Specifications

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Single Quadrant Operation Describes the operation of a variable speed drive that can
provide torque to drive the motor, but cannot provide braking
torque.
Slip The difference between the synchronous speed of a three-phase
induction motor and the rotor speed. Slip is often expressed as a
percentage.
% Slip = x 100
N
S
- N
R
N
S
N
S
= Synchronous Speed
N
R
= Rotor Speed
Solid-State Used to describe equipment that contains semiconductor
devices in an electronic circuit.
Speed-Torque Curve
A graphical representation of the torque provided by a motor
over a range of speeds.
0
Full-Load Torque
Locked Rotor Torque
Pull-up Torque
Breakdown Torque
% Full-Load Torque
% Synchronous Speed
0 10 20 30 40 50 60 70 80 90
100
300
275
250
225
200
175
150
125
100
75
50
25
Slip
Rotor
Speed
Splice Plates, Splice Bars Plates or bars used to join the horizontal bus bars of adjoining
switchboard or motor control center sections.
Shipping Split #1 Shipping Split #2
Horizontal
Bus Bars
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Splice Plates