Dold MK9143N Frequency Monitoring Relay With 2 x 1CO Contacts, 24 V dc

  • RS Stock No. 181-2793
  • Mfr. Part No. MK9143N.38 +/-5Hz UH=DC24V tv=0-20s tan=0-30s
  • Brand Dold
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): DE
Product Details

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 over-
and under frequency (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
As option one common output for under and over frequency “Window”-mode (MK 9143N/400 / MH 9143/400)
Variable alarm value in the range of 45 to 65 Hz
Hysteresis adjustable for under- and over frequency separatelyadjustable 0 …20% Common output for under and over frequency “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
over frequency
Output relay de-energized on trip for under frequency
Universal frequency measuring input for AC 40 … 550V
Several options for auxiliary supply
LED indicators for auxiliary supply, input frequency, over and
under frequency alarm

Specifications
Attribute Value
Monitoring Application Frequency
Supply Voltage 24 V dc
Contact Configuration 2 x 1CO
Time Delay 0 → 20 s, 0 → 30 s
Frequency Sensing Range ±5 Hz
Mounting Type DIN Rail
Maximum Frequency Sensed +5Hz
Width 97mm
Minimum Frequency Sensed -5Hz
Terminal Type Screw
Length 22.5mm
Frequency Sensitivity Overfrequency, Underfrequency
Minimum Operating Temperature -20°C
Dimensions 22.5 x 97 x 90 mm
Height 90mm
Maximum Operating Temperature +60°C
Operating Temperature Range -20 → +60 °C
Series MK9143N
3 In stock for delivery within 1 working days
Price Each
£ 156.05
(exc. VAT)
£ 187.26
(inc. VAT)
Units
Per unit
1 +
£156.05
Not available for guaranteed pre 9am/10am delivery
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