Filter
Top Products
Table 5 -- Electrical Data
UNIT
48TJ
016
(15 Tons)
020
(18 Tons)
O24
(20 Tons)
028
(28 Tons)
NOMINAL VOLTAGE COMPRESSOR
OFM
VOLTAGE RANGE No. 1 No, 2
(3Ph, 60Hz) Min Max RLA LRA RLA LRA Q_ Hp FLA(ea) Hp
208/230
460
575
208/230
460
575
208/230
460
575
208/230
46O
575
POWER COMBUSTION
IFM EXHAUST FAN MOTOR
FLA FLA LRA FLA
187 253 25.6 190 25.6 190 3 0.5 1.7 3.7 10.5/11.0
4.6 18.8
414 508 13.5 95 13.5 95 3 0.5 0.8 3.7 4.8
2.3 6.0
518 632 10.2 75 10.2 75 3 0.5 0.8 3.0 3.9
2.1 4.8
187 253 33 237 23 184 3 0.5 1.7 5.0 15.8/15.8
4.6 18.8
414 508 16.2 130 10.2 90 3 0.5 0.8 5.0 7.9
2.3 6.0
518 632 12.7 85 9 73 3 0.5 0.8 5.0 6.0
2.1 4.8
187 253 33 237 29.5 237 2 1 6.6 7.5 25.0/25.0
4.6 18.8
414 508 16.2 130 14.1 130 2 1 3.3 7.5 13.0
2.3 6.0
518 632 12.7 85 11.3 85 2 1 3.4 7.5 10.0
2.1 4.8
187 253 47.5 265 33 237 2 1 6.6 10.0 28.0/28.0
4.6 18.8
414 508 22.9 145 16.2 130 2 1 3.3 10.0 14.6
2.3 6.0
518 632 17.9 102 12.7 85 2 1 3.4 10.0 13.0
2.1 4.8
POWER
SUPPLY
MCA MOCP*
0.57 74/74 90/90
0.57 79/79 100/100
0.30 38 50
0.30 40 50
0.57 30 35
0.57 32 40
0.87 88/88 110/110
0.57 90/90 110/110
0,30 41 80
0.30 43 50
0,87 33 45
0.57 35 45
0.57 109/109 125/125
0.57 114/114 125/125
0.30 54 70
0.30 56 70
0.57 44 80
0.57 46 50
0.87 134/134 178/175
0.57 138/138 175/175
0,30 66 80
0.30 68 90
0.57 55 70
0.57 57 70
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.
cCt os
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to 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
o
greater than 2_, Use the following formula to determine the percent of volt-
age imbalance,
% Voltage Imbalance
= 100 x max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
A B C BC = 464 v
(_ AC = 455 v
Average Voltage
482 + 464 + 488
3
1371
=--
3
= 457
Determine maximum deviation from average voltage.
(AB) 487 - 482 = 8 v
(BC) 464 - 487 = 7 v
(AC) 487 - 488 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x 487
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
I IMPORTANT: If the supply voltage phase imbalance is more than I
2%, contact your local electric utility company immediately.
I
13