Voltage and potential transformers that are designed for monitoring single-phase and three-phase line voltages in power-metering applications are used mainly as step-down devices. They are designed ...

ANSI Class The ANSI metering class transformers are units intended ... The wound primary type is more common in the higher (greater than 600V class) voltage class current transformers as it makes the ...

[Renaud] built a AC power meter from scratch ... The first is a typical voltage stepdown transformer. This brings the AC line voltage down to +/- 10V, which is more amenable to digital sampling.