page 9 M-7A87-F 090710
Common applications, used as a guide to determine appropriate Trip Class.
Trip
Class 30
4-29: 1171
(3/Hr)
230 A
132 KW
190 HP
280 A
160 KW
230 HP
350 A
200 KW
290 HP
430 A
250 KW
350 HP
500 A
280 KW
400 HP
Ie
(A)
400V
Inline KW
400V
Inline HP
460V
Trip Class 5
3-5: 355
(10/Hr)
(Standard)
Trip
Class 10B
3.5-12: 1188
(3/Hr)
Trip
Class 10
3-23: 1177
(3/Hr)
Trip
Class 20
4-19: 1181
(3/Hr)
132 A
75 KW
110 HP
195 A
110 KW
160 HP
160 A
90KW
130 HP
DFE-22
*
DFE-24
*
DFE-26
*
DFE-30
DFE-32
DFE-34
DFE-36
DFE-38
DFE-26
*
DFE-30
DFE-30
DFE-32
DFE-34
DFE-38
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DFE-26
*
DFE-30
DFE-32
DFE-34
DFE-36
DFE-38
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DFE-30
DFE-32
DFE-34
DFE-36
DFE-38
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Application
Trip
Class
Start
Time
(s)
Notes
Standard
5
5
Suitable for Star / Delta applications with
< 5 s Star time, motor starts off load
Heavy
10B
12
Suitable for Star / Delta with applications
< 12 s Star time
High Torque
20
12
Requires more starting torque than a
Star / Delta
Centrifugal Pump
10
10
Generally easy to start when pumping water
Positive
displacement Pump
10
12
Can be difficult to start
Off load Conveyor
5
5
Unloaded at start
Heavy conveyor
20
12
Loaded at start
High inertia fan
10
23
Generally fans greater or equal to 45KW
Off load
Compressor
5
5
Special circuits ensure motor starts off load
Loaded
Compressor
10
12
Some compressor systems can be difficult
to start
Off load Mixer
5
5
No material in basin, off load
Heavy Mixer
20
12
Material in basin
Trip Class table
*
The basic guide for the DFE-24 and DFE-26 is available as part No.M-7A49-F.
For ratings covered by the shaded areas please contact Fairford Electronics
DFE-32
DFE-34
DFE-36
DFE-38
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