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Manufacturer: ZIEHL

PS2DK - Phase-Asymmetry Relay - P227105

  • P227105
  • Product Type IP00 motor, IP20 electronics
  • Supply voltage Prąd 3-fazowy, AC 380 - 415 V
  • Execution Motor IP44, electronics IP20 / depending on mounting and position
  • Additional information Die-cast aluminum
  • Certificate IP 30 (IP 44, with bracket and cover)
  • Output function Outputs/Relays
  • Measured value Partial impedance protection

Phase asymmetry relays PS2DK are used for the protection of electric motors against asymmetries in the 3-phase mains without neutral and for monitoring the phase-sequence.

The switching-point is adjustable and can be adapted to the situation in the mains. If a motor, running with 2 phases, creates the 3rd phase, the sensitivity can be increased. With mains with high harmonics it can be necessary to reduce the sensitivity.

When the sensitivity is reduced to minimum (25% = potentiometer turned fully right), the device works as a phase-sequence relay. It trips only at wrong phase sequence or missing phase.

If there is a wrong phase-sequence when switching on the device, the relay does not pick up.

  • Monitoring of phase-asymmetry
  • Monitoring of phase-sequence
  • Adjustable sensitivity 5…25 %
  • Output-relay with 2 change-over contacts
  • Switching delay adjustable 0.1 … 5 s
  • LED for display state of operation

Changes from P222505 to P227105: Version with spring terminals RoHS/REACH compliant
Further information can be found in our customer information: "New terminals for K-type devices"

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  • Product Type IP00 motor, IP20 electronics
  • Supply voltage Prąd 3-fazowy, AC 380 - 415 V
  • Execution Motor IP44, electronics IP20 / depending on mounting and position
  • Additional information Die-cast aluminum
  • Certificate IP 30 (IP 44, with bracket and cover)
  • Output function Outputs/Relays
  • Measured value Partial impedance protection

Phase asymmetry relays PS2DK are used for the protection of electric motors against asymmetries in the 3-phase mains without neutral and for monitoring the phase-sequence.

The switching-point is adjustable and can be adapted to the situation in the mains. If a motor, running with 2 phases, creates the 3rd phase, the sensitivity can be increased. With mains with high harmonics it can be necessary to reduce the sensitivity.

When the sensitivity is reduced to minimum (25% = potentiometer turned fully right), the device works as a phase-sequence relay. It trips only at wrong phase sequence or missing phase.

If there is a wrong phase-sequence when switching on the device, the relay does not pick up.

  • Monitoring of phase-asymmetry
  • Monitoring of phase-sequence
  • Adjustable sensitivity 5…25 %
  • Output-relay with 2 change-over contacts
  • Switching delay adjustable 0.1 … 5 s
  • LED for display state of operation

Changes from P222505 to P227105: Version with spring terminals RoHS/REACH compliant
Further information can be found in our customer information: "New terminals for K-type devices"

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