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Instruction Leaflet
Page 4
Effective: February 2002
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
Equivalent
Position
FLA
1.6
96
1.7
102
1.8
108
1.9
114
2.0
120
2.1
126
2.2
132
2.3
138
2.4
144
2.5
150
2.6
156
2.7
162
2.8
168
2.9
174
3.0
180
3.5
210
4.0
240
4.5
270
5.0
300
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
Series CEP7
Solid State Overload Relay
Table 3. CT Ratio = 600:5 (Size 6 Starters)
Dial Set
Equivalent
Position
FLA
1.6
192
1.7
204
1.8
216
1.9
228
2.0
240
2.1
252
2.2
264
2.3
276
2.4
288
2.5
300
2.6
312
2.7
324
2.8
336
2.9
348
3.0
360
3.5
420
4.0
480
4.5
540
5.0
600
Note: Overload = CEP7-M32-5-20.
Range 1.6...5.0 (amperes).
Table 4. CT Ratio = 1000:5 (Size 7 Starters)
Dial Set
Equivalent
Position
FLA
1.6
320
1.7
340
1.8
360
1.9
380
2.0
400
2.1
420
2.2
440
2.3
460
2.4
480
2.5
500
2.6
520
2.7
540
2.8
560
2.9
580
3.0
600
3.5
700
4.0
800
4.5
900
5.0
1000
Note: Overload = CEP7-M32-5-20.
Range 1.6...5.0 (amperes).
© 2002 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. IL04303001E
February 2002
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