Power Automation Sweden AB

Cylindervägen 8
13152 Nacka Strand
Sweden
MK 9143N

Mains Frequency Monitor

MK 9143N

Contacts

Auxiliary voltage

Start up delay

Response value

Alarm delay

Variant

  • 0060936
  • MK9143N.38 +/-5Hz UH AC230V
Monitoring of local generator sets and voltage supplies. more

Product description

Monitoring of local generator sets and voltage supplies.

Technical specifications

Enclosure design: Switch cabinet
Width: 22,5 mm
Operate delay: Yes
1- / 3-phase: 1
Auxiliary voltage required: Yes
Output contacts: 2 x 1 C/O contacts
Standard measuring range: 50/60 Hz
Measuring range max.: 50/60 Hz
Type: MK 9143N

Features

  • According to IEC / EN 60 255-1
  • 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