Table 11 — Typical Performance — TEFC,
2-Speed Motors
Table 12 — Typical Motor Weights
RATED
HP
FRAME
1/.25
143T
1.8/.75
1
.12
1.5/.37
145T
1.95/.85
1’/2
.19
2/.5
145T
3.2/1.3
2
.25
3/.75
182T 4.2/1.6
3
.375
5/1.2
184T 6.5/2.5
5
.63
7.5/1.9
213T
10.5/4.2
I'h
.94
10/2.5
215T
13.5/5.5
10
1.25
15/3.7
256T 19 5/7 5
15
1.87
20/5
254T
26.0/9.0 20
2.50
25/6.2
286T 33.0/11.0
25
3.12
30/7.5
324T 35.5/13.4
30
3.75
40/10
326T
50.0/15 0
40
5.00
50/12.5
326T
61 5/22 4
50
6.25
FULL LOAD
AMPS AT
460 VOLTS
OPERATING HP
High Speed | Low Speed
TWO-SPEED 1800/900 RPM — ONE WINDING
TWO-SPEED 1800/1200 RPM — 2 WINDING
1/.44
145T
1.7/1.1 1
.30
1.5/.68
145T 2.5/1.4
1'/2
.44
2/.88
182T 3.0/1.7
2
.59
3/1.3
184T
4.472.6
3
.89
5/2.2
213T
7.1/4.8
5
1.48
7.5/3.3 215T
10.0/7.5 7'/2
2.22
10/4.4 254T 13.5/7.5 10
2.96
15/6.7 256T 18.6/9.8 15
4.40
20/8.9 284T 24 0/12.0 20
5.93
25/11 286T 30.0/15.0 25
7.40
30/13 324T 36.0/19.0 30
8.90
40/18
326T
48.0/24.0 40
11.87
50/22
364T 59.0/28 0
50
14.84
TWO-SPEED 1800/900 RPM — 2 WINDING
1/.25
145T
1.8/.9 1
.12
1.5/.37
145T 2 1/95
Vk
.19
2/.5
182T 3.3/1.4
2
.25
3/.75
184T
4 3/2 0 3
.37
5/1.2
213T
7.0/3.5 5
.63
7.5/1.9
215T
9.6/4.3 772
.94
10/2.5
254T 13.0/5.6
10
1.25
15/3.7
256T 19.0/7.5
15
1.87
20/5
284T
25.0/9.0 20
2.50
25/6.2
286T
30.0/11.0 25
3.12
30/7.5
324T
36.0/13 0 30
3.75
40/10
326T
48.0/16.0 40
5.00
50/12.5
364T
59 0/20 0 50
6 25
1800 RPM
3600 RPM
HP ODP
TEFC
ODP TEFC
Weight
Weight
Frame Weight
Frame Weight
2 145T
___
55
__
__
_ _
3 182T
58 90 145T
—
182T
79
5 184T 68 105
182T
58
184T 95
7.5 213T 88 149
184T
70
213T 139
10 215T 112 179
213T 93
215T
170
15 254T 172 253
215T 115
254T
243
20 256T 205
297
254T 215
256T
288
25
284T 284 366
256T
240
— —
30 286T
324
429
40
324T 436 477
50
326T
489
526
60 364T 632 770
75 365T 676 865
100 404T 932
1273
ODP — Open Drip Proof
TEFC — Totally Enclosed, Fan-Cooled
NOTES
1 Frame sizes given above apply to motors for which standard
drives are available
2 Two-speed motors are heavier and require isolator spring
changes per special order
High-Efficiency Motors are available from most
motor manufacturers for a relatively small price premium
(20 - 30%). Available in the same frame size as the stand
ard motor, these motors may be an inch or more longer
(Cmax)i and are generally 5 - 7% more efficient, (though
some may be little more than 0.5 - 1.0%). Over their life
time, some can pay for themselves many times over For
purposes of comparison, their power savings can be
represented as follows:
Power Savings (%) =
EffHi = Effstd
EffHl X Effstd
$ Savings = Power Savings (%) x 0.746 x Hp
X Operhrs X Rate^w . hr
13
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