V AC(Normal Mode) 92V-132V±3V AC(UPS Model)
Input Frequency	50/60Hz±5%
Out put power	3800VA 2400W
AC model output Voltage	The output voltage under the mains is thesame as the input voltage
AC model outout frequency	The output frequency under the mains is the same asthe inputfrequency
Battery model output voltage	220V AV +10%
Battery model output frequency	50Hz or 60Hz+1%
Battery model output wave	Pure sine wave
Battery type	External lead-acid battery,Gel battery.water battery or Lithium battery
Battery voltage	24V DC
Battery charging voltage	27.4V DC
Maximum PV array power	24V:1600W
Solar input voltage range	12V:PWM 15V-50V DC 24V:PWM 30V-105V DC
Maximum PV Display open Circuit Voltage	12V:PWM 5OV DC 24V: PWM 105V DC
Maximum solar charging current	60A
Maximum AC Charge Current	60A
Transfer time	s10ms(UPS)/s20ms(INV)
load peak ratio	(MAX)3:1
Operating temperature	0°C~40°C
Relative temperature	-10°C~90°C no condensation
Noise	<45db

Power Frequency Toroidal Transformer Design

Innovative design in the inverter industry featuring a power frequency toroidal transformer
Parallel expansion capability with low no-load loss, less than half of the high-frequency inverter of the same power
Strong anti-interference ability and large overload capacity

Wide Application

Continuous High-Power Output: Guarantees reliable performance for all your devices.
Broad Compatibility: Works with a wide range of appliances, including air conditioners, water heaters, rice cookers, lighting, and electric kettles.
Essential Home Power: Ideal for ensuring the smooth operation of your devices in any environment.

Lithium Battery Wake-up Function

Automatic Lithium Battery Start-up: Powers on seamlessly from the battery.
Smart & Safe Charging: Designed for safety and peace of mind.
Zero Activation Required: Fully operational for immediate use after charging.
Hands-Off Recovery: Automatically detects power restoration, charges, and reboots.

Color Display | Clear & Easy to Read

Real-Time Monitoring: Track actual load power instantly.
User-Centric Design: Greatly enhanced readability and ease of use.