11
Table 2C — 48HJ High-Static Motor Units Without Electrical Convenience Outlet
Table 2D — 48HJ High-Static 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
(each)
OFM IFM
COMBUSTION
FAN MOTOR
POWER
SUPPLY
MINIMUM UNIT
DISCONNECT
SIZE*
Min Max RLA LRA FLA FLA RLA MCA MOCP† FLA LRA
004
208/230-3-60 187 254 10.3 77.0 0.7 5.8 0.6 19.4/19.4 25/25 19/19 120/120
460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 9.4 15 9 60
575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 7.7 15 8 48
005
208/230-3-60 187 254 13.5 99.0 0.7 5.8 0.6 23.4/23.4 30/30 23/23 142/142
460-3-60 414 508 7.4 49.5 0.4 2.6 0.3 12.3 15 12 71
575-3-60 518 632 5.8 40.0 0.4 2.6 0.3 9.7 15 9 57
006
208/230-3-60 187 254 17.3 123.0 1.5 7.5 0.6 30.6/30.6 35/35 30/30 187/187
460-3-60 414 508 9.0 62.0 0.8 3.4 0.3 15.5 20 15 94
575-3-60 518 632 7.1 50.0 0.8 3.4 0.3 12.2 15 12 76
007
208/230-3-60 187 254 20.5 156.0 1.4 7.5 0.6 30.6/30.6 35/35 30/30 187/187
460-3-60 414 508 9.6 70.0 0.6 3.4 0.3 15.5 20 15 94
575-3-60 518 632 7.7 56.0 0.6 3.4 0.3 12.2 15 12 76
UNIT
48HJ
NOMINAL
VOLTAGE
(V-Ph-Hz)
VOLTAGE
RANGE
COMPRESSOR
(each)
OFM IFM
COMBUSTION
FAN MOTOR
POWER
SUPPLY
MINIMUM UNIT
DISCONNECT
SIZE*
Min Max RLA LRA FLA FLA RLA MCA MOCP† FLA LRA
004
208/230-3-60 187 254 10.3 77.0 0.7 5.8 0.6 25.4/25.4 30/30 25 124/124
460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 12.1 15 12 63
575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 9.8 15 10 50
005
208/230-3-60 187 254 13.5 99.0 0.7 5.8 0.6 29.4/29.4 35/35 29 146/146
460-3-60 414 508 7.4 49.5 0.4 2.6 0.3 15.0 20 14 73
575-3-60 518 632 5.8 40.0 0.4 2.6 0.3 11.8 15 11 59
006
208/230-3-60 187 254 17.3 123.0 1.5 7.5 0.6 36.6/36.6 40/40 36 192/192
460-3-60 414 508 9.0 62.0 0.8 3.4 0.3 18.2 20 18 96
575-3-60 518 632 7.1 50.0 0.8 3.4 0.3 14.4 20 14 77
007
208/230-3-60 187 254 20.5 156.0 1.4 7.5 0.6 40.5/40.5 45/45 39 224/224
460-3-60 414 508 9.6 70.0 0.6 3.4 0.3 18.7 25 18 104
575-3-60 518 632 7.7 56.0 0.6 3.4 0.3 15.0 20 15 89
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
