Carrier 48TM016-028 Installation, Start-Up And Service Instructions Manual page 15

VOLTAGE
NOMINAL
UNIT
RANGE
VOLTAGE
48TM
(3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp FLA (ea)
208/230 187 253
016 460 414 508
575 518 633
208/230 187 253
020 460 414 508
575 518 632.5 12.1
208/230 187 253
025 460 414 508
575 518 633
208/230 187.2 253
028 460 414 508
575 517.5 632.5
LEGEND
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
*Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination
load equipment (refer to NEC Articles 430 and 440), the overcurrent pro-
tective device for the unit shall be fuse or HACR breaker. Canadian units
may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percent
voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Table 5 — Electrical Data
COMPRESSOR
No. 1 No. 1A No. 2
32.1 195 — — 20.7 156
16.4 95 — — 10 70
12 80 — — 8.2 54
30.1 225 — — 28.8 195
15.5 114 — — 14.7 95
80 — — 10.7 80
42 239 — — 33.6 225
19.2 125 — — 17.3 114
13.8 80.0 — — 13.5 80.0
20.7 156 20.7 156 47.1 245
10 75 10 75 19.6 125
8.2 54 8.2 54 15.8 100
OFM IFM
Hp FLA
3 0.5 1.7 5.0 15.8/15.8
3 0.5 0.8 5.0 7.9
3 0.5 0.75 5.0 6.0
3 0.5 1.7 5.0 15.8/15.8
3 0.5 0.8 5.0 7.9
3 0.5 0.75 5.0 6.0
2 1 6.6 7.5 25.0/25.0
2 1 3.3 7.5 13.0
2 1.0 3.4 7.5 10.0
6 0.5 1.7 10.0 28.0/28.0
6 0.5 0.8 10.0 14.6
6 0.5 0.8 10.0 13.0
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage = 452 + 464 + 455
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 voltage imbalance.
% Voltage Imbalance = 100 x
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
15
POWER COMBUSTION
EXHAUST FAN MOTOR
FLA LRA FLA MCA
— — 0.57 82/82
4.6 18.8 0.57 86/86
— — 0.30 41
2.3 6.0 0.30 43
— — 0.57 31
2.1 4.8 0.57 34
— — 0.57 87/87
4.6 18.8 0.57 92/92
— — 0.30 44
2.3 6.0 0.30 47
— — 0.57 34
2.1 4.8 0.57 36
— — 0.57 124/124 150/150
4.6 18.8 0.57 129/129 150/150
— — 0.30 61
2.3 6.0 0.30 63
— — 0.57 48
2.1 4.8 0.57 50
— — 0.57 138/138 175/175
4.6 18.8 0.57 143/143 150/175
— — 0.30 64
2.3 6 0.30 66
— — 0.57 54
2.1 4.8 0.57 56
3
1371
=
3
= 457
7
457
POWER
SUPPLY
MOCP*
110/110
110/110
50
50
40
40
110/110
110/110
50
60
40
40
80
80
60
60
80
80
60
70