Catalog excerpts
ISOMETER® IR123P Insulation monitoring device for mobile generators Preliminary datasheet
Open the catalog to page 1Device features • Insulation monitoring for unearthed DC systems (IT systems) 100...300 V • Automatic adaptation to the existing system leakage capacitance • Optimised measurement technique for low-frequency control processes • Electrically isolated PWM output for the kQ measuring value • Optocoupler output for signalling the device status • Automatic device self test _ Zh BENDER Insulation monitoring device for mobile generators Product description The ISOMETER'* IR123P monitors the insulation resistance /?p of an unearthed AC system of 100...300 V against earth, that is supplied by a...
Open the catalog to page 21 - Input for reset button "R" (N/O contact) 6 - igital output optocoupler "OK+": Alarm 2; D Connect external operating voltage UB: max. +24 V 2 - Input for test button "T" (N/O contact) 7 - ulse-width-modulated output optocoupler "M+": measured value P Connect external operating voltage UB: max. +24 V 3 - Common input for test and reset button "T/R" 4 - Connect the leads E and KE separately to PE 8 - Common reference point -UB "OK-, M-" for OK+ and M+ 5 - Supply voltage US = Un Connection to the IT system to be monitored 9 - Alarm relay "K1" 10 - Alarm relay "K2" Application example with...
Open the catalog to page 3Technical data Interfaces Rated insulation voltage 250 V Rated impulse voltage/pollution degree 2.5 kV/3 Protective separation (reinforced insulation) between: Optocoupler, alarm UCE 24 V, IC 10 mA Optocoupler, measured value UCE ≤ DC 24 V, IC ≤ 10 mA PWM signal, duty cycle 0 % = ∞ kΩ PWM signal, duty cycle 50 % = 120 kΩ PWM signal, duty cycle 100 % = 0 kΩ Contact data acc. to IEC 60947-5-1: Rated operational voltage AC 230 V 230 V Utilisation category AC AC 13 AC 14 Rated operational current AC 5 A 3A Rated operational voltage DC 220 V 110 V 24 V Utilisation category DC DC 12 DC 12 DC 12...
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