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Phase Sequence Monitor – SF1

R407.68

The SF1 Monitors negative phase sequence (NPS) voltage to detect phase failure, phase reversal and phase imbalance. The NPS voltage of the unit can be djusted from 7-15%. When any of these faults occur the unit will de-energize. The relay will only re-energize if the supply voltage corrects itself. The unit will not react to a balanced voltage variation

 

Features:

 

  • Monitoring relay for 3-phase voltage control
  • Measures if all 3 phases present and in sequence
  • Detection of phase asymmetry
  • Insusceptible to balanced supply voltage variation
  • Insensitiveto regenerated EMF
  • Fastresponse to reverse phase sequence
  • Relay ON LED
  • Output 10A SPDT
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Description

Input Specifications

Input
Pin 5 Phase L1
Pin 6 Phase L2
Pin 7 Phase L3
Voltage interruption < 40ms
Dielectric Voltage None (supply / electronics)
Rated Impulse withstand 4kV (1.2/50ms line/line)

Output Specifications

Output Specifications SPDT
Rated Isolation Voltage 6000 VAC (contact / electric)
1000 VAC (contact / contact)
Nominal Rate in AC1 (AG-Ni) 1500 VA
Rated Current 10A
Rated Voltage 250V
Mechanical Life 10×106 cycles
Electrical Life 10×103 cycles (at max load)
Operation Frequency ≤ 1800 cycles/h

Supply Specifications

Power Suppy AC Type
(Galvanic)		 110, 230, 400V, 525V ±
10% 50 / 60 Hz ± 5Hz
Isolation 4kV
Consumption ± 3VA
±6 VA 525 V

General Specifications

Power ON Delay ≤ 300 ms
Power OFF Delay ≤ 200 ms
Indication for
Output ON LED green
Environment
Degree Of protection IP 20
Operating Temperature -10 to + 50°C
Storage Temperature -50 to + 85°C
Weight 200g

Additional information

Supply Voltage

525Vac, 400Vac, 230Vac, 110Vac

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