Carrier 48HJD005-007 User Manual
Page 10
10
Table 2A — 48HJ Electrical Data Standard Motor (Units Without Electrical Convenience Outlet)
Table 2B — 48HJ Electrical Data Standard Motor (Units With Electrical Convenience Outlet)
LEGEND
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combi-
nation load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply volt-
age is greater than 2%. Use the following formula to determine
the percent of voltage imbalance.
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
= 457
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 of voltage imbalance.
% Voltage Imbalance= 100 x
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
UNIT
48HJ
NOMINAL
VOLTAGE
(V-Ph-Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM
IFM
COMBUSTION
FAN MOTOR
POWER
SUPPLY
WITH OUTLET
MINIMUM UNIT
DISCONNECT
SIZE*
Min
Max
RLA
LRA
FLA
FLA
FLA
MCA
MOCP†
FLA
LRA
004
(3 Tons)
208/230-1-60
187
254
16.0
88.0
0.7
4.9
.57
25.6/25.6
35/35
25/25
101/101
208/230-3-60
187
254
10.3
77.0
0.7
4.9
.57
18.5/18.5
25/25
18/18
90/ 90
460-3-60
414
508
5.1
39.0
0.4
2.2
.30
9.0
15
9
46
575-3-60
518
632
4.2
31.0
0.4
2.2
.30
7.3
15
7
36
005
(4 Tons)
208/230-1-60
187
254
23.7
129.0
0.7
4.9
.57
35.2/35.2
45/45
34/34
142/142
208/230-3-60
187
254
13.5
99.0
0.7
4.9
.57
22.5/22.5
30/30
22/22
112/112
460-3-60
414
508
7.4
49.5
0.4
2.2
.30
11.9
15
12
56
575-3-60
518
632
5.8
40.0
0.4
2.2
.30
9.3
15
9
45
006
(5 Tons)
208/230-1-60
187
254
28.8
169.0
1.5
8.8
.57
46.3/46.3
60/60
45/45
216/216
208/230-3-60
187
254
17.3
123.0
1.5
5.8
.57
28.9/28.9
35/35
28/28
168/168
460-3-60
414
508
9.0
62.0
0.8
2.6
.30
14.7
20
14
84
575-3-60
518
632
7.1
50.0
0.8
2.6
.30
11.6
15
11
67
007
(6 Tons)
208/230-3-60
187
254
20.5
156.0
1.4
5.8
.57
32.8/32.8
40/40
32/32
200/200
460-3-60
414
508
9.6
70.0
0.6
2.6
.30
15.2
20
15
92
575-3-60
518
632
7.7
56.0
0.6
2.6
.30
12.2
15
13
78
UNIT
48HJ
NOMINAL
VOLTAGE
(V-Ph-Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM
IFM
COMBUSTION
FAN MOTOR
POWER
SUPPLY
WITH OUTLET
MINIMUM UNIT
DISCONNECT
SIZE*
Min
Max
RLA
LRA
FLA
FLA
FLA
MCA
MOCP†
FLA
LRA
004
(3 Tons)
208/230-1-60
187
254
16.0
88.0
0.7
4.9
.57
31.6/31.6
40/40
30/30
106/106
208/230-3-60
187
254
10.3
77.0
0.7
4.9
.57
24.5/24.5
30/30
24/24
95/95
460-3-60
414
508
5.1
39.0
0.4
2.2
.30
11.7
15
11
48
575-3-60
518
632
4.2
31.0
0.4
2.2
.30
9.5
15
9
38
005
(4 Tons)
208/230-1-60
187
254
23.7
129.0
0.7
4.9
.57
41.2/41.2
50/50
39/39
147/147
208/230-3-60
187
254
13.5
99.0
0.7
4.9
.57
28.5/28.5
35/35
27/27
117/117
460-3-60
414
508
7.4
49.5
0.4
2.2
.30
14.6
20
14
58
575-3-60
518
632
5.8
40.0
0.4
2.2
.30
11.5
15
11
47
006
(5 Tons)
208/230-1-60
187
254
28.8
169.0
1.5
8.8
.57
52.3/52.3
60/60
50/50
221/221
208/230-3-60
187
254
17.3
123.0
1.5
5.8
.57
34.9/34.9
40/40
34/34
173/173
460-3-60
414
508
9.0
62.0
0.8
2.6
.30
17.4
20
17
86
575-3-60
518
632
7.1
50.0
0.8
2.6
.30
13.8
20
13
69
007
(6 Tons)
208/230-3-60
187
254
20.5
156.0
1.4
5.8
.57
38.8/38.8
45/45
37/37
205/205
460-3-60
414
508
9.6
70.0
0.6
2.6
.30
17.9
20
17
94
575-3-60
518
632
7.7
56.0
0.6
2.6
.30
14.3
20
15
79
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
UL
— Underwriters’ Laboratories
= 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
452 + 464 + 455
3
=
1371
3
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
7
457