For 1KVA to 5000KVA hz frequency converters in both rotary and solid state designs, visit the power experts at Visicomm. Visicomm manufactures a broad range of frequency converters. Our website at www.50hz.com will give you an overview of our products. Select a product category from solid state or rotary frequency converters or line isolation to view specific product information and related topics. For fast service from California to New York, contact us toll free at 1-866-221-3131 for a guided tour to the information you need on our voltage changers.