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Mains Frequency Monitor MH 9143

MH9143.png

Features

• According to IEC / EN 60 255, VDE 0435 Teil 303
• Monitoring of 50 - and 60 Hz-current supply on
over- 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 overand
underfrequency (1 or 2 c/o each)
• MK 9143N / MH 9143:
- Trip points adjustable precisely and reproducible on 10 step
rotational switch in the range of ± 0,1 Hz to ± 5 Hz related to
50 or 60 Hz
- Nominal frequency 50 or 60 Hz selectable
- Fixed hysteresis optimised for trip point
- Time delay for over and underfrequency each adjustable
from 0 to 20 s
- As option one common output for under and overfrequency
“Window”-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 separately
adjustable 0 …20%
- Common output for under and overfrequency “Window”-mode
can be selected
• Start up delay 0…30 s selectable
• Manual or auto reset selectable
• Output relay energized or de-energized on trip selectable for
overfrequency
• Output relay de-energized on trip for underfrequency
• Universal frequency measuring input for AC 40 … 550V
• Several options for auxiliary supply
• As option without aux. supply for voltage range AC 18 … 70 V or
70 … 275V
• LED indicators for auxiliary supply, input frequency, over and
under frequency alarm
• 2 possible contact arrangements
MK 9143N and MK 9143N/600: 2 x 1 C/O contacts, width 22,5 mm
MH 9143 and MH 9143/600: 2 x 2 C/O contacts, width 45 mm

• According to IEC / EN 60 255, VDE 0435 Teil 303
• Monitoring of 50 - and 60 Hz-current supply on
over- and underfrequency
• Monitoring of local generator sets and voltage supplies
• For precise frequency measuring with fast response...

more...
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

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Datasheet / Operating Instructions, File: pdf, File size 345 KB

 

 

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