Products > Thytronic Protection Relay > S-Series
Products detail
Inquiry Photo Description Model Technical parameters Certification Remark
SVR Microprocessor-based relay for voltage protection SVR
Protection functions
Undervoltage (27)
Direct sequence undervoltage (27V1)
Overvoltage (59)
Residual overvoltage (59N)
Negative sequence overvoltage (59V2)
Other models also available, please contact us for details.
STR Microprocessor-based relay for motor protection STR
Protection functions
Phase undercurrent (37)
Negative sequence overcurrent (46)
Thermal image (49)
Phase overcurrent (50/51)
Residual overcurrent (50N/51N)
Locked rotor (51LR(48)/14)
Maximum number of starting (66)
Other models also available, please contact us for details.
SSG Feeder directional/non directional phase and earth overcurrent digital relay SSG
Protection functions
Phase overcurrent (50/51)
Residual overcurrent (50N/51N)
Residual overvoltage (59N)
Phase directional overcurrent (67)
Ground directional overcurrent (67N)
Other models also available, please contact us for details.
SKC SKC Microprocessor-based current differential relay with overcurrent, earth fault and thermal elements SKC
Protection functions
Thermal image (49)
Phase overcurrent (50/51)
Residual overcurrent (50N/51N)
Differential protection for generators and motors (87G/87M)
High impedance restricted earth fault (87NHIZ)
Biased differential for transformer (87T)
Breaker failure (BF)
Other models also available, please contact us for details.
SIG Phase and earth overcurrent digital relay SIG
Protection functions
Phase overcurrent (50/51)
Residual overcurrent (50N/51N)
Breaker failure (BF)
Other models also available, please contact us for details.
SHG Phase and earth overcurrent digital relay SHG
Protection functions
Phase overcurrent (50/51)
Residual overcurrent (50N/51N)
Other models also available, please contact us for details.
SCF Microprocessor-based synchronizing relay SCF
Protection functions
Synchro-check & synchronizing (25)
Other models also available, please contact us for details.
Feeder non directional phase and sensitive directional/non directional earth overcurrent digital relay with reclosure function. SCC
Protection functions
Phase overcurrent (50/51)
Residual overcurrent (50N/51N)
Residual overvoltage (59N)
Ground directional overcurrent (67N)
Automatic reclosing (79)
Other models also available, please contact us for details.
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