Application Data

Class 8810 / Refer to Catalog 8502CT9701

Multispeed Magnetic Starters Application Data

Typical Applications

Constant Hp

Constant Torque

Variable Torque

A. Spindles
B. Cutting Tools
    1. Lathes
    2. Saws

A. Conveyors
B. Mills
C. Dough Mixers
D. Reciprocating Pumps

A. Fans
B. Centrifugal Pumps

Multispeed motors are available in two basic versions:
1) separate winding, and 2) consequent pole. 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 in Typical Schematic Diagrams. 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.

Verify the type of motor before ordering. Field modification of starters to match the motor may not
be possible.

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 separate winding and consequent pole motors are available in three types: 1) constant horsepower, 2) constant torque, and 3) variable torque. Typical Applications shows typical applications for these different types of motors.

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 Schematic Diagrams

2-Speed
Consequent Pole
Constant Horsepower
NEMA Size 0–4Sizes 5, 6, & 7
Use Special Circuitry

2-Speed
Consequent Pole
Constant or Variable Torque
NEMA Size 0–4Sizes 5, 6, & 7
Use Special Circuitry

2-Speed
Separate Winding
Constant Hp, Constant Torqueand Variable Torque
NEMA Size 0–4Sizes 5, 6, & 7
Use Special Circuitry

Additional Features—Special Relays for Non-Reversing and Reversing Multispeed Starters

General. Some applications require special relays to control the speed change and/or starting of the motor.
The descriptions that follow cover the four common relay schemes for these applications.

Form R1 Compelling Relay. This relay requires the motor to be started at low speed before any higher speed can be selected. This arrangement ensures that the motor will always start the load at low speed. The stop button must be pressed before it is possible to change from a higher to a lower speed. (Not available with Form R2.)

Form R2 Accelerating Relay/Timer. With Form R2 accelerating relays, the ultimate speed is determined by the button which is pressed, but the starter will start the motor at low speed and automatically accelerate it through successive steps until the selected speed is reached. Definite time intervals must elapse between each speed change. Individual adjustable timing relays are provided for each interval.

The stop button must be pressed before it is possible to change from a higher to a lower speed.
(Not available with Form R1.)

Form R3 Decelerating Relay/Timer. This is similar in action to Form R2 accelerating relays, except that they function to prevent immediate transfer from a higher to a lower speed. A definite time interval, preset on the timer, must elapse between each speed change.

Form R10 Antiplugging Relays/Timers. This Form imposes a time delay when transferring from the forward to the reverse direction or reverse to forward, for reversing multispeed starters. This provides up to a 60 second delay in the transfer of the direction of the motor, and can help prevent damage which could result from plugging.

Form Y81 (Low Speed) Overload Relay Modification.
For NEMA size 3 and 4, when the low speed full load current does not appear on the appropriate thermal unit selection tables, include Form Y81 (low speed) (no charge for this Form). This Form modifies the overload relay block to accept Type B thermal units. For assistance on thermal unit selection, contact the Customer Care Center (CCC) at 1-888-778-2733.

Special Pilot Lighting

 

One pilot light On

One pilot light Off

Two pilot lights

L and H

Two pilot lights

On and Off

Three pilot lights

L,H, and Off

L, H and Off

3-Pole Polyphase, 600 Vac Maximum, 50–60 Hz

Multispeed motors are available in two basic versions: 1) consequent pole, and 2) 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).

Devices require 6 thermal units (Sizes 0–6). See Digest Section 16 for selection information.

