Adjustable speed drive reference guide.
Contributors: Okrasa, Richard.; Ryan, Maura C.; Ontario Hydro.
Edition: 4th ed. / revised by Richard Okrasa.
Series: In-house energy efficiency
Publisher: Ontario Hydro
Published: 1997
Place of publication: [Toronto]
Language: eng
Number of pages: 101
Subjects: Electric machinery.; Variable speed drives.; Electric motors -- Energy conservation.; Electric motors.
Notes: Previous editions written by Maura C. Ryan.

Includes bibliographical references and index.