La description

Function Frequency Relay
1- / 3-phase 1
Standard measuring range 1,5 ... 600 Hz
Measuring range max. 600 Hz
Output contacts 2 w
Auxiliary voltage required +
Enclosure design Schaltschrank
Width 22,5 mm
Type MK 9837N
According to IEC / EN 60 255, VDE 0435 part 303 Detection of over- or underfrequency of alternating voltage(adjustable function) Fast reaction time by measuring duration of cycle of input frequency Universal measuring input for AC-voltages of 15 ... 280 Vas well as 30 ... 550 V As option with measuring input for inverters 4 ranges adjustable response value 1,5 ... 200 Hz or 5 ... 600 Hz Adjustable hysteresis Adjustable start up time delay 0 ... 50 s at function underfrequency Adjustable monitoring time for missing input signal at functionoverfrequency Response delay programmable via terminals 0 ... 100 s Alarm storing or auto-reset programmable via terminals Galvanic separation between measuring input, auxiliary voltageand output contacts MH 9837 available with wide input range for auxiliary supply(AC/DC 24 ... 60 V or AC/DC 110 ... 230 V) 2 changeover contacts, closed circuit operation Open circuit operation on request LED indication for auxiliary voltage, measuring voltage andalarm status MH 9837.12/008: with galvanic separated analogue output (current/voltage) and 11 step LED chain for the actual frequency Device available with 2 response values and seperately controlledoutputrelays for under- and overfrequency see MK 9837N/500 2 possible compact designs:MK 9837N: Width 22,5 mmMH 9837: Width 45 mm''