10kV Three-Phase Oil-Immersed On-Load Capacity- and Voltage-Regulating Transformer

On-load capacity-regulating and voltage-regulating transformers feature two distinct rated capacities—a “large” capacity and a “small” capacity, where the latter is one-third of the former. During periods of low load, the transformer automatically switches to the small-capacity mode to significantly reduce operational losses within the distribution network. Simultaneously, this transformer is capable of automatically stepping voltage up or down, thereby stabilizing voltage quality. It is widely deployed in scenarios characterized by substantial disparities between peak and off-peak loads, as well as relatively low annual average load factors. This technology effectively resolves typical issues encountered in distribution zones—specifically, the inefficiency of “oversized equipment for undersized loads” and voltage fluctuations. While offering energy-saving benefits and investment costs comparable to those of amorphous alloy transformers, it additionally incorporates an automatic voltage regulation function; this enables on-load, real-time voltage adjustments, thereby increasing voltage compliance rates, enhancing power quality for end-users, and ensuring a safe and reliable electricity supply for residents.