Silent Perkins Generators from YorPower. A Perkins 22 kVA generator from YorPower has the following design feature and include a high quality assembly enclosure with strong steel plate providing stiffness, rigidity and low vibration transfer. Powder coated paint work to minimise corrosion. Compact and robust increasing long life. Protection guards in radiator. Full 18 month warranty from date of purchase or 12 months from date of commissioning.