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Table 1E — Electrical Data (COBRA™ Energy Recovery 48HJ008-014 Units with 62AQ200)
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
48HJ008
208/230-3-60
STD
NO
21.9
60.1
70
66
366
STD
YES
21.9
66.1
70
71
371
HIGH STATIC
NO
21.9
63.2
70
69
391
HIGH STATIC
YES
21.9
69.2
80
75
395
460-3-60
STD
NO
10.2
29.4
35
32
184
STD
YES
10.2
32.1
35
34
186
HIGH STATIC
NO
10.2
30.8
35
34
197
HIGH STATIC
YES
10.2
33.5
35
36
199
48HJ009
208/230-3-60
STD
NO
21.9
62.1
70
68
400
STD
YES
21.9
68.1
70
73
405
HIGH STATIC
NO
21.9
65.2
70
71
425
HIGH STATIC
YES
21.9
65.2
70
71
425
460-3-60
STD
NO
10.2
31.7
35
34
206
STD
YES
10.2
34.4
40
37
208
HIGH STATIC
NO
10.2
33.1
35
36
219
HIGH STATIC
YES
10.2
35.8
40
38
221
48HJ012
208/230-3-60
STD
NO
21.9
74.9
80
81
465
STD
YES
21.9
80.9
90
87
469
HIGH STATIC
NO
21.9
79.3
90
86
488
HIGH STATIC
YES
21.9
85.3
90
92
493
460-3-60
STD
NO
10.2
35.1
40
38
234
STD
YES
10.2
37.8
40
40
236
HIGH STATIC
NO
10.2
37.7
40
41
245
HIGH STATIC
YES
10.2
40.4
45
43
247
48HJ014
208/230-3-60
STD
NO
21.9
82.5
90
89
550
STD
YES
21.9
88.5
100
95
555
460-3-60
STD
NO
10.2
39.3
45
43
270
STD
YES
10.2
42.0
45
45
272
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
Summary of Contents for COBRA 48HJ004-014
Page 8: ...8 Fig 5A Base Unit Dimensions COBRA Energy Recovery Unit 48 50HJ004 007 with 62AQ060 100 cont...
Page 9: ...9 Fig 5B Base Unit Dimensions COBRA Energy Recovery Unit 48 50HJ008 014 with 62AQ200 300...
Page 10: ...10 Fig 5B Base Unit Dimensions COBRA Energy Recovery Unit 48 50HJ008 014 with 62AQ200 300 cont...
Page 39: ...39 Fig 19 Typical Wiring Schematic Standard Controls cont...