8502SCO2V02S SQUARE D, 8502SCO2V02S Datasheet - Page 41

• Manufacturer Part Number: 8502SCO2V02S
• Description: CONTACTOR, 3PST, 120VAC, 27A, PANEL
• Manufacturer: SQUARE D

Specifications of 8502SCO2V02S

• No. Of Poles: 3
• Contact Configuration: 3PST
• Relay Mounting: Panel
• Coil Voltage Vac Nom: 120V
• Relay Terminals: Wire Leaded
• Contact Voltage Ac Nom: 600V
• Contact Current Max: 27A
• Current, Rating: 27 A
• Enclosure Type: Open
• Horse Power Rating: 7.5 @ 230 VAC, 10 @ 480 VAC
• Relay Type: Contactor
• Standards: UL Listed File E78351 CCN NLDX - CSA Certified File LR60905 Class 3211 04
• Termination: Screw Clamp
• Voltage, Coil: 120 VAC
• Voltage, Rating: 600 VAC
• Operating Voltage: 600VAC
• Switching Power Ac3: 10hp
• Switching Current Ac3: 27A
• Load Current Inductive: 27A
• Load Current Resistive: 27A
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

40
Application Data – Class 8810, 8811, 8812
Typical Schematic Diagrams
L1
L2
L3
2-Speed Consequent Pole Constant Horsepower
NEMA Size 0-4
Sizes 5, 6 & 7 Use Special Circuitry
L1
L2
L3
2-Speed Consequent Pole Constant or Variable Torque
NEMA Size 0-4
Sizes 5, 6 & 7 Use Special Circuitry
2-Speed Separate Winding Constant HP, Constant Torque
and Variable Torque NEMA Size 0-4
Sizes 5, 6 & 7 Use Special Circuitry
L1
L2
L3
1
1
1
Stop
Stop
Stop
T1 T2
T1
T1 T2
L
L
L
OL OL OL
OL OL OL
OL OL OL
H
High 4
High 4
High 4 Low 5 H
A30064-446
T2
A30064-442
L
L
L
H
2
2
2
T3
T3
T3
L
Low
L
Low
L
L
H
H
L
High
H
High
L
High
T11 T12 T13
T6 T4
T6
3 L
5 H
3 L
5 H
3 L
H
H
H
OL OL OL
OL OL OL
OL OL
L
T4
H
H
H
L
H
H
H
L
L
L
T5
T5
H
H
H
OL
OL OL
OL OL
OL OL
© 1998 Square D All Rights Reserved
Multispeed motors are available in two basic versions:
• Consequent pole
• Separate winding
A separate winding motor has a winding for each speed while a consequent
pole motor has a winding for every two speeds (three speed motors have two
windings). The motor connections (and thus the types of controllers) for two
speed starters are exemplified by the schematic diagrams shown to the left.
Note that consequent pole two speed controllers involve a 5-pole and a
3-pole starter while separate winding controllers have two 3-pole starters.
Separate winding motors are usually chosen when flexibility is important,
since the speeds of a consequent pole motor are usually limited to a 2/1 ratio;
a broad range of speeds can be obtained on a separate winding motor.
Both consequent pole and separate winding motors are available in three types:
• Constant horsepower
• Constant torque
• Variable torque
Typical applications for these different types of motors are shown below.
NOTE: For detailed information involving the technical aspects of flexibility of
the starters used in the multispeed controllers, see Classes 8702, 8736 and
8810 application data.
Typical Applications
Constant H.P.
Constant Torque
Variable Torque
Speed Selection
The speed of a squirrel cage motor is directly proportional to the power
supply frequency and inversely proportional to the number of poles in the
stator winding. With the frequency constant, motor speed is determined by
the number of poles.
(RPM) Speed =
Horsepower =
• Spindles
• Cutting Tools
• Conveyors
• Mills
• Dough Mixers
• Reciprocating Pumps
•
•
— Lathes
— Saws
Fans
Centrifugal Pumps
T x S Where:
5250
(120) (Frequency)
No. of Poles
T = Torque in Lb Ft
S = Speed in RPM
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