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Protection and Control
Transformer biased current differential protection (87T)
Transformer unrestrained instantaneous current differential protection (87T)
Transformer biased DPFC current differential protection (87T)
Reactor biased current differential protection (87R)
Reactor unrestrained instantaneous current differential protection (87R)
Reactor biased DPFC current differential protection (87R)
Inrush blocking
CT saturation blocking
Overexcitation blocking
CT circuit failure blocking
Amplitude compensation
Phase angle compensation
Restricted Earth Fault Protection (64REF)
Winding differential protection (87W)
Inter-turn fault protection for reactor (21IT)
Overexcitation protection (24)
Underfrequency and overfrequency protection (81U/81O)
Mechanical protection (MR)
Temperature protection (26)
Two-stage phase-to-phase impedance protection (21P)
Two-stage phase-to-ground impedance protection (21G)
Power swing blocking releasing (PSBR)
Four-stage phase overcurrent protection (50/51P)
Four-stage neutral overcurrent protection for each side(50/51G)
Two-stage negative-sequence overcurrent protection (50/51Q)
Two-stage phase overvoltage protection (59P)
Two-stage residual overvoltage protection (59G)
Four-stage undervoltage protection (27P)
Thermal protection (49)
Breaker failure protection (50BF)
Pole disagreement protection (62PD)
Phase overcurrent alarm (51PAlm)
Residual overvoltage alarm (59GAlm)
Voltage and current drift auto adjustment
Frequency tracking
Transformer biased current differential protection (87T)
Transformer unrestrained instantaneous current differential protection (87T)
Transformer biased DPFC current differential protection (87T)
Reactor biased current differential protection (87R)
Reactor unrestrained instantaneous current differential protection (87R)
Reactor biased DPFC current differential protection (87R)
Inrush blocking
CT saturation blocking
Overexcitation blocking
CT circuit failure blocking
Amplitude compensation
Phase angle compensation
Restricted Earth Fault Protection (64REF)
Winding differential protection (87W)
Inter-turn fault protection for reactor (21IT)
Overexcitation protection (24)
Underfrequency and overfrequency protection (81U/81O)
Mechanical protection (MR)
Temperature protection (26)
Two-stage phase-to-phase impedance protection (21P)
Two-stage phase-to-ground impedance protection (21G)
Power swing blocking releasing (PSBR)
Four-stage phase overcurrent protection (50/51P)
Four-stage neutral overcurrent protection for each side(50/51G)
Two-stage negative-sequence overcurrent protection (50/51Q)
Two-stage phase overvoltage protection (59P)
Two-stage residual overvoltage protection (59G)
Four-stage undervoltage protection (27P)
Thermal protection (49)
Breaker failure protection (50BF)
Pole disagreement protection (62PD)
Phase overcurrent alarm (51PAlm)
Residual overvoltage alarm (59GAlm)
Voltage and current drift auto adjustment
Frequency tracking
