Mains Frequency Monitor MH 9143

Numero Ordine: 0060945
Type: MH9143.38 +/-5Hz UH AC/DC110-230V

The MK 9143N and MH 9143 mains frequency monitors are used to monitor the frequency of 50 and... altro

Descrizione del prodotto

The MK 9143N and MH 9143 mains frequency monitors are used to monitor the frequency of 50 and 60 Hz power supplies for over- and underfrequency. They are used for monitoring self-generating systems and local power supplies, as well as for monitoring generators, power units, etc.

Specifiche tecniche

Measuring range max.:	50/60 Hz
Standard measuring range:	50/60 Hz
1- / 3-phase:	1
Operate delay:	Yes
Output contacts:	2 x 2 C/O contacts
Width:	45 mm
Enclosure design:	Switch cabinet
Auxiliary voltage required:	Yes
Type:	MH 9143

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Vorteile / Kundennutzen

Monitoring of 50 - and 60 Hz-current supply on over- and underfrequency
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)

Merkmale

According to IEC / EN 60255-1
Monitoring of local generator sets and voltage supplies
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 … 550 V
Several options for auxiliary supply
As option without aux. supply for voltage range AC 18 … 70 V or 70 … 275 V
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