Carrier 38AK008 User's Manual | Page 7
7
Table 5 — Electrical Data
LEGEND
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.
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%.
3. The 575-v units are CSA only.
4. the 380 v, 60 Hz units and all 50 Hz units are not UL or CSA
listed.
UNIT
38
NOMINAL VOLTAGE
(V-Ph-Hz)
VOLTAGE RANGE
COMPRESSOR
OFM
POWER SUPPLY
MIN
MAX
RLA
LRA
FLA
MCA
MOCP
AK007
208/230-3-60
187
254
21.8
158
1.9
30.1
40
460-3-60
414
508
10.0
79
1.0
13.6
20
575-3-60
518
632
9.0
65
1.9
14.1
20
220-3-50
198
242
21.8
158
1.0
28.8
35
400-3-50
360
440
10.0
79
1.0
14.0
20
AK008
208/230-3-60
187
254
28.8
195
3.8
39.8
50
460-3-60
414
508
14.7
95
1.9
20.3
25
575-3-60
518
632
10.8
80
1.9
15.4
20
220-3-50
198
242
28.8
195
1.5
37.5
45
400-3-50
360
440
14.7
95
1.5
19.9
25
AK012
208/230-3-60
187
254
37.8
239
3.8
39.8
20
460-3-60
414
508
17.2
125
2.2
20.3
30
575-3-60
518
632
14.3
90
1.9
15.4
25
220-3-50
198
242
37.8
239
1.4
48.8
60
400-3-50
360
440
17.2
125
1.4
23.0
30
AKS008
208/230-3-60
187
254
31.5
160
3.1
42.5
50
380-3-60
342
418
19.0
75
2.2
26.0
35
460-3-60
414
508
15.7
80
1.4
21.0
25
575-3-60
518
632
12.6
64
1.4
17.2
20
220-3-50
198
253
31.5
160
1.4
42.5
50
400-3-50
342
460
15.7
80
1.4
21.0
25
AKS009
208/230-3-60
187
254
39.7
198
3.1
52.7
70
380-3-60
342
418
24.0
93
2.2
32.2
40
460-3-60
414
508
19.9
99
1.4
26.3
35
575-3-60
518
632
15.9
79
1.4
21.3
25
220-3-50
198
253
39.7
198
1.4
52.7
70
400-3-50
342
460
19.9
99
1.4
26.3
35
AKS012
208/230-3-60
187
254
39.7
198
3.1
52.7
70
380-3-60
342
418
24.0
93
2.2
32.2
40
460-3-60
414
508
19.9
99
1.4
26.3
35
575-3-60
518
632
15.9
79
1.4
21.3
25
220-3-50
198
253
39.7
198
1.4
52.7
70
400-3-50
342
460
19.9
99
1.4
26.3
35
CSA
— Canadian Standards Association
FLA
— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC
— National Electrical Code (U.S.A. Standard)
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
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