20 is shown a car-wiring diagram for alternating- and direct-current unit-switch control, types 255-H and 251-J switch groups, schedule T-l, with four motors. ... The four motors are in series, with all the resistance sections in circuit. Forward Reverse Fornraraa#39; Reverse sil2I ai i i *s s 30 SINGLE-PHASE SPEED CONTROL As60.
|Title||:||Transmission systems for heavy traction ; Types of collectors for heavy traction ; Types of railway motors ; Speed control ; Single-phase speed control ; Electric locomotives ; Operating instructions ; Brakes ; Signal systems|
|Author||:||International Correspondence Schools|