PS2DK, Phase Relay AC 380-415 V, Phase symmetry / Phase sequence

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- Part number: P222505
Phase-Asymmetry Relay for monitoring of Phase-Asymmetry and Phase Sequence
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 phasesequence 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
Technical Data
Rated supply Voltage Us
.......
3-phase 380-415 V, without neutral
Admissible tolerance
.......
+10%...-15%
Power consumption
.......
app. 3 VA
Frequency
.......
50/60 Hz
Relay output
.......
2 change-over contacts
Type of contact
.......
type 2 see General technical informations
Test conditions
.......
see General technical informations
rated ambient temperature range
.......
-20°C...+55°C
Switching point asymmetry
.......
adjustable 5...25%
Hysteresis
.......
app. 2%
Delay at phase-loss (< 240 V)
.......
app. 0,2 s
Switch-back delay at voltage recovery
.......
app. 0,5 s
Switching-delay at asymmetry
.......
adjustable0,1...5 s
Switching point at symmetric decrease of voltage
.......
not defined
Dimensions (H x W x D)
.......
Housing K: 75 x 22,5 x 115 mm
Attachment
.......
on 35 mm DIN-rail or with screws M4 (option)
Protection housing / terminals
.......
IP 30/20
Weight
.......
150 g
Input / measuered parameter: | Phase |
Outputs: | Alarms/relays |
Design: | Mount in switchgear cabinet |
Extras: | Monitoring od phase sequence, Monitoring os symmetry of phases |
Applications: | Protection of motors, Protection of pumps |