23 table 5 — electrical data, alternate motors – Carrier 40RMS008-034 User Manual
Page 23
23
Table 5 — Electrical Data, Alternate Motors
Legend and Notes For Tables 4 and 5
LEGEND
*Motors are designed for satisfactory operation within 10% of nominal volt-
ages shown. Voltages should not exceed the limits shown in the Voltage Lim-
its column.
NOTES:
1. Minimum circuit amps (MCA) and MOCP values are calculated in accor-
dance with NEC (National Electrical Code), Article 440.
2. Motor FLA values are established in accordance with UL (Underwriters’
Laboratories) Standard 1995.
3.
Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%.
Use the following formula to determine the percentage of
voltage imbalance.
EXAMPLE: Supply voltage is 400-3-50.
AB = 393 v
BC = 403 v
AC = 396 v
Determine maximum deviation from average voltage.
(AB) 397 – 393 = 4 v
(BC) 403 – 397 = 6 v
(AC) 397 – 396 = 1 v
Maximum deviation is 6 v.
Determine percent voltage imbalance.
This amount of phase imbalance is satisfactory because it is below the maxi-
mum allowable 2%.
UNIT
V*-PH-Hz
VOLTAGE
LIMITS
FAN MOTOR
POWER SUPPLY
Hp (kW)
FLA
Minimum
Circuit Amps
MOCP
40RM
007
208/230-1-60
187-253
2.4 (1.79)
11.0/11.0
13.8/13.8
20
208/230-3-60
187-253
2.9 (2.16)
7.5
9.4
15
460-3-60
414-506
2.9 (2.16)
3.4
4.3
15
575-3-60
518-632
2.0 (1.49)
2.4
3.0
15
230-3-50
207-253
2.4 (1.79)
5.2
6.5
15
400-3-50
360-440
2.4 (1.79)
2.6
3.3
15
40RM
40RMQ
40RMS
008
208/230-1-60
187-253
2.4 (1.79)
11.0
13.8
15
208/230-3-60
187-253
2.9 (2.16)
7.5/7.5
9.4/9.4
15
460-3-60
414-506
2.9 (2.16)
3.4
4.3
15
575-3-60
518-632
3.0 (2.24)
3.8
4.8
15
230-3-50
207-253
2.9 (2.16)
7.5
9.4
15
400-3-50
360-440
2.9 (2.16)
3.4
4.3
15
40RMS
010
208/230-1-60
187-253
2.4 (1.79)
11.0
13.8
20
208/230-3-60
187-253
2.9 (2.16)
7.5
9.4
15
460-3-60
414-506
2.9 (2.16)
3.4
4.3
15
575-3-60
518-632
3.0 (2.24)
3.8
4.8
15
230-3-50
207-253
2.9 (2.16)
7.5
9.4
15
400-3-50
360-440
2.9 (2.16)
3.4
4.3
15
40RM
40RMQ
40RMS
012
208/230-3-60
187-253
3.7 (2.76)
10.5/10.5
13.3/13.3
20
460-3-60
414-506
3.7 (2.76)
4.8
6.0
15
575-3-60
518-632
3.0 (2.24)
3.8
4.8
15
230-3-50
207-253
5.0 (3.73)
15.2
19.0
30
400-3-50
360-440
5.0 (3.73)
7.6
9.5
15
40RM
40RMS
014
208/230-3-60
187-253
3.7 (2.76)
10.2
12.7
20
460-3-60
414-506
3.7 (2.76)
4.8
6.0
15
575-3-60
518-632
5.0 (3.73)
5.1
6.4
15
230-3-50
207-253
5.0 (3.73)
15.2
19.0
30
400-3-50
360-440
5.0 (3.73)
7.6
9.5
15
40RM
40RMQ
40RMS
016
208/230-3-60
187-253
5.0 (3.73)
14.6/12.8
18.3/16.0
30/25
460-3-60
414-506
5.0 (3.73)
6.4
8.0
15
575-3-60
518-632
5.0 (3.73)
5.1
6.4
15
230-3-50
207-253
5.0 (3.73)
15.2
19.0
30
400-3-50
360-440
5.0 (3.73)
7.6
9.5
15
40RM
40RMQ
40RMS
024
208/230-3-60
187-253
7.5 (5.59)
21.5/19.4
26.9/24.3
45/40
460-3-60
414-506
7.5 (5.59)
9.7
12.1
20
575-3-60
518-632
7.5 (5.59)
7.8
9.8
15
230-3-50
207-253
7.5 (5.59)
22.8
28.5
50
400-3-50
360-440
7.5 (5.59)
11.4
14.3
25
40RM
40RMQ
40RMS
028
208/230-3-60
187-253
10.0 (7.46)
28.2/26.8
35.3/33.5
60/60
460-3-60
414-506
10.0 (7.46)
13.4
16.8
30
575-3-60
518-632
10.0 (7.46)
10.3
12.9
20
230-3-50
207-253
10.0 (7.46)
32.2
40.3
60
400-3-50
360-440
10.0 (7.46)
16.1
20.1
30
FLA
—
Full Load Amps
MOCP
—
Maximum Overcurrent Protection
= 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
393 + 403 + 396
3
=
1192
3
= 397
% Voltage Imbalance = 100 x
6
397
= 1.5%
IMPORTANT:
If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.