RI-F48 | RI-R48 | RI-R48N
2Pages

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Catalog excerpts

RI-F48 | RI-R48 | RI-R48N - 1

IT NETWORKS INSULATION CONTROL 24-48 VAC/DC General Characteristics These devices allows the insulation monitoring to earth of electric networks in alternate and direct current 24-48 VAC/DC isolated (IT systems). These devices measure the potential variation of two polarity on earth reference, to signal when the insulation decreasing under a fixed value. Auxiliary supply is taken from under-control network. On the frontal panel there is the signaling of device ON, a TEST and a RESET (versions RI-R48 and RI-R48N) pushbuttons and LEDs to the signaling of tripping (TRIP) and to indicate the polarity (version RI-R48N) of the line under control that has low insulation. The TRIP threshold is regulated by micro-switches (versions RI-R48 and RI-R48N). It’s available a changeover contact relay to use the low insulation signaling in a remote panel. IIII Features INSULATION MONITORING OF IT SYSTEMS 24-48 VAC/DC TRIP MANUAL RESET (VERSIONS RI-R48 AND RI-R48N) LOW INSULATION LED DAMAGED POLE LED (VERSION RI-R48N) TEST PUSHBUTTON TRIP THRESHOLD SETTING (VERSIONS RI-R48 AND RI-R48N) Technical characteristics Controlled network voltage Max relay contact capacity Power consumption Operating temperature ALARM threshold setting Storage temperature TRIP threshold setting 10÷60 kΩ (version RI-R48 and version RI-R48N) 100kΩ (version RI-F48) Relative humidity Tripping delay Protection degree Insulation test Internal impedance TRIP Relay number NO-C-NC ALARM Relay number NO-C-NC CONTROLLED NETWORK VOLTAGE TRIP threshold fixed 100kΩ TRIP threshold adjustment TRIP threshold adjustment Damaged pole LED IT networks insulation control 24-48 VAC/DC IT networks insulation control 24-48 VAC/DC IT networks insulation control 24-48 VAC/DC ORDER CODE INSULATION MONITOR

Open the catalog to page 1
RI-F48 | RI-R48 | RI-R48N - 2

IT NETWORKS INSULATION CONTROL 24-48 VAC/DC NE TRIP THRESHOLD ADJUSTMENT INDICATION OF FUNCTIONING INSTRUMENT INDICATION OF FUNCTIONING INSTRUMENT RESET PUSHBUTTON RESET PUSHBUTTON TRIP LED TEST PUSHBUTTON DAMAGED POLE LED TEST PUSHBUTTON INDICATION OF FUNCTIONING INSTRUMENT TEST PUSHBUTTON TRIP THRESHOLD SETTING Wiring diagrams OUT-NC OUT-C OUT-NC OUT-NC OUT-C OUT-NC RES+ RESET INSULATED NETWORK 24-48 V ac/dc INSULATED NETWORK 24-48 V ca/cc INSULATION MONITORING DEVICES

Open the catalog to page 2

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