Carrier 48TF004-007 - Manual (Page 10)

10
Table 2 — Electrical Data
LEGEND
*Used to determine minimum disconnect per NEC.
†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
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 voltage imbalance.
% 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.
= 1.53%
This amount of phase imbalance is satisfactory as it is below the max-
imum allowable 2%.
UNIT
48TF NOMINAL
V-Ph-Hz
IFM
TYPE
VOLTAGE
RANGE
COMPRESSOR
(ea)
OFM
(ea)
IFM
FLA
COMBUSTION
FAN MOTOR
FLA
POWER
SUPPLY
DISCONNECT
SIZE*
Min Max RLA LRA Qty Hp FLA MCA MOCP† FLA LRA
004
208/230-1-60
Std
187 254 16.2 96.0 1 1 /
4
1.4
3.5
.6
24.5/24.5 30/30 23/23 106/106
Alt 4.9 26.6/26.6 35/35 26/26 111/111
208/230-3-60
Std
187 254 10.2 75.0 1 1 /
4
1.4
3.5
.6
17.7/17.7 25/25 17/17 85/85
Alt 4.9 19.1/19.1 25/25 19/19 90/90
High 5.2 19.4/19.4 25/25 19/19 109/109
460-3-60
Std
414 508 4.4 40.0 1 1 /
4
0.8
1.3
.3
7.6 15 7 48/48
Alt 2.1 8.4 15 8 48/48
High 2.6 8.9 15 9 57/57
575-3-60
Std
518 632 3.7 31.0 1 1 /
4
0.8
1.3
.3
6.3 15 7 35
Alt 2.1 6.9 15 8 37
High 2.6 7.3 15 7 45
005
208/230-1-60
Std
187 254 23.3 118.0 1 1 /
4
1.4
3.5
.6
34.0/34.0 40/40 32/32 129/129
Alt 4.9 35.4/35.4 45/45 34/34 133/133
208/230-3-60
Std
187 254 15.4 90.0 1 1 /
4
1.4
3.5
.6
24.2/24.2 30/30 23/23 101/101
Alt 4.9 25.6/25.6 30/30 25/25 105/105
High 5.2 25.9/25.9 30/30 25/25 124/124
460-3-60
Std
414 508 8.3 45.0 1 1 /
4
0.8
1.8
.3
13.0 20 13 51
Alt 2.1 13.3 20 13 53
High 2.6 13.8 20 13 62
575-3-60
Std
518 632 6.4 36.0 1 1 /
4
0.8
1.8
.3
10.1 15 10 41
Alt 2.1 10.3 15 11 42
High 2.6 10.7 15 10 50
006
208/230-1-60
Std
187 254 28.8 147 1 1 /
4
1.4
5.9
.6
43.3/43.3 60/60 42/42 161/161
Alt 6.6 44.0/44.0 60/60 42/42 184/184
208/230-3-60
Std
187 254 16.3 114 1 1 /
4
1.4
5.9
.6
27.3/27.3 35/35 29/29 128/128
Alt 5.2 26.6/26.6 35/35 26/26 148/148
High 7.5 28.9/28.9 35/35 29/29 174/174
460-3-60
Std
414 508 7.4 64 1 1 /
4
0.8
3.1
.3
13.2 20 13 72
Alt 2.6 12.7 15 12 81
High 3.4 13.5 20 13 94
575-3-60
Std
518 632 6.2 62 1 1 /
4
0.8
3.1
.3
10.9 15 11 58
Alt 3.0 10.5 15 10 66
High 3.4 12.6 15 11 76
007
208/230-3-60
Std
187 254 23.6 146 1 1 /
4
1.4
5.2
.6
30.2/30.2 35/35 29/29 180/180
High 7.5 32.5/32.5 40/40 32/32 205/205
460-3-60
Std
414 508 10.6 73 1 1 /
4
0.6
2.6
.3
15.4 20 15 90
High 3.4 16.1 20 16 103
575-3-60
Std
518 632 8.5 58.4 1 1 /
4
0.6
2.6
.3
12.3 15 13 72
High 3.4 12.9 20 14 82
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
= 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
452 + 464 + 455
3
=
1371
3
% Voltage Imbalance = 100 x
7
457
IMPORTANT: If the supply voltage phase imbalance is more
than 2%, contact your local electric utility company immediately.