AEP AEP Metering & Measurement 2

Question 1

What is the function of a potential transformer (PT) in a metering installation?

Accepted Answer

To step down high voltage to a safe, measurable level

Answer

Potential transformers step down high voltages to a standard low voltage (typically 120V) suitable for meter instrumentation.

Question 2

What is 'time-of-use' (TOU) metering designed to measure?

Accepted Answer

Energy consumption during different rate periods throughout the day

Answer

TOU meters record energy consumption during specific time periods (on-peak, off-peak) to enable variable rate billing.

Question 3

Which ANSI standard governs the requirements for watthour meters used by utilities like AEP?

Accepted Answer

ANSI C12.1

Answer

ANSI C12.1 is the American National Standard for Electric Meters, Code for Electricity Metering.

Question 4

What does 'meter multiplier' refer to in metering?

Accepted Answer

A factor applied to meter readings when CTs or PTs are used

Answer

The meter multiplier is the ratio applied to scaled meter readings to obtain actual energy or demand values when instrument transformers are used.

Question 5

What is net metering as it applies to AEP customers with solar panels?

Accepted Answer

A billing arrangement where excess generation credits offset energy purchases

Answer

Net metering allows customers with renewable generation to receive credits on their bill for excess electricity fed back to the grid.

(AEP) American Electric Power Practice Test