Class 8810—Non-Combination Type

Type of
Motor

NEMA
Size

Maximum Polyphase Horsepower Ratings

NEMA 1 General Purpose Enclosure

NEMA 4 & 4X Watertight and Dusttight Enclosure (Stainless Steel) (304) (Sizes 0—5) Sheet Steel (Size 6)

NEMA 4X  [1] Watertight, Dusttight and Corrosion Resistant Enclosure

NEMA 12 /3R [2]Dusttight and Driptight Industrial Use Enclosure

Open Type

Constant
Horsepower
Motors

Constant Torque or
Variable Torque Motors

200 V

230 V

460–
575 V

200 V

230 V

460–
575 V

Type [3]

Type [3]

Type [3]

Type [3]

Type [3]

Single Winding (Consequent Pole) 5-Pole–3-Pole

Constant
Hp

0
1
2
3
4
5
6

2
5
7-1/2
20
30
60
100

2
5
10
25
40
75
150

3
7-1/2
20
40
75
150
300



















SBG1●●●

SCG1●●●

SDG1●●●

SEG1●●●

SFG1●●●

SGG1●●●

SHG1●●●

SBW1●●●

SCW1●●●

SDW1●●●

SEW1●●●

SFW1●●●

SGW1●●●

SHW1●●●

SBW51●●●

SCW51●●●

SDW51●●●

SBA1●●●

SCA1●●●

SDA1●●●

SEA1●●●

SFA1●●●

SGA1●●●

SHA1●●●

SBO1●●●

SCO1●●●

SDO1●●●

SEO1●●●

SFO1●●●

SGO1●●●

SHO1●●●

Constant
Torque
or
Variable
Torque

0
1
2
3
4
5
6



















3
7-1/2
10
25
40
75
150

3
7-1/2
15
30
50
100
200

5
10
25
50
100
200
400

SBG2●●●

SCG2●●●

SDG2●●●

SEG2●●●

SFG2●●●

SGG2●●●

SHG2●●●

SBW2●●●

SCW2●●●

SDW2●●●

SEW2●●●

SFW2●●●

SGW2●●●

SHW2●●●

SBW52●●●

SCW52●●●

SDW52●●●

SBA2●●●

SCA2●●●

SDA2●●●

SEA2●●●

SFA2●●●

SGA2●●●

SHA2●●●

SBO2●●●

SCO2●●●

SDO2●●●

SEO2●●●

SFO2●●●

SGO2●●●

SHO2●●●

Two Winding (Separate Winding) 3-Pole–3-Pole [4]

Constant
Hp

[4]

0
1
2
3
4
5
6
7

2
5
7-1/2
20
30
60
100

2
5
10
25
40
75
150
225

3
7-1/2
20
40
75
150
300
450






















SBG3●●●

SCG3●●●

SDG3●●●

SEG3●●●

SFG3●●●

SGG3●●●

SHG3●●●

SJG3●●●

SBW3●●●

SCW3●●●

SDW3●●●

SEW3●●●

SFW3●●●

SGW3●●●

SHW3●●●

SBW53●●●

SCW53●●●

SDW53●●●

SBA3●●●

SCA3●●●

SDA3●●●

SEA3●●●

SFA3●●●

SGA3●●●

SHA3●●●

SJA3●●●

SBO3●●●

SCO3●●●

SDO3●●●

SEO3●●●

SFO3●●●

SGO3●●●

SHO3●●●

SJO3●●●

Constant
Torque
or
Variable
Torque

[4]

0
1
2
3
4
5
6
7






















3
7-1/2
10
25
40
75
150

3
7-1/2
15
30
50
100
200
300

5
10
25
50
100
200
400
600

SBG4●●●

SCG4●●●

SDG4●●●

SEG4●●●

SFG4●●●

SGG4●●●

SHG4●●●

SJG4●●●

SBW4●●●

SCW4●●●

SDW4●●●

SEW4●●●

SFW4●●●

SGW4●●●

SHW4●●●

SBW54●●●

SCW54●●●

SDW54●●●

SBA4●●●

SCA4●●●

SDA4●●●

SEA4●●●

SFA4●●●

SGA4●●●

SHA4●●●

SJA4●●●

SBO4●●●

SCO4●●●

SDO4●●●

SEO4●●●

SFO4●●●

SGO4●●●

SHO4●●●

SJO4●●●

Class 8810—Combination Circuit Breaker Type (Thermal Magnetic Circuit Breakers) [5][6]

