Japan Photovoltaic Energy Association (JPEA) announced the guidelines for maintenance and inspection of solar power generation systems that fall in the category of "general electric facilities" (output capacity: 10k to 50kW) May 30, 2014.
The guidelines were formulated so that solar power generation systems can be used in a safe, reassuring way. Based on the "JEM-TR228," the Japan Electrical Manufacturers' Association's (JEMA) guidelines for maintenance and inspection of low-output solar power generation systems, JPEA added items and outlines related to inspections at the time of construction and completion of a system as well as daily and periodic inspections.
JPEA expects that the new guidelines will be used for maintenance and inspection of solar systems along with the guidelines for residential (10kW or lower output capacity) solar systems.
In addition to contents related to electric equipment for power sources in general, the new guidelines describe inspection procedures appropriate for each installation environment of solar power generation facilities. According to the guidelines, when solar panels are installed in a high place and cannot be easily approached, they should be visually inspected from a safe place on the ground.
For daily inspection, the guidelines include typical items for solar power generation systems such as to suggest that bird's nest, weeds, trees, etc should not influence the safety and power generation capability of a solar power generation system.