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pv power station arrival inspection

with the "13th five year plan" entering the "14th five year plan" era, china's photovoltaic installed capacity has been growing, and the third-party testing demand has become a rigid demand of investors. the arrival inspection and acceptance is a series of activities, such as sampling, testing and qualification determination of equipment such as arrived pv modules for the new and expanded photovoltaic power station project, according to the technical agreement on procurement of important components and relevant standards, entrusted by the power station owner, epc, construction party, module manufacturer and other relevant parties through consultation. through the arrival inspection service provided by noa, problems such as visual defects, hidden cracks, broken modules, abnormal power and rear panel materials can be found before installation, and responsibilities can be clarified to avoid quality disputes in the later period.

noa, as a fair and authoritative third-party service agency in the industry with multiple internal and external approvals, has an advanced power station testing and professional technical service team. so far, it has provided nearly 10gw of testing and inspection services for the new energy industry, serving more than 500 customers. based on gb/t 6495, gb/t 2828, iec 62446, nb/t 32034 and other standards, and in accordance with the contract, technical specifications, relevant standards for key equipment, sampling standards and other requirements of relevant parties of photovoltaic power stations, we provide arrival inspection services for large-scale ground centralized photovoltaic power stations, distributed photovoltaic power stations, poverty alleviation photovoltaic power stations of provincial or local governmentspoverty alleviation offices and and household photovoltaic power stations , an accurate and reliable third-party inspection and testing report would be issued.

service content

one、service content

1. outer packaging and quantity, specifications and models inspection - check whether the outer packaging box and information of the modules are intact
2. photovoltaic module power test - module i-v characteristics confirmation
3. visual inspection of photovoltaic modules - whether there are any appearance defects in the modules
4. module el test - whether the module has defects such as cracking
5. module raw material characteristics test
6. module hot spot endurance test
7. other specific commissioned projects

two、related standards

○  power plant module procurement contract and technical agreement
○  gb/t 2828.1 sampling procedures for inspection by attributes - part 1: sampling schemes indexed by acceptance quality limit (aql) for lot-by-lot inspection
○  gb/t 6495.10 photovoltaic devices - part 10：methods of linearity measurement
○  gb/t 6495.1 photovoltaic devices. part 1: measurement of photovoltaic current-voltage characteristics
○  gb/t 6495.3 photovoltaic devices. part 3: measurement principles for terrestrial photovoltaic (pv) solar devices with reference spectral irradiance data
○  gb/t 6040-2002 general rules for infrared analysis
○  iec 61730.1 photovoltaic (pv) module safety qualification - part 1: requirements for construction
○  iec 61215 terrestrial photovoltaic (pv) modules - design qualification and type approval
○  nb/t 32034 on-site testing procedure for pv module of pv power station
○  other technical requirements of the consignor, etc

service process

q&a

1.how does the hidden crack occur, which could be found by module arrival inspection el test?

modules are trampled and hit during transportation, handling, etc., which will cause the module to produce a hidden crack that is not easy to be observed by the naked eye. when the cracking causes the fine grid line to break, the thin grid line cannot deliver the collected current to the main grid line, which will cause the battery to partially or even completely fail. it is recommended to track the operation of the problem modules for a long time and deal with potential problems in a timely manner.

2.what should i do if the arrival module is inconsistent with the box mark?

timely feed back to the factory and the owner, check and analyze the causes. comprehensively inspect the components that are inconsistent with the shipping marks to see if they are unqualified. if they are unqualified, suggest the owner to make a claim.

3.what is the impact of a small creepage distance on a module?

this results in insufficient withstand voltage and insulation distance. poor electrical properties, poor insulation properties, there will be a large leakage current and even ignition phenomenon. it is recommended that the owner communicate with the factory to replace the component.

4.how do bubbles on the front panel of the cell affect the module?

when the module is used outdoors, due to the influence of light and normal operation of the module, the bubble will show a trend of expansion. in the long run, eva at the bubble position will delaminate with the glass and the back panel, directly making the module scrapped. it is recommended that the owner communicate with the factory to replace the module.

our advantage

authoritative qualification

noa has been approved by certification and accreditation administration of the people’s republic of china（cnca）(cnca-r-2002-051), and has obtained qualification of china inspection body and laboratory mandatory approval (cma),and has passed the multiple approvals of china national accreditation service for conformity assessment (cnas), international accreditation service (ias), united kingdom accreditation service (ukas), joint accreditation system of australia and new zealand (jas-anz). noa has been approved by state administration for market regulation of china, and has been recognized as inspection and testing institution of china's special equipment, as well as the qualification of china's national equipment supervision and engineering supervision. noa-dci is the notified body of the ce directive of the european commission. noa has been recognized by the international electrotechnical commission (iecq) by obtaining electronic component quality assessment system. it is also a national inspection and assessment notified body of import and export commodity in china.noa is a high-tech enterprise in shanghai.

improve performance, realize asset value appreciation, and service throughout the entire value chain

from pre-design to post-operation, noa has the ability to guarantee the whole life cycle of the business. noa, as an independent third-party inspection company, has a large number of domestic and international standards and specifications proficient in design, welding, non-destructive testing, painting, packaging and other fields the experienced team of professional engineers and inspection experts, with more than ten years of experience in the domestic market, is familiar with all aspects of the domestic industrial equipment supply chain, and can provide you with technical support services for the full life cycle of technical services in a timely manner, combining various products. inspection, certification, testing, consulting, and auditing services can provide you with one-stop all-round comprehensive services.

quality, efficiency and service

noa has formed a mature and solid operation system in the development of more than 20 years. we let technical experts who are familiar with market regulations and testing standards and have professional industry experience to carry out inspection, evaluation and design review work. while meeting the requirements of domestic and international standards, we ensure that customers can obtain satisfactory service results in the first time with accurate time-sensitive management methods, and ensure that customers can seize the opportunity in the market competition.

service area

noa inspection services currently cover europe, australia, russia, some middle east regions and most regions in china. noa can ensure the consistency and continuity of customer service in different regions, and eliminate the impact of unfamiliar environments on customer quality. the guarantees and the impact of project implementation enable customers to participate in different markets across the country or around the world with flawless quality.

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