Electrical Data - Carrier 50TFQ008-012 Product Data

Electrical data

UNIT NOMINAL IFM
50TFQ V-PH-Hz TYPE
008 400-3-50 STD
009 400-3-50 STD
012 400-3-50 STD
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM — Indoor-Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
— National Electrical Code (U.S.A. Standard)
NEC
OFM — Outdoor-Fan Motor
RLA — Rated Load Amps
*Heaters are field installed only.
†Used to determine minimum disconnect per NEC (U.S.A. Standard).
**Heater capacity (kW) is based on heater voltage of 400 v. If power
distribution voltage to unit varies from rated heater voltage, heater kW
will vary accordingly.
††Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the over-
current protective device for the unit shall be fuse or HACR
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 per-
centage of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
30
VOLTAGE COMPRESSOR
RANGE (each)
Min Max RLA LRA
360 440 6.7 42.0
360 440 7.2 52.5
360 440 9.2 59.6
ELECTRIC HEAT*
OFM IFM
FLA FLA
Nominal
FLA
kW**
—
9.6 13.9
11.5 16.6
0.6 2.6
19.3 27.9
22.9 33.1
28.9 41.7
—
9.6 13.9
11.5 16.6
0.6 2.6
19.3 27.9
22.9 33.1
28.9 41.7
—
11.5 16.6
19.3 27.9
0.6 3.4
22.9 33.1
28.9 41.7
34.7 50.1
Example: Supply voltage is 400-3-50.
AB = 393 v
BC = 403 v
AC = 396 v
Average Voltage =
Determine maximum deviation from average voltage.
(AB) 397 – 393 = 4 v
(BC) 403 – 397 = 6 v
(AC) 397 – 396 = 1 v
Maximum deviation is 6 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
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.
DISCONNECT
POWER SUPPLY
MCA MOCP FLA
— 18.9 20†† 20
36.3 40†† 36
39.6 40†† 39
53.8 60†† 52
60.3 70 58
71.0 80 68
— 20.0 20†† 21
37.4 40†† 37
40.8 45†† 40
54.9 60†† 53
61.4 70 59
72.1 80 69
— 25.3 30†† 26
46.1 50†† 46
60.2 70 59
66.7 70 65
77.4 80 74
87.9 90 84
393 + 403 + 396
3
1192
=
3
= 397
6
397
= 1.5%
SIZE†
LRA
108
122
125
136
141
150
129
143
146
157
162
171
152
169
180
186
194
203