Carrier 48TJ016-028 - Manual (Page 13)

Table 5 — Electrical Data
UNIT
48TJ
NOMINAL
VOLTAGE
(3 Ph, 60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER
SUPPLY No. 1 No. 2
Min Max RLA LRA RLA LRA Qty Hp FLA (ea) Hp FLA FLA LRA FLA MCA MOCP*
016
(15 Tons)
208/230 187 253 25.6 190 25.6 190 3 0.5 1.7 3.7 10.5/11.0
0.57 74/74 90/90
4,6 18.8 0.57 79/79 100/100
460 414 508 13.5 95 13.5 95 3 0.5 0.8 3.7 4.8
0.30 38 50
2.3 6.0 0.30 40 50
575 5f8 632 10.2 75 10.2 75 3 0.5 0.8 3.0 3.9
— — 0.57 30 35
2.1 4.8 0.57 32 40
020
(18 Tons)
208/230 187 253 33 237 23 184 3 0.5 1.7 5.0 15,8/15.8
— — 0.57 85/85 110/110
4.6 18.8 0.57 90/90 110/110
460 414 508 16.2 130 10.2 90 3 0.5 0.8 5.0 7.9
— — 0.30 41 50
2,3 6.0 0,30 43 50
575 518 632 12.7 85 9 73 3 0.5 0.8 5.0 6,0
— — 0.57 33 45
2,1 4.8 0.57 35 45
024
(20 Tons)
208/230 187 253 33 237 29.5 237 2 1 6.6 7.5 25.0/25.0
— — 0.57 109/109 125/125
4,6 18.8 0.57 114/114 125/125
460 414 508 16.2 130 14.1 130 2 1 3.3 7.5 13.0
— — 0.30 54 70
2,3 6.0 0.30 56 70
575 518 632 12.7 85 11.3 85 2 1 3.4 7.5 10.0
0.57 44 50
2.1 4.8 0.57 46 50
028
(25 Tons)
208/230 187 253 47.5 265 33 237 2 1 6.6 10.0 28.0/28.0
— 0.57 134/134 175/175
4.6 18.8 0.57 138/138 175/175
460 414 508 22.9 145 16.2 130 2 1 3.3 10.0 14.6
— — 0.30 66 80
2.3 6.0 0.30 68 90
575 518 632 17.9 102 12.7 85 2 1 3.4 10.0 13.0
— — 0.57 55 70
2,1 4.8 0.57 57 70
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
!FH/l ~ 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 multimofor and combinafion load
equipmenf (refer fo NEC Articles 430 and 440), the overcurrent protective
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 of volt­
age imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
ABC AB = 452 V
BC = 464 V
AC = 455 V
Average Voltage ;
452 + 464 + 455
f37f
= 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.
7
% Voltage Imbalance = f 00 x
457
= t .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.
t o o X
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