Single Winding (Consequent Pole) 5-Pole–3-Pole

Constant
Hp

0
1
2
3
4
5
6

2
5
7-1/2
20
30
60
100

2
5
10
25
40
75
150

3
7-1/2
20
40
75
150
300



















CBG1●●●

CCG1●●●

CDG1●●●

CEG1●●●

CFG1●●●

CGG1●●●

CHG1●●●

CBW1●●●

CCW1●●●

CDW1●●●

CEW1●●●

CFW1●●●

CGW1●●●

CHW1●●●

CBW51●●●

CCW51●●●

CDW51●●●

CBA1●●●

CCA1●●●

CDA1●●●

CEA1●●●

CFA1●●●

CGA1●●●

CHA1●●●

Constant
Torque
or
Variable
Torque

0
1
2
3
4
5
6



















3
7-1/2
10
25
40
75
150

3
7-1/2
15
30
50
100
200

5
10
25
50
100
200
400

CBG2●●●

CCG2●●●

CDG2●●●

CEG2●●●

CFG2●●●

CGG2●●●

CHG2●●●

CBW2●●●

CCW2●●●

CDW2●●●

CEW2●●●

CFW2●●●

CGW2●●●

CHW2●●●

CBW52●●●

CCW52●●●

CDW52●●●

CBA2●●●

CCA2●●●

CDA2●●●

CEA2●●●

CFA2●●●

CGA2●●●

CHA2●●●

Two Winding (Separate Winding) 3-Pole–3-Pole [4]

Constant
Hp

[4]

0
1
2
3
4
5
6
7

2
5
7-1/2
20
30
60
100

2
5
10
25
40
75
150
225

3
7-1/2
20
40
75
150
300
450






















CBG3●●●

CCG3●●●

CDG3●●●

CEG3●●●

CFG3●●●

CGG3●●●

CHG3●●●

CJG3●●●

CBW3●●●

CCW3●●●

CDW3●●●

CEW3●●●

CFW3●●●

CGW3●●●

CHW3●●●

CBW53●●●

CCW53●●●

CDW53●●●

CBA3●●●

CCA3●●●

CDA3●●●

CEA3●●●

CFA3●●●

CGA3●●●

CHA3●●●

CJA3●●●

Constant
Torque
or
Variable
Torque

[4]

0
1
2
3
4
5
6
7






















3
7-1/2
10
25
40
75
150

3
7-1/2
15
30
50
100
200
300

5
10
25
50
100
200
400
600

CBG4●●●

CCG4●●●

CDG4●●●

CEG4●●●

CFG4●●●

CGG4●●●

CHG4●●●

CJG4●●●

CBW4●●●

CCW4●●●

CDW4●●●

CEW4●●●

CFW4●●●

CGW4●●●

CHW4●●●

CBW54●●●

CCW54●●●

CDW54●●●

CBA4●●●

CCA4●●●

CDA4●●●

CEA4●●●

CFA4●●●

CGA4●●●

CHA4●●●

CJA4●●●

Footnotes

  1. NEMA 4X hubs are included with each starter at no additional cost.
  2. NEMA Type 12 enclosures can be field modified for outdoor non-corrosive and non–service-entrance rated applications. See Digest Section 16 for more information.
  3. Replace the bullets (●●●) with the voltage code when ordering this product. Refer to the standard voltage codes shown on Specifications.
  4. Type numbers shown for three-phase, separate-winding motor starters apply only when motor windings are wye connected.
    When motor windings are connected open delta, prices for three-phase, consequent pole motor starters apply.
  5. The NEC 1300% maximum setting for instantaneous trip circuit breakers may be inadequate for multispeed motors.
  6. Not available in Mag-Gard versions.

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