English Dictionary of Electrical Terms — F
F
Factory tests - factory tests
Malfunction — Malfunction
Failure rate — failure rate
Failure (of protective equipment)
Falling out of step — out of synchronicity
False operation (tripping) — incorrect operation
False switching — wrong switching
Fast auto-close — fast re-close
Malfunction - failure
Interlamination fault — a short circuit between the plates of the magnetic circuit
Turn-to-turn fault — turn-to-turn short circuit
Fault between windings - short circuit between windings
Troubleshooting — short circuit tripping
Fault Clearing, Short Circuit Clearing — Shutting down short circuit currents
Time to clear a fault — total time from the time a short circuit occurs to the time it breaks
Fault current — fault current
Fault detector — trigger organ
Faulty Circuit Impedance — Faulty circuit impedance
Fault Impedance — Impedance at the point of fault
Fault rate — the percentage of failures
Fault tolerance — active resistance at the point of fault
Fault alarm — emergency alarm
Rotor winding faults — rotor winding failure
Fault recorder - emergency oscilloscope
Malfunction - emergency mode
Error statistics — damage statistics
Lift switch fault - short circuit
Feedback — feedback
Feedback Amplifier — A feedback amplifier
Feedback control — feedback control
Feedback ratio — feedback ratio
Feeder — power line
Feeder compartment — electrical connection of the switchgear
Feeder Circuit Breaker — Line Breaker
Feeder disconnector - linear disconnector
Power transformer — power transformer
Ferrite core - ferrite core (magnetic circuit)
Ferroresonance — ferroresonance
Ferroresonant voltage regulator - ferroresonant voltage regulator
Optical fibers — optical fibers
Fidelity — reproduction quality
Field suppression — field suppression
Field circuit - distribution network
Field coils — field coils, magnetizing coils
Figure of merit — quality factor
Fine reading — accurate reading
Fine-tuning — Fine-tuning step
First harmonic - first harmonic
Five-leg transformer-five-pole transformer
Fixed contact - fixed contact
Fixed Setpoint Control — Fixed setpoint control
Fixed value control — parameter control
Flash -overcurrent — overlapping current
Instant indication — tracking indication
Flexible cable — flexible cable
Flip-flop — trigger
Floating point — floating point
Float switch — float relay
Block diagram
Built-in installation - built-in installation
Foam extinguisher - foam fire extinguisher
Subsequent control-subsequent regulation
Tracking system-tracking system
Coercive control — strong regulation
Forced Shutdown — Forced Shutdown
Frame Error - Short to frame
Frame leakage protection system
Frame protection — protection against short circuit of the case
Free oscillations — free oscillations
Bandwidth — Bandwidth
Frequency converter - frequency converter
Frequency control — frequency regulation
Frequency converter - frequency converter
Frequency converter substation
Frequency division — frequency division
Frequency drift — frequency drift
Frequency interval between channels — frequency interval between channels
Frequency meter — frequency meter
Frequency modulation — frequency modulation
Frequency multiplication — frequency multiplication
Frequency reduction — frequency reduction
Frequency relay — frequency relay
Frequency response — frequency response
Function block — a function block
Basic measurement error
Fundamental wave — fundamental harmonic
Fuse - fusible link