Описание

Function Mains Frequency Monitor
1- / 3-phase 1
Standard measuring range 50, 60 Hz
Measuring range max. 50/60 Hz
Output contacts 2 x 2 w
Operate delay +
Auxiliary voltage required +
Enclosure design Schaltschrank
Width 45 mm
Type MH 9143
According to IEC / EN 60 255, VDE 0435 Teil 303 Monitoring of 50 - and 60 Hz-current supply onover- and underfrequency Monitoring of local generator sets and voltage supplies For precise frequency measuring with fast response time High disturbance immunity Separately adjustable trip points and separate outputs for overandunderfrequency (1 or 2 c/o each) MK 9143N / MH 9143:- Trip points adjustable precisely and reproducible on 10 steprotational switch in the range of ± 0,1 Hz to ± 5 Hz related to50 or 60 Hz- Nominal frequency 50 or 60 Hz selectable- Fixed hysteresis optimised for trip point- Time delay for over and underfrequency each adjustablefrom 0 to 20 s- As option one common output for under and overfrequency&ldquo,Window&rdquo,-mode (MK 9143N/400 / MH 9143/400) MH 9143.38/008: with galvanic separated analogue output (current/voltage) and 11 step LED chain for the actual frequency MK 9143N/600 / MH 9143/600:- Variable alarm value in the range of 45 to 65 Hz- Hysteresis adjustable for under- and overfrequency separatelyadjustable 0 &hellip,20%- Common output for under and overfrequency &ldquo,Window&rdquo,-modecan be selected Start up delay 0&hellip,30 s selectable Manual or auto reset selectable Output relay energized or de-energized on trip selectable foroverfrequency Output relay de-energized on trip for underfrequency Universal frequency measuring input for AC 40 &hellip, 550V Several options for auxiliary supply As option without aux. supply for voltage range AC 18 &hellip, 70 V or70 &hellip, 275V LED indicators for auxiliary supply, input frequency, over andunder frequency alarm 2 possible contact arrangementsMK 9143N and MK 9143N/600: 2 x 1 C/O contacts, width 22,5 mmMH 9143 and MH 9143/600: 2 x 2 C/O contacts, width 45 mm''