Off-Grid Solar Inverter

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This power frequency off-grid solar inverter is the perfect solution for areas where electricity is scarce or unreliable, such as mountain regions, rural areas, military outposts, islands. It takes DC power and converts it to AC power via a full-bridge inverter, and comes in sizes ranging from 5kW to 500kW to fit the power load of any area. Outfitted with a pure sine wave output and advanced protective features, the off-grid solar inverter also boasts a highly efficient performance with a low no-load loss, making it an ideal choice for solar/wind energy and energy storage power station power generation systems.

Our solar inverter is designed with user-friendly features, a sophisticated look and simple operation. The clear LCD display and efficient operation create a low noise and non-polluting power source that is ideal for industrial control systems, in civil, train, marine and automotive applications, as well as fire power and other power management systems. The pure sine wave AC output is also suitable for other scenarios requiring rock-solid AC voltage transfers. With its careful design and construction, our product delivers convenient and reliable power control solutions and meets the highest quality and security requirements of power control systems, while also delivering a dependable and effective power supply for the connected terminals.

Features

Our solar inverter features the 6th generation IPM module from Mitsubishi, which ensures stable performance, long service life and enhanced protection. Additionally, replacing or maintaining the device is conveniently easy. It is also powered by an American TI central processing unit chip, the DSP28335, which offers quick, precise responses and a dependable and clean power supply.

Using modular design and a straightforward set-up, this full-bridge inverter reduces the need for frequent maintenance as well as the associated costs of repairs for any malfunctions. The convenience of its plug-in design makes it even more straightforward to tend to any potential issues.

Make adjustments to the system's operation according to the product arrangements: choose either inverter priority or mains bypass priority.

For users looking to save on costs, use the LCD touch screen to select between step-down start and variable frequency start. This allows the solar inverter to reach its full capacity, eliminating the need for additional components when dealing with motors and inductive loads.

With the inverter's adjustable output frequency feature, you can easily set your motor's speed to the exact rate you need. This convenient function allows you to easily adjust the motor to different load types and customise your speed according to your preferences.

The LCD screen makes it easy to customize your DC voltage range with an adjustable overvoltage point, undervoltage point, overvoltage recovery point and undervoltage recovery point. Furthermore, this feature provides you with flexibility in adding or subtracting storage batteries and photovoltaic modules.

This inverter offers the ultimate in output protection, including safeguards against output overvoltage, overload, overtemperature, short circuits, and self-diagnostic protection.

Designed with safety in mind; the input and output are fully isolated by an isolation transformer, allowing for easy and safe installation with the help of molded case circuit breakers and saving switches. At the same time, any live parts are enclosed securely to prevent electric shock.

This combined LCD and LED display allows users to view their input and output voltages, current, power consumption and fault codes, making it easy and convenient to detect and diagnose faults as well as guide maintenance operations.

The SVPWM space vector algorithm is employed, resulting in a high conversion efficiency of more than 93%, instantaneous power that is maximized, and minimized no-load loss.

Allows customers to customize voltage input according to their specific requirements. Compatible with a range of voltages from 100-400V, 200-500V, 300-600V or 450-850VDC, the product is an ideal solution for powering solar/wind energy systems without energy storage batteries – it directly connects the DC input to the solar panel/wind generator. Also, the online switching time is an astonishing 0 seconds.

This inverter has been certified to the European CE (EMC and LVD) and ISO9001 standards of quality management.

