tef.eu ‑ globalfire.pt Manufacturers of Fire Detection Equipment TEF‑GFE ‑ 2023 GFE‑AD‑ISO Standalone Loop Isolator The GFE‑AD‑ISO is a standalone negative switching loop isolator, designed to isolate short circuits on the addressable detection loop of a Global Fire Equipment JUNO NET or JUNIOR control panel. Up to 32 detection devices may be connected between two isolators as per EN54. The GFE‑AD‑ISO is loop powered and polarity sensitive and care must be taken to follow the indications on the PCB. Also as two LEDs are fitted to facilitate “Loop in” and “Loop out” identification a consistent approach should be taken to wiring the isolator in this respect. TECHNICAL SPECIFICATIONS ORDER CODE LOOP OPERATING VOLTAGE LOOP CURRENT - QUIESCENT LOOP CURRENT - ISOLATED LED ON MAXIMUM SERIES IMPEDANCE (Zcmax) MAX LEAKAGE CURRENT (iLmax) MAX RATED SWITCHING CURRENT (ls max) MAX. CABLE SIZE OPERATING TEMPERATURE MAX. HUMIDITY ENCLOSURE / MATERIAL DIMENSIONS WEIGHT GFE-AD-ISO STANDALONE LOOP ISOLATOR 17 V to 40 V 0.25 mA @ 28 V DC nominal 6.2 mA @ 28 V DC nominal 28 mOhm 2.7 mA 1 A 2.5 mm² -10ºC to 50ºC 95% RH Non-Condensing White or Red / ABS 100 (D) x 48 (H) mm 105 g - 142 g including packaging 1328-CPR-0538
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