Vertical Shaft 25,000-Kv-A., Synchronous Condensers 25-Cycle, 500-rev. per min., Outdoor Type Units for Toronto Leaside Transformer Station

This paper is a description of the 25,000-kv-a., 13,200-volt, 25-cycle, 500-rev. per min., vertical-shaft, outdoor type, self-starting synchronous condensers installed in the Toronto-Leaside Transformer Station, of the Hydro-Electric Power Com-mission of Ontario. Some of the special problems encountered because of the vertical-shaft, outdoor type arrangement are discussed. In the appendix, the automatic starting and stopping sequence is given, with a comparison between the results obtained by using open circuit transition and the results to be expected by using closed circuit transition. The following table of contents explains the plan of presentation followed: 1. Introduction. 2. Mechanical Design. S. Type of Condenser. 4. General Arrangement. 5. Weights and Dimensions. 6. Shipment and Installation. 7. Detail Description¿Stator. 8. Detail Description¿Rotor. 9. Detail Description¿Brackets, Bearings, and Housing. Upper Bracket and Bearings. Thrust Bracket. Thrust Bearing. Exciter Bearing. Speed Relay. Housing. 10. Maintenance. 11. Ventilation. 12. Bearing Protection. 13. Fire Protection. 14. Electrical Protection. 15. Ground Detector. 16. Calculated Electrical Characteristics. 17. Starting and Stopping Procedure. 18. Operation. Appendix.