Technical Parameters

Model	SDP-5kW		SDP-6kW
Isolation mode	Low frequency transformer
DC Input
Rated voltage	192V	240V	192V		240V
Rated current	26A	21A	31A		25A
Input voltage	173~300V	216~340V	173~300V		108~340V
AC Output
Rated power	5kW		6kW
Rated voltage	220V±3%	380V	220V		380VAC
Frequency	50H/60HZ±0.05 (programmable)
Rated current	23A	7.5A	27A		9A
Phases	Single phase two wire grounding	3 phase 4 wire grounding	Single phase two wire grounding		3 phase 4 wire grounding
Output waveform	Pure sine wave
Total harmonic distortion (THD)	≤3% (linear load)
Dynamic response (0 to 100% load)	5%, ≤50ms
Power factor (PF)	0.99
Inverting efficiency	＞93%
Overload capacity	150%, 10sec
Electrical insulation (input and output)	1500Vac, 1min
Protection
Protection function	Input reverse polarity, under voltage, overvoltage, output over-current, short circuit, overheating
Display	LCD LED
Communication (optional)	RS485 (A, B)
Operation	Continuous operation
Cooling	Cooling fan
Short-circuit protection/overload protection	No automatic recovery, need to restart
Working Environment & Dimensions
Environment protection rating	IP20 (indoor)
Operating altitude	≤3000m (derating to operate at a height exceeding 1000m)
Operating temperature	-15℃～ 50℃
Relative humidity	0~95% no condensation
Noise (1 meter)	≤50dB
Dimensions (W×D×H)	550×450×760mm
Weight	70kg			80kg

Model	SDP-8kW		SDP-10kW
Isolation mode	Low frequency transformer
DC Input
Rated voltage	120V	192V	192V		240V
Rated current	67A	42A	52A		42A
Input voltage	108~175V	172~275V	172~275V		216~340V
AC Output
Rated power	8kW		10kW
Rated voltage	220V±3%	380V	220V		380VAC
Frequency	50H/60HZ±0.05 (programmable)
Rated current	36A	12A	45.5A		15A
Phases	Single phase two wire grounding	3 phase 4 wire grounding	Single phase two wire grounding		3 phase 4 wire grounding
Output waveform	Pure sine wave
Total harmonic distortion (THD)	≤3% (linear load)
Dynamic response (0 to 100% load)	5%, ≤50ms
Power factor (PF)	0.99
Inverting efficiency	＞93%
Overload capacity	150%, 10sec
Electrical insulation (input and output)	1500Vac, 1min
Protection
Protection function	Input reverse polarity, under voltage, overvoltage, output over-current, short circuit, overheating
Display	LCD LED
Communication (optional)	RS485 (A, B)
Operation	Continuous operation
Cooling	Cooling fan
Short-circuit protection/overload protection	No automatic recovery, need to restart
Working Environment & Dimensions
Environment protection rating	IP20 (indoor)
Operating altitude	≤3000m (derating to operate at a height exceeding 1000m)
Operating temperature	-15℃～ 50℃
Relative humidity	0~95% no condensation
Noise (1 meter)	≤50dB
Dimensions (W×D×H)	550×550×860mm
Weight	105kg			110kg

Model	SDP-15kW		SDP-20kW
Isolation mode	Low frequency transformer
DC Input
Rated voltage	192V	240V	192V		240V
Rated current	78A	62.5A	104A		83A
Input voltage	172~275V	216~340V	172~275V		216~340V
AC Output
Rated power	15kW		20kW
Rated voltage	220V±3%	380V	220V		380VAC
Frequency	50H/60HZ±0.05 (programmable)
Rated current	68A	23A	91A		30A
Phases	Single phase two wire grounding	3 phase 4 wire grounding	Single phase two wire grounding		3 phase 4 wire grounding
Output waveform	Pure sine wave
Total harmonic distortion (THD)	≤3% (linear load)
Dynamic response (0 to 100% load)	5%, ≤50ms
Power factor (PF)	0.99
Inverting efficiency	＞93%
Overload capacity	150%, 10sec
Electrical insulation (input and output)	1500Vac, 1min
Protection
Protection function	Input reverse polarity, under voltage, overvoltage, output over-current, short circuit, overheating
Display	LCD LED
Communication (optional)	RS485 (A, B)
Operation	Continuous operation
Cooling	Cooling fan
Short-circuit protection/overload protection	No automatic recovery, need to restart
Working Environment & Dimensions
Environment protection rating	IP20 (indoor)
Operating altitude	≤3000m (derating to operate at a height exceeding 1000m)
Operating temperature	-15℃～ 50℃
Relative humidity	0~95% no condensation
Noise (1 meter)	≤50dB
Dimensions (W×D×H)	550×550×860mm
Weight	145kg			170kg