Carrier COBRA 48/50HJ004-014 User Manual
Page 17
17
Table 1C — Electrical Data (COBRA™ Energy Recovery 48HJ004-007 Units with 62AQ100)
LEGEND
*Used to determine minimum disconnect per NEC.
†Single point box CRSINGLE017A00 is part of base unit.
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
NOMINAL
V-PH-Hz
IFM
TYPE
CONV
OUTLET
62AQ
FLA
POWER SUPPLY
DISCONNECT SIZE*
MCA
FUSE OR
HACR BKR
FLA
LRA
48HJ004
208/230-1-60
STD
NO
15.1
40.7/40.7
45/45
42/42
161/161
STD
YES
15.1
46.7/46.7
50/50
48/48
166/166
208/230-3-60
STD
NO
15.1
33.6/33.6
40/40
36/36
150/150
STD
YES
15.1
39.6/39.6
45/45
41/41
155/155
HIGH STATIC
NO
15.1
34.5/34.5
40/40
37/37
180/180
HIGH STATIC
YES
15.1
40.5/40.5
45/45
42/42
184/184
460-3-60
STD
NO
15.1
16.5
20
18
76
STD
YES
15.1
19.2
20
23
80
HIGH STATIC
NO
15.1
16.9
20
18
90
HIGH STATIC
YES
15.1
19.6
25
24
95
48HJ005
208/230-1-60
STD
NO
15.1
50.3/50.3
60/60
51/51
199/199
STD
YES
15.1
56.3/56.3
70/70
57/57
204/204
208/230-3-60
STD
NO
15.1
37.6/37.6
45/45
39/39
166/166
STD
YES
15.1
43.6/43.6
50/50
45/45
171/171
HIGH STATIC
NO
15.1
38.5/38.5
45/45
40/40
196/196
HIGH STATIC
YES
15.1
44.5/44.5
50/50
46/46
200/200
460-3-60
STD
NO
15.1
18.2
20
19
83
STD
YES
15.1
20.9
25
25
88
HIGH STATIC
NO
15.1
18.6
25
19
97
HIGH STATIC
YES
15.1
21.3
25
25
102
48HJ006
208/230-1-60
STD
NO
15.1
61.4/61.4
70/70
62/62
276/276
STD
YES
15.1
67.4/67.4
80/80
68/68
281/281
208/230-3-60
STD
NO
15.1
44.0/44.0
50/50
46/46
228/228
STD
YES
15.1
50.0/50.0
60/60
51/51
233/233
HIGH STATIC
NO
15.1
45.7/45.7
60/60
48/48
247/247
HIGH STATIC
YES
15.1
51.7/51.7
60/60
53/53
252/252
460-3-60
STD
NO
15.1
22.2
25
23
114
STD
YES
15.1
24.9
30
28
119
HIGH STATIC
NO
15.1
23.0
30
24
123
HIGH STATIC
YES
15.1
25.7
30
29
128
48HJ007
208/230-3-60
STD
NO
15.1
47.9/47.9
60/60
49/49
260/260
STD
YES
15.1
53.9/53.9
60/60
55/55
265/265
HIGH STATIC
NO
15.1
49.6/49.6
60/60
51/51
279/279
HIGH STATIC
YES
15.1
55.6/55.6
60/60
57/57
284/284
460-3-60
STD
NO
15.1
22.8
30
23
127
STD
YES
15.1
25.5
30
29
131
HIGH STATIC
NO
15.1
23.6
30
24
136
HIGH STATIC
YES
15.1
26.3
30
30
141
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
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