Surge Protection For Business-Critical ContinuityTM Edco™ SRA16C-1 Vehicle Loop Detection The Edco SRA16C-1 is a three terminal device, two of which are connected across the signal inputs of the detector for differential mode protection, and the third is grounded to protect against common mode damage. Differential mode surges (induced voltage across the loop detector input terminals) are instantly clamped by a semiconductor array. 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. The Edco SRA16C-1 is intended for all current detector models on the market. Edco SRA16C-1 General Technical Specifications Features Maximum Operating Voltage 75 VDC Clamping Voltage 90 VDC Peak Surge Current Compatible with Digital Detectors 47-63 Hz SPD Technology 5 Year Warranty GDT Wire Leads, #18 AWG, 8.0”, Minimum Out of Case Operating Temperature Note: The Edco SRA16C-1WLEADS (special order) is installed very similar to the standard unit except the common (bolt) is replaced with a green wire. -40˚C to + 85˚C Dimensions (Inches) Mounting Rugged Gas Tube Protection 10 kA Operating Frequency Connection Type Edco SRA16C-1WLEADS 1”Sq., Ht. 2” Max. No. 10 - 32 x 3/8” Stud, (Standard Model Only) Weight 3 oz. Installation One Edco SRA16C-1 is used for each loop detector to be protected. Units are installed as close as practical to the point where the detector loop wires enter the controller cabinet. Connect one of the flexible leads to each end of the loop. The common (bolt) connection on each Edco SRA16C-1 must be connected to earth ground. Best performance is obtained by (1) shortening the flexible leads as much as possible, and (2) providing the lowest possible impedance to ground. Emerson Network Power. The global leader in enabling Business-Critical ContinuityTM. AC Power Embedded Computing Outside Plant Connectivity Embedded Power Power Switching & Control Services DC Power Monitoring Precision Cooling Surge Protection Emerson Network Power Contact information Racks and Integrated Cabinets www.emersonnetworkpower.com/surge Headquarters Surge Protection 100 Emerson Parkway Binghamton, NY 13905 T: (607) 721-8840 T: (800) 288-6169 F: (607) 722-8713 E: [email protected] IO-50155 5/11 Rev. 0 Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. ©2011 Emerson Electric Co.