If a potential transformer (PT) is rated at 14400/120, what is the potential multiplier?

To determine the potential multiplier for a potential transformer (PT) rated at 14400/120, you need to understand what these numbers represent. The first number, 14400, indicates the primary voltage of the transformer, while the second number, 120, represents the secondary voltage.

The potential multiplier can be calculated by taking the ratio of the primary voltage to the secondary voltage. In this case, you would find it by dividing the primary voltage (14400 volts) by the secondary voltage (120 volts):

Potential Multiplier = Primary Voltage / Secondary Voltage

Potential Multiplier = 14400 / 120 = 120

This calculation reveals that the potential multiplier is 120, meaning that the primary voltage is 120 times greater than the secondary voltage. This ratio is crucial in various applications, as it allows for the safe measurement and usage of high voltage levels by transforming them to a suitable lower level for metering and monitoring purposes.

Understanding how to calculate and interpret the potential multiplier is essential for linemen, as they frequently work with transformers and need to ensure accuracy in voltage readings for safety and operational efficiency.