SW31K ZIEHL | Alldatasheet
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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de Voltage Monitoring Type SW Voltage Monitor for 3-Phase Networks Undervoltage upon request 50/60 Hz 1 change-over contact (co) Type 2 see "general technical information" see "general technical information" -20°C...+55°C app. 10% U Nenn app. 1 s Design K: 75 x 22 x 115 mm IP 30 / IP 20 app.135 g Rated supply voltage U s other Voltages Frequency Relay-Output Type of Contact Testing Conditions Rated ambient Temp. Range Hysteresis Switching delay Dimensions (H x W x D) mm Protection Housing/Terminals Weight Technical Data Undervoltage monitor for three- phase networks without N for monitoring on voltage failure. The voltage is being measured between phases and an artificial neutral point. At symmetrical decrease of the voltage to approx. 50% of the nominal value or in case of failure of a phase the integrated relay (1 change-over contact) releases with a delay of approx. 1s. With engines running- on on 2 phases, so much back voltage can be produced that the failure of a phase may be not detected. The SW31K is available for measuring voltages AC 400 V and AC 690 V. As supply voltage in the standard version AC 230 V is needed. Application: Monitoring of three-phase networks on loss of a phase monitoring of fuses 2015-12-14 SW31K Part numbers: S222272 AC 400 V S222271 AC 690 V Special Versions upon request 11220-1202-00 Unterspannungswächter SW31K S222272 AC 220- 240 V 50-60 Hz < 2VA A2A1 L2L1 L3 181615 U ≥1 UM 3 ~ 400 VAC 50% .com Made in Germany 2 L1 2 N AC 230 V 50 Hz SIGNAL ON ALARM T 4 A (gL) 1 L1 1 L3