Automatic Three Phase Auto Transformer, Production Power : 100-250kw

The Three Phase Auto Transformer operates typically at an input voltage of 415V AC and can be configured to step up or step down to various standard voltages such as 380V, 240V, or 480V, depending on the application. It functions on a frequency of 50 Hz or 60 Hz and is available in power ratings ranging from 3 kVA to 1000 kVA or higher. The transformer uses copper or aluminum windings with insulation class B or F and offers an efficiency of up to 98%. Cooling is achieved either through natural air cooling (AN) or oil immersion (ONAN) depending on capacity. The core is made from cold rolled grain oriented (CRGO) steel laminations, which help in reducing core losses and noise. The enclosure is typically IP23 or IP54 rated for indoor or semi-outdoor use, and thermal protection through temperature sensors or overload relays may be included. The transformer supports both delta and star connections and is suitable for continuous duty (S1). It is designed and manufactured in compliance with IS 2026, IEC 60076, or customer-specific standards for safe and reliable industrial performance.