Polaris solar PV net news: under normal and fault conditions to ensure safe operation of solar photovoltaic power generation unit, which was appropriate during the system design phase energy output and safety are important considerations. Once the photovoltaic plant is put into operation, to ensure the system’s long-term performance due to sub-standard affected installation or poor maintenance. In this regard, there are some key characteristics of solar photovoltaic system relies on proper electrical testing and inspection on a regular basis. Here are ten reasons to let you give serious consideration to the regular testing of photovoltaic system was installed.
1. meet the IEC62446 criteria
IEC62446 proposed to the existing installation shall make a periodic check. This standard defines a system for recording, minimum requirements for PV system debugging and testing. Standards not only require a minimum of electrical testing and inspection requirements, also specifies how to record tests and test results, available to consumers after the installation.
Whenever possible, the foregoing periodic verification of the findings and recommendations should be taken into account. A periodic verification report should include all faults, carrying out repairs or improvements (such as upgrading the system to meet the current standard).
2. to avoid fire risk
With the growth of the past few years number of rooftop solar mounting system, the number of reports of fires is also increasing. By rooftop solar photovoltaic systems electrical fault caused by home fires in the United Kingdom, and Australia and the United States, and France and China had occurred. Electrical wiring and components for PV systems are tested regularly, you can ensure the safe operation of the system, any electrical failure of the potential fire hazard.
3. effective grounding
As with all electrical devices, solar panel and bracket system must be grounded in order to reduce the potential for electric shocks and fires. If grounding systems with degraded over time, and any closer and touching the metal part of the photovoltaic systems are susceptible to shock. Despite the low possibility of electric shock in the event, due to the array of high voltage, material injury the chance is very high, will be accompanied by the risk of falls from a roof-mounted.
4. ground fault
Photovoltaic power generation systems, especially in large systems, have a long route, most of them buried in the ground. Low insulation levels will make electricity from the PV system leak into the ground. In wet conditions the inverter’s insulation monitoring of residual current monitoring function will also stop the inverter starts, which in turn will significantly reduce the efficiency of the PV installation, this is a big problem.
5. environmental degradation
Photovoltaic power generation system itself determines its exposure in the environment. Cable and connector due to the moisture erosion performance of PV device damage or corrosion can cause performance degradation or fire risk. Routine electrical test support system of performance monitoring, and to take any necessary repair or remedy.
6. surface contamination and physical damage
PV components during use can become dirty or contaminated, lowering operating efficiency and performance of the system. Similarly, environmental exposure may lead to PV installation component of physical damage. Bird droppings and other foreign bodies PV module could suffer, affecting output performance. Periodic electrical testing as part of the scheduled maintenance so that any problems are identified and diagnosed.
7. cord damaged
The most obvious example is when wiring wiring error in roofs or vegetation below the component through the contact. Eventually, cable coat is worn out or be gnawed by rodents can cause metal wires exposed, risk of electric shock. Cabling and wiring of any age can be determined by conventional electrical test potential failures.
8. system performance verification
Solar PV system installation was carried out in careful cost consideration, price subsidies and investment returns after the.
Therefore, system performance and component output and output validation is especially important. In many cases, a simple electrical fault or fault will cause the component’s serious shortage of electric generating capacity. Although appropriate measurement of system performance can be given instructions, periodic electrical testing is the key to verify that the long period of continuous performance.
9. warranty and the fulfillment of the commitment
Solar photovoltaic power generation system of periodic electrical tests can help identify and confirm the continuing safe operation and maximum power output performance, tests can be used as part of PV system components and warranty protection.
10. customer files
All solar photovoltaic installations need to provide customers with a variety of documents and forms. System logging data usually include systems, detailed electrical diagrams, installation information, operating and maintenance instructions as well as other information needed according to standards or regulatory requirements.
Testing and debugging of all copies of the data should also be provided on electrical safety and should at least include the results of validation tests, as part of the system setup program.
Original title: top ten reason to PV that you regularly check the installation