Sun Power Off Grid System 300W Design Backup Time 5-6Hrs

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Item specifice:

Application: Commercial Output Voltage (V): 17.6

Product Description:


Sun power off grid system

Design Backup Time 5-6Hrs

Solar Module

Maximum power at STC(pm)

150W solar panel(polycrystalline) 2pcs 75W,2pcs parallel

Max.system charging voltage


Max.system charging current



Output waveform

Low frequency pure sine wave

Continuous output power


Output voltage/frequency


Charge controller

Syetem voltage


Rated discharge current




Steel box of zinc-plated and laquer-coated



Deep cycle

System voltage



1pcs 12V 100Ah

operating temperature



Solar panel


Control box




Whole system


Daily use reference

Name of load


Working hours























Daily use reference
TV 70W x 4 hours
Lighting 30W x 6 hours
Fan 50W x 6 hours
Laptop 60W x 2 hours
Total loading power: 210W
Total power consumption per day: 880Wh (0.88kWh/day)



AC solar power system consists of solar batteries, solar controller, battery, inverter components.
Used to solve rural or remote areas without electricity, such as highland, island, pastoral, villas, border posts and other military and civilian life electricity.



1.   How do I decide which system is right for me ?

For protection from long outages, include a generator or solar panels in your Must solar system. Shorter outages can be handled by a battery-only system.

2.    Where my system will be installed ?

Must solar systems are usually wall-mounted near a home's main electrical (circuit breaker) panel.

3. How do I install my system ?

A solar backup inverter is connected to a home electric system , we will supply detailed installation manual and videos for our customers .


Sun Power Off Grid System 300W Design Backup Time 5-6Hrs

Sun Power Off Grid System 300W Design Backup Time 5-6Hrs

Sun Power Off Grid System 300W Design Backup Time 5-6Hrs

Sun Power Off Grid System 300W Design Backup Time 5-6Hrs


Sun Power Off Grid System 300W Design Backup Time 5-6Hrs

Sun Power Off Grid System 300W Design Backup Time 5-6Hrs

Sun Power Off Grid System 300W Design Backup Time 5-6Hrs


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Q:What are the main features of solar photovoltaic systems
Compared with the commonly used thermal power generation system, the advantages of photovoltaic power generation:No danger of depletion; safe and reliable, no noise, no pollution, absolutely clean (pollution-free); not subject to geographical distribution of the resources, can take advantage of the building roof; for example, areas without electricity, and complex terrain area; no fuel consumption and the erection of transmission line can be on-site power supply high quality energy;; users emotionally receptive; the construction period is short, get energy to spend a short time.
Q:Solar PV systems
Article 1 in order to regulate the construction of distributed photovoltaic power generation project management, promote distributed photovoltaic applications, according to the "People's Republic of China renewable energy law", "People's Republic of China, People's Republic of China" power law "administrative licensing law", and the "State Council on a number of opinions" to promote the healthy development of the PV industry, these measures are formulated.
Q:How about the price of solar power generation system
Photovoltaic power generation system can not buy cheap, cheap product quality is not good to use expensive. Photovoltaic power generation system can be used to invest in financial products, general household photovoltaic system 7~9 can recover the cost of power system can be used for more than 25 years, 25 years after the power attenuation of about 20%, if the poor quality of the products are generally 2~3 years can be reduced by 20% and must keep their eyes open several more formal manufacturers so when buying light V system, quality quality assurance production factory.
Q:What are the devices needed for PV systems?
Battery pack. The utility model is used for storing the electric energy generated by the solar array when illuminated by the light and can supply power to the load at any time. In the grid connected solar power generation system, the battery can not be added
Q:Solar photovoltaic system
To search and collect profit (in all spontaneous terms): the average recovery of funds on average generating capacity = * (distributed generation electricity subsidies + residential electricity price =200* (0.42+0.55) =194 were the first year of the recovery of funds = daily recovery funds *365=194*365=70810 yuan investment recovery period = total investment / average recovery of funds is about =450000/70810=7.06 years. 6.5 years 25 years average annual net income = recovery funds * (20 -6.5) + daily average generation price *365 * electricity days *5 years =70810*13.5+200*0.55*365*5=1156680 yuan
Q:How to calculate the income of photovoltaic system
Hypothesis: 1 my peak electricity price of 1 yuan / degree, the flat price of $0.7 / degree, the local coal desulfurization unit benchmark price of 0.4 yuan / degree. 2 my home at noon to 1 points solar power generation of 90 degrees, power consumption of 40 degrees; in the afternoon from 5 to 6 solar power generation of 10 degrees, power consumption of 60 degrees. Results: 1 according to the total solar energy power generation and the total energy consumption calculation two times my solar power electricity is 100 degrees, 100 degrees, more than electricity difference is zero; so I save electricity 85 yuan, receive subsidies 35 yuan, the total revenue of 100kWh * [(1 + 0.7) /2 + /kWh = 0.35 yuan) 120 yuan.
Q:What is the system voltage of solar panels
System voltage refers to the number of solar panels composed of a solar power generation system, the maximum DC voltage of the power system.
Q:Solar power generation system how to choose?
The whole system is not equal to the power generation capacity of solar panels, but the system capacity. There are often many manufacturers to promote solar power generation efficiency how high how high, but if the choice of the circuit design and the inverter, loss of power is also completely different. For example, the centralized inverter for series system design, the efficiency of the system is about 88%, each brand inverter is also different. The advantage is that the inverter series system competition brand, low price; drawback is the solar panel is connected in series, the solar panels generating capacity of the whole system by the minimum power capacity decision, so once the board has not completely clean the ash layer is not uniform, or falling leaves or cloudy, the efficiency of the whole system will decrease.
Q:Solar power generation system installation which precautions, ah, there is a need for special attention
Pay attention to the basic power calculation is not enough! The reality is not up to
Q:What are the components of the solar photovoltaic system?
EVA: a high quality EVA film with a thickness of 0.78mm, which is made of UV resistant agent, antioxidant and curing agent, is used as a sealing agent for solar cells and a bonding agent between glass and TPT. High light transmittance and aging resistance.

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