AEP Metering & Measurement Flashcards
6 cards from real AEP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 AEP Metering & Measurement flashcards as text
What is the function of a potential transformer (PT) in a metering installation?
Answer: To step down high voltage to a safe, measurable level
Potential transformers step down high voltages to a standard low voltage (typically 120V) suitable for meter instrumentation.
What is 'time-of-use' (TOU) metering designed to measure?
Answer: Energy consumption during different rate periods throughout the day
TOU meters record energy consumption during specific time periods (on-peak, off-peak) to enable variable rate billing.
Which ANSI standard governs the requirements for watthour meters used by utilities like AEP?
Answer: ANSI C12.1
ANSI C12.1 is the American National Standard for Electric Meters, Code for Electricity Metering.
What does 'meter multiplier' refer to in metering?
Answer: A factor applied to meter readings when CTs or PTs are used
The meter multiplier is the ratio applied to scaled meter readings to obtain actual energy or demand values when instrument transformers are used.
What is net metering as it applies to AEP customers with solar panels?
Answer: A billing arrangement where excess generation credits offset energy purchases
Net metering allows customers with renewable generation to receive credits on their bill for excess electricity fed back to the grid.
What is the typical test voltage used when testing meter insulation resistance?
Answer: 1,000V DC
Insulation resistance testing of meters typically uses 1,000V DC to verify insulation integrity between circuits and ground.