Lovato electric: protection relays

Legrand

Lovato electric: protection relays

Published: 23 May 2013 · Category: Product Catalogues

From this document

Pages 17-4 to 8 VOLTAGE MONITORING RELAYS For three-phase systems without neutral, three-phase systems with or without neutral and single-phase systems Minimum and maximum AC voltage Phase loss and incorrect phase sequence Asymmetry Minimum and maximum frequency. Page 17-10 PUMP PROTECTION RELAYS For single and three-phase systems Minimum cosj for dry running protection Maximum AC current Phase loss and incorrect phase sequence. Page 17-12 FREQUENCY MONITORING RELAYS For single and three-phase systems Minimum frequency Maximum frequency. Pages 17-8 and 9 CURRENT MONITORING RELAYS For single-phase systems Maximum AC/DC current Minimum or maximum AC/DC current Minimum and maximum AC/DC current. Page 17-11 PHASE SHIFT MONITORING RELAYS For single and three-phase systems Minimum cosj Maximum cosj. Page 17-13 VOLTAGE-FREQUENCY MONITORING RELAY Minimum and maximum voltage Minimum and maximum frequency ROCOF (Rate Of Change Of Frequency). 17 PROTECTION RELAYS Modular version for switchgear panels, suitable also for rear mounting plate fixing Minimum and maximum voltage monitoring relays for single and three-phase systems, with or without neutral Voltage asymmetry, phase sequence and phase loss control relays Minimum and maximum current monitoring relays Frequency monitoring relay Voltage and frequency control relay. Modular voltage monitoring relays For three-phase systems, without neutral...