Slip The difference between the synchronous speed three-
phase induction motor and the rotor speed.
Shipping Split Shipping Split #2
Horizontal
Bus Bars
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Splice Plates
.34
Single Quadrant Operation Describes the operation variable speed drive that can
provide torque drive the motor, but cannot provide braking
torque.
% Slip 100
NS
- NR
NS
NS
= Synchronous Speed
NR
= Rotor Speed
Solid-State Used describe equipment that contains semiconductor
devices electronic circuit. Slip often
expressed percentage.
Speed-Torque Curve graphical representation the torque provided motor
over range speeds.
0
Full-Load Torque
Locked Rotor Torque
Pull-up Torque
Breakdown Torque
%
Full-Load
Torque
% Synchronous Speed
0 100
300
275
250
225
200
175
150
125
100
75
50
25 Slip
Rotor
Speed
Splice Plates, Splice Bars Plates bars used join the horizontal bus bars adjoining
switchboard motor control center sections
