How many bushings are found on the low side of a 2400/4160Y-120/240, 333 Kva transformer?

To determine the number of bushings on the low side of a 2400/4160Y-120/240, 333 KVA transformer, it is necessary to understand the configuration of the transformer.

In this specification, the transformer is wired with a low-voltage side that has two different voltages: 120V and 240V. This design usually indicates that the low-voltage side is arranged to provide two separate output voltages. According to standard practices for transformers with this type of configuration, it typically incorporates multiple bushings to accommodate the different voltage outputs, as well as the neutral connection.

For a transformer that provides both 120V and 240V outputs, three bushings are commonly used: one for the 120V service, another for the 240V service, and a third for the grounding or neutral connection. Thus, having three bushings effectively allows the transformer to connect safely and efficiently to different load requirements and maintain proper operational functionality.

The specification of the transformer performance and output indicates that three bushings are necessary to manage the connections and voltages properly at the low side.