NERC-TRANSMISSION EXAM WITH GUARANTEED ACCURATE ANSWERS
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Course
NERC-TRANSMISSION
Institution
NERC-TRANSMISSION
Current Transformer - ACCURATE ANSWERS Instrument Transformers design for transforming large current magnitudes to secondary current suitable for relaying and metering. The secondary current flow is proportional to the larger primary current flow.
Cycle - ACCURATE ANSWERS One full sine wave cycl...
NERC-TRANSMISSION EXAM 2024\2025
NERC-TRANSMISSION EXAM 2024\2025 WITH GUARANTEED ACCURATE
ANSWERS
Current Transformer - ACCURATE ANSWERS✔✔ Instrument
Transformers design for transforming large current magnitudes to
secondary current suitable for relaying and metering. The secondary
current flow is proportional to the larger primary current flow.
Cycle - ACCURATE ANSWERS✔✔ One full sine wave cycle that is
divided into 360 Degrees. The waveform passes through zero, Rises to a
maximum, drops back to zero, drops to a minimum, then rises again to
zero. Both current and voltage in North America Power Systems have
cycle wave forms that will a repeat 60 times a second.
Fault - ACCURATE ANSWERS✔✔ An event occurring on an electric
system such as a short circuit, a broken wire, or intermittent connection.
, Misoperation - ACCURATE ANSWERS✔✔ The failure of a Composite
Protection System to operate as intended for protection purposes.
Overlapping Zone - ACCURATE ANSWERS✔✔ Where two or more
protective relay zones overlap at an electrical circuit of device. This
ensures complete protection of the system.
Pilot relaying - ACCURATE ANSWERS✔✔ Used to provide selective
and high-speed tripping for any fault location on the protected line by
establishing Communications between relays.
Potential Transformer - ACCURATE ANSWERS✔✔ Also known as
PT's transform primary voltage to a smaller secondary voltage suitable
for metering relaying. The secondary voltage is usually around 120 volts
and is proportional to the higher primary voltage.
Power line carrier (PLC) - ACCURATE ANSWERS✔✔ This is a way of
using power lines to carry Communications. It can be used to provide
Communications between protective relays at either end of a
transmission line.
Protection system - ACCURATE ANSWERS✔✔ Protective relays,
communication systems, voltage and current sensing devices, Station
DC Supply associated with protective functions, and control circuitry
associated with protective functions.
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