Glossary of Electrical Terms in English — S
S
Sample - sample
Sampling cycle — sampling cycle
Satellite substation — group substation for remote control
Saturable reactor — saturated reactor
Saturated transformer - saturated transformer
Saturation — saturation
Saturation zone — zone of saturation
Saturation region — saturation region
Scale — scale
Schematic diagram — a structure diagram
Screening — screening
Screw connection - twisting of wires Secondary - secondary
Secondary circuit — secondary circuit
Secondary control — secondary control
Secondary conductors — secondary clamps
Secondary relay — secondary relay
Secondary testing — verification of relay protection by secondary current and voltage
Secondary Voltage — Secondary Voltage
Secondary winding - secondary winding
Selective protection - selective protection
Selective time interval — level of selectivity
Selective exclusion plan — selectivity map
Selectivity — selectivity
Switch disconnector - bus disconnector
Self-adjusting control - self-adjusting control system
Self supply
Self-control — direct control
Self-excitation — self-excitation
Self-extinguishing fault - self-extinguishing fault (fault that clears itself without shutting down the object)
Self-holding contact
Self-induction — self-induction
Self-locking contact-self-locking contact
Self-observation - self-observation
Self-oscillation-self-swaying
Self-regulation-self-regulation
Self-monitoring — self-control
Self-synchronization
Self-sync-self-sync
Semi-automatic system - semi-automatic system
Semiconductor - Semiconductor
Semigraphic method — graphic-analytical method
Senior shift engineer — senior shift leader
Sensitive — sensitive
Sensitive … protection — sensitive protection of something
Sensitivity — sensitivity
Target Element Sensitivity — The sensitivity of the target element
Individual coils — Individual coils
Separate network - separate network
Sequence control — sequential control
Serial Access — Serial access
Serial communication — serial interface
Series Capacitance — Longitudinal Capacitive Compensation
Series compensation — sequential compensation
Serial connection — serial connection
Setup — setup
Setting current — current setting
Tuning knob — a switch for adjusting setpoints
Actual value setting — adjustable set point
Setting value — set value
Shield — screen
Protective case - shielding case
Shift engineer — shift leader
Shock current — shock current
Shop Instructions — Factory Instructions Short Circuit — Short Circuit
Short circuit and ground — short circuit to ground
Short circuit between phases
Short circuit characteristic
Short-circuit current-short-circuit current
Short Circuit Current Calculations
Short circuit earth current
Short circuit protection - short circuit protection
Short Circuit Power-Short Circuit Power
Arc short circuit — arc short circuit
Short circuit to ground — Short circuit to ground
Shunting — maneuvering
Signal level — signal level
Signal-to-noise ratio-signal-to-noise ratio
Signal transmission time — signal transmission time
Silent arc — stable arc
Simplex channel — simplex channel
Mock test — a test on a model
Simulator - simulator
Single Action Auto Close - Single action with automatic action
Single-bus substation — a substation with a single busbar system
Single-channel — single-channel
Single-circuit line
Single wire — one wire
Element relay — a relay with one element
Single Feeder (Radial Feeder) — Radial line
One-line diagram - one-line diagram of an electrical network
Single-phase automatic reclosing equipment reactivate
Single-phase auto-close-single-phase auto-close
Single-phase short circuit-single-phase short circuit
Single-phase transformer-single-phase transformer
Single pole automatic reclosing equipment
Single pole switch - single pole switch
Single shot — Single shot recap
Single power supply — unidirectional power supply
Single-phase three-phase rectification-combined (single-phase) three-phase automatic closing
Single-turn current transformer
Slave relay-relay-repeater
Slide - slide
Slip Rate — Slip rate
Slow-acting relay — a slow-acting relay
Slow release relay-slow release relay
Slugged — inertial
Smooth variation — smooth variation
Software - software
Solar battery - solar battery
Soldered connection - soldered connection
Soldering - soldering
Solid state relay — non-contact relay
Solid state switch - solid state switch
Solidly grounded neutral — solidly grounded neutral
Spare parts - spare parts
Spark capacitor Spark suppression circuit
Specified value — a specified value
Speeded motor — motor with a speed regulator
Speed governor — speed governor
Speed governor — speed governor
Acceleration — increasing speed
Velocity voltage generator — tachogenerator
Split-phase — split phase
Split Secondary - Secondary winding with the midpoint brought out
Split the tires — tire splitting
Spring contact — contact spring
Spur line — tap
Parasitic capacitance — Parasitic capacitance
False opening — false closing
False shutdown — false shutdown
Stability — stability
Stable — stable
Stable conditions — stable mode
Steady Oscillation — Steady rocking
Point of change of stage — point of change of stage PZ
Stage circuit — cascade circuit
Stride length — stride length
Standby — installation in standby mode
Backup power — backup power
Star-delta switch — switch from star to delta
Star-star connection star-star connection
Start relay — start relay
Initial situation — startup mode
Run tests — run tests
Start parallel work — start parallel work
Start operation (on relay) - start operation (relay)
Start-stop control — periodic control
Static compensator — static compensator
Static Transducer - Static Transducer
Static error - static error
Static Excitation — Static Excitation
Station auxiliary voltage — auxiliary voltage
Station under AGC (LFC) — Power plant participating in ARCHM
Stator ground fault protection — protection against ground faults in the stator
Stator in Frame Fault — Stator to frame short circuit
Stator winding - stator winding
Stationary short-circuit current-stationary short-circuit current
Stable stability — static stability
Action step - action step
Step-by-step method-consecutive interval method
Step substation
Step-down transformer-step-down transformer
Pitch change point — pitch change point
Step length — step length
Stepless control — stepless regulation
Step characteristic — step characteristic
Stepwise reaction — transient reaction
Step-up substation - mobile substation
Step-up transformer — step-up transformer Stray capacitance — stray capacitance
Stray currents — homeless (stray) currents
Stub line — train
Consecutive failures — successive failures
Substation - electrical substation
Substation relay room — Substation relay protection room
Subtransient reactance — subtransient resistance
Reclose Successful — Reclose successful
Sudden change in frequency — Sudden change in frequency
Sudden load change — a sudden change in load
Superconductivity — superconductivity
Imposed current — superimposed then
Superposition method — superposition method
Supervisor - shift manager
Trip Control Circuit — trip circuit supervision
Power (Relay) — Power (Relay)
Power failure — Power failure
Supply point — power supply point
Supply voltage — supply voltage
Supply voltage of auxiliary circuits — supply voltage of secondary circuits (auxiliary)
Susceptance — reactive conductance
Prolonged damage — permanent damage
Permanent short circuit current
Cleaning — cleaning
Swing Lock — Swing Lock
Wire swing — wire dance
Switch - a switch
Switchable Busbar — A busbar system with a switchable section
Automatic Bus Breaker - Section Breaker
Switch - switchgear
Method of symmetric components
Symmetrical short circuit — symmetrical short circuit
Symmetrical voltage — symmetrical voltage
Synchronization — synchronization
Synchronization — synchronization
Synchronizing relay — synchronizing relay
Synchronism — synchronism
Synchronoscope - synchroscope
Synchronous compensator — synchronous compensator
Synchronous generator — synchronous generator
Synchronous motor - synchronous motor
Synchronous operation - synchronous operation
Synchronous resistance — synchronous resistance
Systematic error
System configuration — power grid configuration
System management — power system management
System control center — power system dispatch center
System Diagram - System Diagram (Electrical Network)
Working diagram of the system