Carrier COBRA 48/50HJ004-014 - Manual (Page 21)

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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