Series CEP7
Solid State Overload Relay
Instruction Leaflet Overload Relay
Application and Installation
Description Page
Overload Relay Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Trip Curves and Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Operating Modes and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Contact Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Adjustment Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Table 1. Series CEP7 Solid State Overload Relay
Catalog Number
CEP7-M(A)-32-__
3-Phase ~ FLA
0.1...32
Wire Size/Torque
#14...8 AWG
75ºC Cu
16 lb-in
Accessories
CEP7-37-P-A
CEP7-M(A)-37-__ 3.7...37
#14...8 AWG
75ºC Cu
12 lb-in
CEP7-M(A)-45-__ 14...45
#14...6 AWG
75ºC Cu
14 lb-in
CEP7-45-P-A
CEP7-M(A)-85-__ 26...85
#12...2 AWG
75ºC Cu
35 lb-in
CEP7-85-P-A
IL04303001E
CEP7-M(A)-110-__ 66...110
CEP7-M(A)-180-__ 57...180
#8...1/0 AWG
75ºC Cu
150 lb-in
#6...4/0 AWG
75ºC Cu
275 lb-in
For more information visit: www.cutler-hammer.com
CEP7-LE1
CEP7-LF1
Instruction Leaflet
Page 2 Effective: February 2002
Series CEP7
Solid State Overload Relay
Trip Curves and Wiring Diagrams
Cold Start
Hot Start
Class 10
1000
800
600
400
200
100
80
60
40
20
10
8
6
4
2
1
.8
.6
.4
.2
.1
1
2 4 6 8
10
Multiple of Full Load Current
Figure 1. Trip Curves
Class 20
1
.8
.6
.4
.2
20
10
8
6
4
2
1000
800
600
400
200
100
80
60
40
.1
1
2 4 6 8
10
Multiple of Full Load Current
1 Connection must be made by user
Figure 2. Wiring Diagrams — 3-Phase Full Voltage Across-the-Line Starter
T2
T3
For more information visit: www.cutler-hammer.com
IL04303001E
Series CEP7
Solid State Overload Relay
Instruction Leaflet
Effective: February 2002 Page 3
Operating Modes
■
■
Man (Manual): Reset by pushing button in. (Standard Offering)
Trip: Push and turn reset button counterclockwise to manually trip.
This action causes N.O. and N.C. contacts to change state. Releasing button reverts device to manual mode.
CEP7-M32__
CEP7-M37__
CEP7-M45__
CEP7-M85__
CEP7-M110__
CEP7-M180__
■
■
Auto: Push and turn reset button to auto position. The relay resets automatically — approximately
2 minutes after tripping.
(Optional Offering)
Trip: Push and turn reset button counterclockwise to manually trip.
This action causes N.O. and N.C. contacts to change state. Releasing button reverts device to manual mode.
CEP7-A32__
CEP7-A37__
CEP7-A45__
CEP7-A85__
CEP7-A110__
CEP7-A180__
ATTENTION: Do not use automatic reset mode in applications where unexpected automatic restart of the motor can cause injury to persons or damage to equipment.
Figure 3. Contact Status
Adjustments
To adjust trip current, turn dial until the desired current is aligned with the ▲ pointer. Trip rating is 120% of dial setting.
Push to Test
Trip Indicator Window
Yellow indicator not visible: Not Tripped
Yellow indicator visible: Tripped
Figure 4. Trip Current Adjustment Figure 5. Motor Current Rating
IL04303001E For more information visit: www.cutler-hammer.com
Instruction Leaflet
Page 4 Effective: February 2002
Series CEP7
Solid State Overload Relay
CEP7 Application with (3) Current Transformers — Adjustment Guidelines
Current Transformers to be used with CEP7 Solid State Relays for Size 5 starters and above.
Setting the Overload Relay
1. Select Table 2 , 3 or 4 depending on the Current Transformer (CT) ratio being utilized.
2. Select the “Equivalent FLA,” which most closely matches the motor FLA, then set the overload relay dial to the corresponding “Dial Set Position.”
Note: The motor FLA may not exactly match the value in the Equivalent FLA column.
3. The overload relay dial settings are calculated as: Set Value = Dial Set Position/1/(CT Ratio) = Equivalent FLA .
Example: CT Ratio is 300:5, motor FLA is 240A, set overload Dial Set Position at 4.0; Set Value = 4.0/(1/60) = 240 .
Table 2. CT Ratio = 300:5 (Size 5 Starters)
Dial Set
Position
Equivalent
FLA
2.5
2.6
2.7
2.8
2.9
3.0
3.5
4.0
4.5
5.0
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
150
156
162
168
174
180
210
240
270
300
96
102
108
114
120
126
132
138
144
Note: Overload = CEP7-M32-5-20.
Range 1.6...5.0 (amperes).
Table 3. CT Ratio = 600:5 (Size 6 Starters)
Dial Set
Position
Equivalent
FLA
2.5
2.6
2.7
2.8
2.9
3.0
3.5
4.0
4.5
5.0
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
300
312
324
336
348
360
420
480
540
600
192
204
216
228
240
252
264
276
288
Note: Overload = CEP7-M32-5-20.
Range 1.6...5.0 (amperes).
Table 4. CT Ratio = 1000:5 (Size 7 Starters)
Dial Set
Position
Equivalent
FLA
2.5
2.6
2.7
2.8
2.9
3.0
3.5
4.0
4.5
5.0
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
500
520
540
560
580
600
700
800
900
1000
320
340
360
380
400
420
440
460
480
Note: Overload = CEP7-M32-5-20.
Range 1.6...5.0 (amperes).
Eaton Corporation
Cutler-Hammer business unit
1000 Cherrington Parkway
Moon Township, PA 15108-4312
USA tel: 1-800-525-2000 www.cutler-hammer.com
© 2002 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. IL04303001E
February 2002
