Electrical Data - Bryant 581A/B Product Information Manual

VOLTAGE
NOMINAL
UNIT
RANGE
VOLTAGE
580F
(3 Ph, 60 Hz)
Min Max
208/230 187 253
180 460 414 508
575 518 633
208/230 187 253
210 460 414 508
575 518 632.5 12.1
208/230 187 253
240 460 414 508
575 518 633
208/230 187.2 253
300 460 414 508
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 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 voltage
imbalance.

ELECTRICAL DATA

COMPRESSOR
No. 1 No. 1A No. 2
RLA LRA RLA LRA RLA LRA Qty Hp FLA (ea) Hp
32.1 195 — — 20.7 156
16.4 95 — — 10
12 80 — — 8.2
30.1 225 — — 28.8 195
15.5 114 — — 14.7
80 — — 10.7
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
FLA
3 0.5 1.7 5.0 15.8/15.8
70 3 0.5 0.8 5.0 7.9
54 3 0.5 0.75 5.0 6.0
3 0.5 1.7 5.0 15.8/15.8
95 3 0.5 0.8 5.0 7.9
80 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
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
EXAMPLE: Supply voltage is 460-3-60.
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%, con-
tact your local electric utility company immediately.
192
POWER COMBUSTION
EXHAUST FAN MOTOR
FLA LRA FLA
— — 0.57
4.6 18.8 0.57
— — 0.30
2.3 6.0 0.30
— — 0.57
2.1 4.8 0.57
— — 0.57
4.6 18.8 0.57
— — 0.30
2.3 6.0 0.30
— — 0.57
2.1 4.8 0.57
— — 0.57
4.6 18.8 0.57
— — 0.30
2.3 6.0 0.30
— — 0.57
2.1 4.8 0.57
— — 0.57
4.6 18.8 0.57
— — 0.30
2.3 6 0.30
— — 0.57
2.1 4.8 0.57
average voltage
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
=
3
= 457
7
457
POWER
SUPPLY
MCA MOCP*
82/82 110/110
86/86 110/110
41 50
43 50
31 40
34 40
87/87 110/110
92/92 110/110
44 50
47 60
34 40
36 40
124/124 150/150
129/129 150/150
61 80
63 80
48 60
50 60
138/138 175/175
143/143 150/175
64 80
66 80
54 60
56 70