Photovoltaics. cables. insulation resistance. breakdown voltage. water. ageing. degradation factorsPacka, Juraj, 1971- Changes of insulation properties of photovoltaic cables caused by ageing treatment / aut. Juraj Packa, Vladimír Kujan, Daniel Štrkula, Vladimír Šály, Milan Perný. Kujan, Vladimír, 1980-. Štrkula, Daniel, 1990-. Šály, Vladimír, 1956-. Perný, Milan, 1985- In: Transactions on Electrical Engineering. -- ISSN 1805-3386. -- Vol. 6, No. 1 (2017), s. 6-9.