What does the acronym CCVT stand for in the context of substation communications?

• A. coupling capacitor voltage transformer
• B. current capacitor voltage transformer
• C. coupling capacitor variable transformer
• D. current capacitor variable transformer

Answer: (A)

CCVT stands for Coupling Capacitor Voltage Transformer. It uses a capacitor network to couple a portion of the high-voltage line voltage into the primary of a voltage transformer, producing a safe, low-voltage output for metering and protection relays while preserving the waveform’s phase. This arrangement is specific to voltage measurement and protection needs in substations; the other options describe currents or a variable transformer, which are not what CCVT denotes.