Edco SRA16C-1 Vehicle Loop Detector TVSS Surge Protection for Traffic Signaling.
SRA16C-1 Surge Protector.
The Emerson Edco SRA16C-1 Vehicle Loop Detector traffic signaling TVSS surge protection. Differential mode surges (induced voltage across the loop detector input terminals) are clamped by a semiconductor array instantly. The array is designed to appear as very low capacitance to the detector. Common mode surges (induced voltage between the loop leads & ground) are handled by a rugged three-element gas discharge tube which operates (fires) at 90 VDC and thereafter clamps the two loop leads to 30 volts in respect to ground. This design eliminates any ground noise from entering the loop detector and being amplified.
Traffic Loop Protection PDF