TRANSISTORIZED PHASE COMPARISON PILOT RELAY - TYPE SLD USING CS26 CARRIER PILOT
SLD51C Single Phase Comparison Relay
SLD Static Phase Comparison Relay
STATIC PHASE COMPARISON RELAY - TYPE SLD USING CS26B CARRIER
SLD42H Static Phase Comparison Relay
STATIC PHASE COMPARISON RELAY - TYPE SLD51A
SLD51A Static Phase Comparison Relay
Type SLD41A Relay
PHASE COMPARISON RELAY - TYPES SLD42D1 SLD42D2