LF series-1KW to 12KW Solar off Grid Hybrid Power Inverter Manufacturer

Vevsun Energy, located in Foshan, China, is a high-tech leader in green power solutions, specializing in solar and wind energy for over a decade. With a dedicated R&D team, advanced equipment, and automated production lines, we deliver high-quality OEM and ODM customization services globally.

LF series-1KW to 6KW solar off grid hybrid inverter

LF inverter -- solar off grid pure sine wave low frequency inverter,power from 1KW to 6KW, hybrid with built in MPPT charge controller. It's different design with the high frequency inverter model, this low frequency with big transformer inside, stronger load ability. Similar model LS support split phase 110V/220VAC North American Voltage standard. MPPT current can according to your solar system optional 10A-100A. It can work with different type battery, like lead acid battery, deep cycle battery, LifePo4 lithium battery, etc. Equipped with lithium battery BMS communication function.

Feature

◆ Pure sine wave, toroidal low loss transformer, customizable mode dual output voltage.
◆ Smart LCD show equipment status and parameters.
◆ The adjustable mains charging current range is 0-30A.
◆ Suffer 3 times peak power, ensure the safe and stable operation of the equipment.
◆ Support diesel and gasoline generators, suitable for various power grid.
◆ Suitable for industrial and residential used, wall-mounted design.

Specification

Model: LF/LF-T		15212/24/48	20212/24/48	30224/48	40224/48	50248	60248	70248	80248	10348	12348
Rated Power		1500W	2000W	3000W	4000W	5000W	6000W	7000W	8000W	10KW	12KW
Battery Voltage		12/24/48VDC		24/48VDC		48VDC
Size(LWHmm)		470x300x148			530x335x158				684x430x250
Packing Size(LWHmm)		545x385x223			605x420x233				705x485x315
N.W.(kg)		13.5	18	20	22	24	26	28	47	57	60
G.W.(kg)		15	19.5	21.5	24	26	28	30	54	64	67
Installation Method		Wall-Mounted
Parameter
Input	DC Input Voltage Range	10.5-15VDC（Single battery voltage）
	AC Input Voltage Range	80VAC~133VAC(105VAC)/85VAC~138VAC(110VAC)/90VAC~143VAC(115VAC)/95VAC~148VAC(120VAC) 170VAC~275VAC(220VAC)/180VAC~285VAC(230VAC)/190VAC~295VAC(240VAC)(1000W~7000W ) 87VAC~123VAC(105VAC)/92VAC~128VAC(110VAC)/97VAC~133VAC(115VAC)/102VAC~138VAC(120VAC) 185VAC~255VAC(220VAC)/195VAC~265VAC(230VAC)/205VAC~275VAC(240VAC)(8KW~12KW)
	AC Input Frequency Range	45Hz~55Hz(50Hz) / 55Hz~65Hz(60Hz)
	Max AC charging current	0~30A(Depends on model)
	AC charging method	Three-stage (constant current, constant voltage, floating charge)
Output	Efficiency(Battery Mode)	≥85%
	Output Voltage(Battery Mode)	AC105V~120V model: 105VAC±2%/110VAC±2%/115VAC±2%/120VAC±2%(can be set) AC220V~240V model: 220VAC±2%/230VAC±2%/240VAC±2%(can be set)
	Output Frequency(Battery Mode)	50/60Hz±1%(can be set)
	Output Wave(Battery Mode)	Pure Sine Wave
	Efficiency(AC Mode)	≥99%
	Output Voltage(AC Mode)	AC 105V~120V model: 105VAC±10%/110VAC±10%/115VAC±10%/120VAC±10%(can be set) AC 220V~240V model: 220VAC±10%/230VAC±10%/240VAC10%(can be set)
	Output Frequency(AC Mode)	Follow input
	Output waveform distortion (Battery Mode)	≤3%（Linear load）
	No load loss(Battery Mode)	≤1% rated power
	No load loss(AC Mode)	≤2% rated power（ charger does not work in AC mode）
	No load loss (Energy saving Mode)	≤10W
Insidc Solar controller (Optional)	Charging Mode	MPPT
	Charging current	30A~60A			60A~100A				80A~100A
	PV Array Maximum Power	12V system: 420W(30A)/560W(40A)/ 700W(50A)/840W(60A); 24V system: 840W(30A)/1120W(40A)/ 1400W(50A)/1680W(60A); 48V system : 1680W(30A)/2240W(40A)/ 2800W(50A)/3360W(60A)			24V system : 1680W(60A)/2240W(80A)/2800W(100A); 48V system : 3360W(60A)/4480W(80A)/5600W(100A)				4480W(80A)/5600W(100A)
	Max PV Input Voltage (Voc) (At the lowest temperature)	12V/24V system: 120VDC; 48V system: 180VDC
	MPPT tracking range	12V system: 15V-80V; 24V system: 30V-100V; 48V system : 60V-140V
	Standby loss	≤3W
	Maximum conversion efficiency	＞95%
Battery Type	Custom battcry	Charging and discharging parameters of different types of batteries can be set through the operationpanel by oneself
Protection	Battery lowvoltage alarm	Factory default: Pb:11V/Single battery voltage;LI* : 10% of the battery capacity
	Battery lowvoltage protection	Factory default: Pb:10.5V/Single battery voltage ; LI* :5% of the battery capacity
	Battery overvoltage alarm	Factory default: Pb:15.5V/Single battery voltage;LI* : following BMS instruction
	Battery overvoltage protection	Factory default: Pb:17V/Single battery voltage;LI* : following BMS instruction
	Battery overvoltage recovery voltage	Factory default: Pb:14.5V/Single battery voltage;LI*: following BMS instruction
	Overload power protection	Automatic protection (battery mode), circuit breaker or insurance (AC mode)
	Inverter output short circuit protection	Automatic protection (battery mode), circuit breaker or insurance (AC mode)
	Temperature protection	>90°C（Shut down output）
Alarm	A	Normal working condition, buzzer has no alarm sound
	B	Buzzer sounds 4 times per second when battery failure, voltage abnormality, overload protection
	C	When the machine is turned on for the first time, the buzzer will prompt 5 when the machine is normal
Working Mode		Battery First/AC First/Saving Energy Mode
Transfer Time		≤4ms
Display		LCD
Thermal method		Cooling fan in intelligent control
Communication		RS485/APP(WIFIGPRS data collector)
Environment	Operating temperature	-10℃~40℃
	Storage temperature	-15℃~60℃
	Noise	≤55dB
	Elevation	2000m（More than derating）
	Humidity	0%~95% ,No condensation