May n 5 p 20-21: Discussion of electrical and mechanical interlocking applied to motor starters and controllers to provide safety for operator and protection for control elements, motor, and driven machine. June n 6 p 24-25: Circuit interlocking applying to two-speed motor controller with compelling relay and d-c general purpose motor applications described.
Reliable interlocking
Elec Contracting
Electrical Contracting ; 41 , n 5-6
1942
Article (Journal)
English
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A Reliable Low-Cost Interlocking System for Regional Railway Lines
Springer Verlag | 2023
|Engineering Index Backfile | 1931
Engineering Index Backfile | 1930
Engineering Index Backfile | 1930