P222505 ZIEHL | Alldatasheet
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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de Phase Monitoring Type PS - Phase Asymmetry - Phase Sequence Technical Data Phase asymmetry Relay Type PS2DK Monitoring of Phase-Asymmetry and Phase Sequence Phase asymmetry relays PS2DK are used for the protection of elec- tric 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 situa- tion in the mains. If a motor, running with 2 phases, creates the 3rd phase, the sensi- tivity 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 Rated supply Voltage Us Admissible tolerance Power consumption Frequency Relay output Type of contact Test conditions rated ambient temperature range Switching point asymmetry Hysteresis Delay at phase-loss (< 240 V) Switch-back delay at voltage recovery Switching-delay at asymmetry Switching point at symmetric decrease of voltage Dimensions (H x W x D) Attachment Protection housing / terminals Weight 3-phase 380-415 V, without neutral +10%...-15% app. 3 VA 50/60 Hz 2 change-over contacts type 2 see "General technical informations" see "General technical informations" -20°C...+55°C adjustable 5...25% app. 2% app. 0,2 s app. 0,5 s adjustable 0,1...5 s not defined Housing K: 75 x 22,5 x 115 mm on 35 mm DIN-rail or with screws M4 (option) IP 30/20 150 g 2015-09-01 Phasenasymmetrierelais PS2DK Part number: P222505