| Review: |
Switchgear is used: to isolate faulty equipment; to divide large networks into sections for repair purposes; to reconfigure networks to restore power; and to control other equipment. Here Stan Stewart, with nearly 50 year’ involvement in switchgear, describes the basic and general principles of switchgear function, and discusses topics such as interruption techniques, fault-level calculation; electromagnetic forces and contact design; insulation; operating mechanisms; primary and secondary switchgear; high-voltage fuse-links; switchgear type tests; production conformity and quality control; and the total cost of ownership. There is also a measured prediction of the future of switchgear. |