G12024 S8VK-G24024 S8VK-G24048 S8VK-G48024 S8VK-G48048 For parallel operation For backup operation S8VK-R10 S8VK-R10 S8VK-R20 - S8VK-R20 S8VK-R20 Combinations with the S8VK-C Model number S8VK-C06024 S8VK-C12024 S8VK-C24024 S8VK-C48024 For parallel operation For backup operation S8VK-R10...