15 table 5 — electrical data – Carrier 48TM016-028 User Manual
Page 15
15
Table 5 — Electrical Data
LEGEND
*Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination
load equipment (refer to NEC Articles 430 and 440), the overcurrent pro-
tective device for the unit shall be fuse or HACR breaker. Canadian units
may be fuse or circuit breaker.
2. 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 percent
voltage imbalance.
% Voltage Imbalance
EXAMPLE: Supply voltage is 460-3-60.
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent voltage imbalance.
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
UNIT
48TM
NOMINAL
VOLTAGE
(3 Ph, 60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM
IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER
SUPPLY
No. 1
No. 1A
No. 2
Min
Max
RLA LRA RLA LRA RLA LRA Qty Hp FLA (ea)
Hp
FLA
FLA LRA
FLA
MCA
MOCP*
016
208/230
187
253
32.1
195
—
—
20.7
156
3
0.5
1.7
5.0 15.8/15.8
—
—
0.57
82/82
110/110
4.6
18.8
0.57
86/86
110/110
460
414
508
16.4
95
—
—
10
70
3
0.5
0.8
5.0
7.9
—
—
0.30
41
50
2.3
6.0
0.30
43
50
575
518
633
12
80
—
—
8.2
54
3
0.5
0.75
5.0
6.0
—
—
0.57
31
40
2.1
4.8
0.57
34
40
020
208/230
187
253
30.1
225
—
—
28.8
195
3
0.5
1.7
5.0 15.8/15.8
—
—
0.57
87/87
110/110
4.6
18.8
0.57
92/92
110/110
460
414
508
15.5
114
—
—
14.7
95
3
0.5
0.8
5.0
7.9
—
—
0.30
44
50
2.3
6.0
0.30
47
60
575
518
632.5 12.1
80
—
—
10.7
80
3
0.5
0.75
5.0
6.0
—
—
0.57
34
40
2.1
4.8
0.57
36
40
025
208/230
187
253
42
239
—
—
33.6
225
2
1
6.6
7.5 25.0/25.0
—
—
0.57
124/124
150/150
4.6
18.8
0.57
129/129
150/150
460
414
508
19.2
125
—
—
17.3
114
2
1
3.3
7.5
13.0
—
—
0.30
61
80
2.3
6.0
0.30
63
80
575
518
633
13.8 80.0
—
—
13.5
80.0
2
1.0
3.4
7.5
10.0
—
—
0.57
48
60
2.1
4.8
0.57
50
60
028
208/230
187.2
253
20.7
156
20.7
156
47.1
245
6
0.5
1.7
10.0 28.0/28.0
—
—
0.57
138/138
175/175
4.6
18.8
0.57
143/143
150/175
460
414
508
10
75
10
75
19.6
125
6
0.5
0.8
10.0
14.6
—
—
0.30
64
80
2.3
6
0.30
66
80
575
517.5 632.5
8.2
54
8.2
54
15.8
100
6
0.5
0.8
10.0
13.0
—
—
0.57
54
60
2.1
4.8
0.57
56
70
FLA
— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM
— Indoor (Evaporator) Fan Motor
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC
— National Electrical Code
OFM
— Outdoor (Condenser) Fan Motor
RLA
— Rated Load Amps
= 100 x
max voltage deviation from average voltage
average voltage
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
=
1371
3
= 457
% Voltage Imbalance = 100 x
7
457
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.