Distribution Automation Handbook

ABB

Distribution Automation Handbook

Publicado: 3 de abril de 2023 · Categoria: Cadernos técnicos

Deste documento

Distribution Automation Handbook Section 8.11 Motor Protection Distribution Automation Handbook (prototype) 1MRS757291 Power System Protection 8.11, Motor Protection 2 Contents 8.11 Motor Protection............................................................................................................................ 3 8.11.1 Introduction .............................................................................................................................. 3 8.11.2 Thermal Behavior and Thermal Protection .............................................................................. 3 8.11.2.1 8.11.2.2 8.11.2.3 8.11.2.4 8.11.2.5 8.11.3 Protection against External Network Disturbances ............................................................... 12 8.11.3.1 8.11.3.2 8.11.3.3 8.11.4 STATOR EARTH-FAULT PROTECTION .................................................................................................................................. 15 SHORT CIRCUIT AND INTER-WINDING FAULT PROTECTION ................................................................................................. 16 Additional Protection Functions for Synchronous Motors ..................................................... 16 8.11.5.1 8.11.5.2 8.11.5.3 8.11.5.4 8.11.6 UNBALANCE PROTECTION .................................................................................................................................................. 12 VARIATION IN SUPPLY VOLTAGE AND FREQUENCY...