What is the meter multiplier if the nameplate of a PT reads 2400 to 120 and a CT reads 100 to 5?

To determine the meter multiplier, we need to analyze the values provided for the potential transformer (PT) and the current transformer (CT).

The PT ratio is given as 2400 to 120, which can be simplified by dividing both numbers by 120. This yields a ratio of 20 to 1. This means that for every 20 volts on the primary side, there is 1 volt on the secondary side.

The CT ratio is given as 100 to 5, which simplifies to a ratio of 20 to 1 as well when dividing both sides by 5. This indicates that for every 20 amps flowing on the primary side, there is 1 amp on the secondary side.

To find the overall meter multiplier, we take the ratio from the PT and multiply it by the ratio of the CT. In this case, both ratios simplify to 20 to 1:

[

\text{Meter Multiplier} = \frac{\text{PT Ratio}}{\text{CT Ratio}} = \frac{20}{1} \times \frac{1}{20} = 20

]

This means that the meter is set to measure the secondary values of the PT and CT in a way that the