Yuyao Ollin Photovoltaic Technology Co., Ltd.
Yuyao Ollin Photovoltaic Technology Co., Ltd Factory Address：Xinlang Road Wanyang Industrial Park No.2 Block 1/2nd floor Langxia Town, Ningbo Yuyao City,Zhejiang Province ,China
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| ITEM NO | 20W/18V |
| MONO or POLY | poly |
| Maximum power (Wp) | 20wp |
| Maximum power voltage (V) | 18 |
| Maximum power current (A) | 1.11 |
| Open circuit voltage (V) | 21.6 |
| Short circuit current (A) | 1.19 |
| Number of cells (Pcs) | 36 |
| Size of module (mm) | 480*340*23 |
| Brand Name of Solar Cells | HT |
| Maximum system voltage (V) | 715 |
| Temperature coefficients of Isc (%) | 0.065+/-0.015%/°C |
| Temperature coefficients of Voc (%) | -(2.23+/-0.1)mv/ °C |
| Temperature coefficients of Pm (%) | -(0.5+-0.05)/ °C |
| Temperature coefficients of Im (%) | +0.1/ °C |
| Temperature coefficients of Vm (%) | -0.38/ °C |
| Temperature Range | -40°C~+85°C |
| Tolerance Wattage (e.g. +/-5%) | +/-5% |
| Surface Maximum Load Capacity | 60m/s(200kg/sq.m) |
| Allowable Hail Load | steel ball fall down from 1m height |
| Weight per piece (kg) | 2.2 |
| Length of Cables (mm) | |
| Cell Efficiency (%) | more than13% |
| Module Efficiency (%) | more than 8% |
| Output tolerance (%) | +/-5% |
| Frame (Material, Corners, etc.) | Aluminum |
| Standard Test Conditions | AM1.5 100mw/cm2 25°C |
| Warranty | 2 years product warranty and 25years 80% of power |
| FF (%) | 75% |
| Packing | 10PCS/ CTN |
| Unit Price |
Advantages
Solar street lights are independent of the utility grid. Hence, the operation costs are minimized.
Solar street lights require much less maintenance compared to conventional street lights.
Since external wires are eliminated, risk of accidents are minimized.
This is a non polluting source of electricity
Separate parts of solar system can be easily carried to the remote areas
It allows the saving of energy and also cost.
Disadvantages
Initial investment is higher compared to conventional street lights.
Risk of theft is higher as equipment costs are comparatively higher.
Snow or dust, combined with moisture can accumulate on horizontal PV-panels and reduce or even stop
energy production.
Rechargeable batteries will need to be replaced several times over the lifetime of the fixtures adding to the
total lifetime cost of the light.
The charge and discharge cycles of the battery is also very important considering the overall cost of the
project.
