D-C magnetic crane hoist control for A-C powered cranes

Author(s): A. H. Myles ; M. C. Davies ; L. J. Srnka
Publisher: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 1 July 1960
Volume: 79
Page(s): 207 - 211
ISSN (Paper): 0097-2452
DOI: 10.1109/TCE.1960.6368574



The use of a d-c series-wound motor, series-wound motor brake, and power-type overhoist limit switch for the hoist drive of an otherwise all a-c powered crane is highly desirable. Time proven safety and simplicity of d-c dynamic lowering hoist systems can now be further improved in performance, and better motor stability is possible when d-c power is made available through metallic plate rectifiers.