Descripción

Function Frequency Relay
1- / 3-phase 1
Standard measuring range 1,5 ... 600 Hz
Measuring range max. 600 Hz
Output contacts 2 x 2 w
Auxiliary voltage required +
Enclosure design Schaltschrank
Width 45 mm
Type MH 9837/5_0
According to IEC / EN 60 255, VDE 0435 Teil 303 Monitoring of AC voltage for under and overfrequency,can be used also for pre-warning Separate relay outputs for over- or underfrequency(1 or 2 changeover contacts each) Alternative usage for monitoring of a frequency window Separate adjustment of response value for over- or underfrequencyat 4 ranges each, 1.5 ... 200 Hz or 5 ... 600 Hz Second response value for prewarning possible 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 Programmable hysteresis of response value: 2 ... 10 % Start up time delay programmable via terminals from0 ... 50 s e.g. continuously Manual or auto-reset programmable via terminals Galvanic separation between measuring input, auxiliary voltageand output contacts MH 9837/508: with galvanic separated analogue output (current/voltage) and 11 step LED chain for the actual frequency MH 9837/5_0: with wide input range for auxiliary voltage available(AC/DC 24 ... 60 V or AC/DC 110 ... 230 V) Closed circuit operation (de-energized on trip) LED indication for auxiliary voltage, measuring voltage andalarm status Device available with 2 contactsMK 9837N/5_0: 2 x 1 changeover contactMH 9837/5_0: 2 x 2 changeover contacts orwide auxiliary voltage range 2 possible compact designs:MK 9837N/5_0: Width 22,5 mmMH 9837/5_0: Width 45 mm''