Self-switched inductive fault current limiter
Self-trip circuit breaker
Semiconductor electric power conversion system
Semiconductor protection against high energy transients
Sensing amplifier and trip circuit particularly for ground...
Sensitive ground fault detection system for use in...
Sensor for a ground fault circuit interrupter
Separable transient voltage suppression device
Separation of protective and automation functions in a...
Sequence based network protector relay with forward...
Series capacitor equipment
Series capacitor equipment
Series capacitor protection equipment with dual sparkover...
Series capacitor protection equipment with extended range...
Series capacitor protection with gapless arrestor blocks
Series capacitor protective circuit
Series surge suppression structure
Series-parallel electrical circuit
Shock hazard protection system
Shock hazard protection system