Effstd $ savings = power savings (%) x 0.746 x hp, Operhrs, Rate^w . hr – Carrier 39E/ER User Manual
Page 13: High-efficiency motors
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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
V k
.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
1 3