Solar module reliability test (solar battery)
Purpose: The design life of the solar photovoltaic module is about 20 to 30 years, and the reliability test is the design verification of the simulated onshore solar photovoltaic module (silicon crystallization), allowing the module to operate for more than 20 years in a general climate.
Solar module test specification list:
IEC6125 - Environmental Test Method for Solar Electrical Components for Land Use (GB-9535)
GB 9535 - Environmental test method for solar cell components for terrestrial
GB 19064-Technical conditions and test methods for solar photovoltaic power systems
Method for measuring the output voltage and output current temperature coefficient of JIS C 8917-crystalline solar cells and models
UL 1703
IEEE1262
IEC61215 - for crystallization model groups installed on land (inspection test, factory inspection), not for concentrating modules
IEC61646 - Design and identification of thin film volt components for the ground
IEC61215 - for crystallization model set (inspection test, factory inspection) installed on land, not suitable for concentrating mode
IEC61646 - for Crystalline Solar Cell Module Encapsulation and Test:
Visual inspection
2. Maximum power measurement
3. Insulation resistance test
4. Measurement of temperature coefficient
5. Measurement of the standard operating battery temperature (NOCT: Nominal Operating Cell Temperature)
6. Performance in standard test environment and NOCT
7. Performance under low illumination
8. Outdoor exposure test
9. Heat class durability test
10. Thermal cycle test
11. Wet freezing test
12. Damp heat test
13. Lead end strength test
14. Wet leakage current test
15. Mechanical load test
16. Hail test
17. UV pretreatment test (option)
18. Bypass Diode Thermal Test (optional)
Basic performance requirements after the test:
a. There are no major visual defects.
b. The maximum power should not be lower than 5% before the test (current and current characteristics of the test module with illuminance of 700W/M2---1100W/M2 analog light source)
c. Insulation resistance needs to meet the requirements of the specification (40M/M2 or above)
Standard output power (Performance at STC):
Inspection device--Solar battery IV characteristic test device, solar simulator
Measuring temperature requirements: 25 ° C ± 2 ° C, relative humidity ≤ 75% RH
Illumination: 1000W/M2
Spectral distribution: AM1.5
Test requirements:
a. The maximum output power attenuation under standard test does not exceed 5% before the experiment
b. Crack inspection (the area does not exceed 10%)
c. Do not form continuous bubbles or lips between the frame of the component and the battery.
Measurement items: peak power (Pmax) xxxW, peak voltage (Vmp) xx.xV, peak current (Imp) x.xA, short circuit current (Isc) x.xA, open circuit voltage (voc) voltage xxxV
Outdoor Exposure Test [Lightfastness Test]:
Description: Initially evaluates the ability of the component to withstand exposure to outdoor conditions and may reveal a comprehensive attenuation effect that is not detected in laboratory tests.
(This lab can only be used as an indication of possible problems)
Solar illuminance monitor (accuracy rate ±10%)
The cumulative total radiation of outdoor exposure test is greater than 60K Wh/m2
The performance of the components after the test shall meet the following requirements:
a. After inspection, no serious appearance defects were found.
b. The maximum output power attenuation under standard test conditions does not exceed 5% before the test
c. Insulation resistance should be >40MΩ/m2
Performance at Low Irradiance:
The electrical properties of the component were measured at 25 ° C and a natural illumination of 200 W/m 2 (measured with a suitable standard cell) or a Class A simulator meeting the relevant standard requirements.
Hot-spot Endurance Test: The Insulation Resistance should be tested at 1000W/2 illuminance under the worst hot spot conditions:
Step 1: 0-1000V (1s speed increase) [500V is tested when the maximum voltage does not exceed 50V]
Step two: 500V DC voltage
Step 3: Measure the insulation resistance (after the endurance test, measure the insulation resistance)
Test requirements: insulation resistance ≧40MΩ/m2
IEC6125 test conditions:
-40±2°C (10min) â†â†’85±2°C (10min), the temperature change rate is less than 100°C/h, 50cycle (warm test after test)
-40±2°C (10min) â†â†’85±2°C (10min), temperature change rate is less than 100°C/h, 200cycle (only thermal cycle test)
-40°C (2h) â†â†’90°C (2h), the temperature change rate is less than 120°C/h, 200cycle
Damp Heat: 85±2°C/85±5%/1000h
Wet cooling test: a. Perform 50 temperature cycling tests:
Test 1: 85 °C / 85 ± 5% (20h) ↠→ -40 ° C (0.5 ~ 4h) high temperature rise and fall temperature (100 ° C / h), low temperature rise and fall temperature (200 ° C / h), 10 cycle
Test 2: 85 °C / 85 ± 2.5% (20h) ↠→ -40 ° C (0.5 ~ 4h) high temperature rise and fall temperature (120 ° C / h), low temperature rise and fall temperature (200 ° C / h), 10 cycle
Hail test:
Description: Verify that the component can withstand hail impact
Refrigerator: -10 ± 5 ° C
Ice hockey: 25 mm ± 5% in diameter, quality 7.35 g ± 5%, speed 23 m ± 5% per second
Impact position: 11 points, balance: accuracy ± 2%, speed test instrument: accuracy ± 2%
Lead end strength test:
Description: Determines whether the lead ends and their accessories can withstand the forces experienced during normal installation and operation.
Test method: the lead should be able to withstand at least the weight of the component itself, and can withstand more than 10 bends
Mechanical Loading Test (Mechanical Loading):
Description: The ability of the simulated solar panel to withstand wind, snow and ice loads
a. The uniform flow of the surface of the module and the back of the module are applied at 2400Pa for 1 hour, and the coil is rotated 2 or 3 times.
Twisting experiment:
Description: Check the components installed on the non-ideal structure may cause hidden dangers
Test method: keep the three corners of the module on the same plane, and shift the fourth corner distance in the vertical direction.
UVExposure:
Temperature: 60±5°C
Wavelength: 280 ~ 385nm
Illumination: ≦250W/m2
The total exposure is: 15KWh/m2
The medical teaching model is elaborately made with imported reinforced plastics as raw materials. The product has vivid modeling, standard technology, light and firm simple disassembly and assembly, non-toxic and harmless, easy to preserve and transport. We have won a very good reputation after more than 10 years export experience. We have taken part in many foreign exhibitions, such as 2018 Swiss education exhibition,2020 Arab lab, Our products have been exported to Southeast Asia, Eastern Europe, Western Europe, South Africa, Middle East, South America, North America and other countries and regions in the world.
Anatomy Ear Model,Human Heart Model,Anatomy Brain Model,Medical Science Model
Xinxiang Vic Science&Education Co.,Ltd. , https://www.hnmedicalsciencemodel.com