Inventor

SUN SHAN C

27 patents

⚠️ This page may combine multiple inventors who share the name “SUN SHAN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUN SHAN C

WESTINGHOUSE ELECTRIC CORP

Protective relay device

Protective relay apparatus

Protective relay apparatus and method for providing single-pole tripping

Apparatus and method for secure digital communication

Pulse modulator using capacitor charging and discharging circuits

Protective relay apparatus

Productive relay apparatus for protection from sub-synchronous current oscillations in a power system

Signal quality monitor for protective relay system

Signal quality monitor for protective relay system

Frequency modulation or pulse modulation demodulator

Protective relay system

Network protector relay

Symmetrical component sequence filter

Apparatus for detecting subsynchronous current in power systems

Inverse time-overcurrent relay using successive linear approximations

Protective relay apparatus

Apparatus for protection against subsynchronous currents in a power system

Electronic reverse power relay

Direct transfer trip apparatus for use with an active pilot wire communications channel

Measuring circuit

Technique for extending the range of a signal measuring circuit

Active pilot wire apparatus for electromechanical current differential relays

Closed-loop frequency regulated generator apparatus

ABB POWER T & D CO

Electric power system with remote monitoring and control of protective relays

Phase comparison relaying system with single channel communications link

Electromagnet relay with flux biasing

ELECTRIC POWER RES INST

Current based power supply