Transpower India Electronics Pvt. Ltd. Offers Potential and Voltage Control Transformers. Transpower India Electronics Pvt. Ltd. Is an ISO 9001-2008 registered company. Transpower India Electronics Pvt. Ltd. Manufactures Transformers up to 150KVA rating, Reactors and Chokes up to 3000 Amperes, Switch mode Power Supplies and DC-DC Converters. The Potential and Voltage Control Transformers comes with less than 20VA rating, PT/VCT series are ideal selection.