RI-F22 series
3Pages

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Catalog excerpts

RI-F22 series - 1

RI-F22 series RI-R22 series RI-R38 series INSULATION MONITORING VERSIONS FOR NETWORKS ac MAX 400 V GENERALITA’ MODELS ----------------------------------RI-F22 fixed threshold RI-F22 fixed threshold ----------------------------------RI-R22 adjustable threshold RI-R22 adjustable threshold ----------------------------------RI-R38 adjustable threshold RI-R38 adjustable threshold ----------------------------------- -------------------------------------------------------Vaux: 230 V 50-60 Hz (standard version) Vaux: 110 V 50-60 Hz (optional version) -------------------------------------------------------Vaux: 230 V 50-60 Hz (standard version) Vaux: 110 V 50-60 Hz (optional version) -------------------------------------------------------Vaux: 230 V 50-60 Hz (standard version) Vaux: 110 V 50-60 Hz (optional version) -------------------------------------------------------- These devices allow insulation monitoring on earth of electric networks in alternating 230 V and isolated 400 V (IT systems). Insulation resistance monitoring is carried out applying a measure’s signalling in direct-current between isolated network and earth. Surveying electric leakage set up on earth it’s possible to measure insulation level. Versions with fixed trip threshold are available and they are very cheap. There are also versions with possibility of adjustable calibration of trip threshold. On frontal panel, devices have signal for activity ON, for TRIP (low insulation), a test button, a reset button (only for versions with adjustable threshold) and a potentiometer for setting the threshold of tripping (model RI-R22) or micro switches (model RI-R38). FUNCTIONS AND OPERATORS - LEGENDA 7 INSULATION MONITOR TRIP TEST ---------------------------------------------------------------1 LED ON green active device’s indication ---------------------------------------------------------------2 LED TRIP red signal of trip for low insulation ---------------------------------------------------------------3 TEST button device functioning testing ---------------------------------------------------------------4 RESET button trip signalling reset (manual reset functions) ---------------------------------------------------------------5 micro switches for trip threshold adjusting ---------------------------------------------------------------- ---------------------------------------------------------------1 Potentiometer for adjusting insulation’s resistance (only for model RI-R22) ---------------------------------------------------------------2 Manual resetting button (only for model RI-R22) ---------------------------------------------------------------3 Test button ---------------------------------------------------------------4 Signalling lamp of auxiliary supply (green LED) ---------------------------------------------------------------5 Signalling lamp for relay tripped (red LED) --------------------------------------------------------

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RI-F22 series - 2

RI-F22 series RI-R22 series RI-R38 series INSULATION MONITORING ELECTRIC CHARACTERISTICS 230 V 50-60 Hz ± 20 % standard 110 V 50-60 Hz ± 20 % optional 3 VA MAX RI-F22 / RI-R22 24 ÷ 230 Vac +10 % (400 V on 3 phase network with neutral) RI-R38 24 ÷ 440 Vac +10 % (760 V on 3 phase network with neutral) Auxiliary supply voltage Self-consumption Network voltage RI-F22 / RI-R22 12 V MAX RI-R38 24 V MAX RI-F22 / RI-R22 0.1 mA MAX RI-R38 0.5 mA MAX RI-F22 / RI-R22 100 kohm RI-R38 250 kohm RI-F22 fixed 100 kohm RI-R22 adjustable 25 ÷ 100 kohm (by potentiometer) RI-R38 adjustable 10 ÷ 150 kohm (4...

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RI-F22 series - 3

RI-F22 series RI-R22 series RI-R38 series INSULATION MONITORING WIRING DIAGRAMS - LEGENDA OUT-NC OUT-C OUT-NO PE RESET OUT-NC OUT-C OUT-NO RI-F22 / RI-R22 -------------------------------------------------------------------------AUXILIARY SUPPLY - terminals 1-3 auxiliary supply available from under-control network -------------------------------------------------------------------------INSULATION MONITORING - terminals 4-9 the two terminals have to be connected between under-control network and measure’s referring earth (max. applicable voltage between these terminals is 230 V, so it’s...

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