Parameters, prices and installation methods of solar panel

The solar energy battery board's role is to convert the sun's light energy into electrical energy, the output direct current in the battery. Solar panel is one of the most important components of solar power generation system, the conversion rate and service life is to determine whether solar cell has the use value of important factor.

Component design

According to the international electrotechnical commission IEC, 1215:1993 standard requirements for design, with 36 or 72 pieces polycrystalline silicon solar cells in series to form various types of 12 v and 24 v components. This component can be used in all kinds of household photovoltaic system, independent photovoltaic power station and grid photovoltaic power station, etc.

Raw material characteristics

Cell: adopting the high efficiency (14.5%) of polysilicon solar encapsulation, ensure sufficient solar panels generate electricity power.

USES low iron tempered glass: suede glass (also known as the white glass), the thickness of 3.2 mm, the solar cell spectral response range of wavelengths (320-1100 nm), light transmittance over 91%, for more than 1200 nm infrared light with high reflectivity. The glass and radiation ability of the sun's ultraviolet light, light transmittance is not falling.

EVA: made with ultraviolet resistant agent, antioxidant and curing agent of the thickness of 0.78 mm high quality EVA film as sealant of solar cell and and the connection between the glass, TPT agent. With high light transmittance and anti-aging ability.

TPT: solar cells on the back of the shroud - fluorine plastic film is white and reflection of the sun, so the efficiency of the component is slightly increased, and because of its high infrared emissivity, also can reduce the working temperature of components, but also to improve the efficiency of the component. Of course, the fluorine plastic film first solar cell encapsulation materials required by the aging resistant, corrosion resistant, airtight etc. basic requirements.

Frame: aluminum alloy frame with high intensity, mechanical shock resistance ability.

The basic parameters

Standard test conditions: (AM1.5) irradiance = 1000 w/m2, battery temperature = 25 ℃;

Insulation voltage: 600 v or higher;

Border grounding resistance: 10 or less hm;

The wind pressure: 2400 pa;

Fill factor: 73%;

Short circuit current temperature coefficient: + 0.4 mA / ℃;

The open circuit voltage temperature coefficient: 60 mv / ℃;

Working temperature: - 40 ℃ ~ + 90 ℃;

Component wiring instructions

1, install the necessary tools

M4 word screwdriver; phillips screwdriver each one.

2, the junction box covers to open

Will the M4 a screwdriver according to the installation of the junction box of insert lid marked on the hole, will gently lifted one foot, so first to raise four corners on the edge, can open the lid.Box with wiring fender, lift the can see three terminals.

3, the panel wiring

Beside the left and right two terminals have sign is negative, it means the battery in the working status of output voltage is negative, according to the demand on the anode, cathode anode.

Wiring adopts mechanical compaction method, use the M4 cross screwdriver screw terminal clamp screw, wire after peel through the G7 cable sealing joint, insert wiring in the hole, the line pressure.

Electric wire, protective cover, use the M4 cross-screwdriver self-drilling screw screwed into the screw hole, after been fixed on the junction box cover, the panel wiring is completed.

4, panel grounding

Install grounding screw in the back of the panels, the grounding wire fixed to the grounding screw can be safety.

Price of solar panels

30 square meters of the panels is about 180 w need 20 boards or 240 w need 15 boards (a total of about 4000 w), battery needs about 35 to 40 pieces of v100a (12), an inverter, panels, accounting for 60% of the cost, now the market price is about 15 RMB around 1 w, accounts for some 30% of the cost of battery circa 600 rm (a), inverter accounts for some 5% of the cost (about RMB 3000-4000), and other cost accounts for about 5%, the total cost at about 100000 yuan RMB. Day light day 6 h, account for about 20 to 30 degrees.

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