Electrical Data — Unit 589A - Bryant 588A Installation, Start-Up And Service Instructions Manual

VOLTAGE
UNIT
RANGE
SIZE V-PH-Hz
589A
Min
024 208/230-1-60 187
030 208/230-1-60 187
208/230-1-60 187
036 208/230-3-60 187
460-3-60 414
208/230-1-60 187
042 208/230-3-60 187
460-3-60 414
208/230-1-60 187
048 208/230-3-60 187
460-3-60 414
208/230-1-60 187
060
208/230-3-60 187
LEGEND
AWG — American Wire Gage
FLA — Full Load Amps
HACR — Heating, Air Conditioning and
Refrigeration
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
RLA — Rated Load Amps
*Fuse or HACR Breaker.
† Carrier Scroll Compressor.
**Copeland Scroll Compressor.
NOTES:
1. In compliance with NEC (National Electrical Code) 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. The CGA (Canadian Gas Associa-
tion) units may be fuse or circuit breaker.
2. Minimum wire size is based on 60 C copper wire. If other than
60 C wire is used, or if length exceeds wire length in table, deter-
mine size from NEC.
3. 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-
age of voltage imbalance.
% Voltage imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Table 4B — Electrical Data — Unit 589A
OUTDOOR-FAN
COMPRESSOR
Max RLA LRA
253 12.9 62.5
253 15.0 76.0
253 16.7 95.0
253 10.9 75.0
506 5.4 40.0
253 20.0 104.0
253 13.9 88.0
506 6.8 44.0
253 26.4 129.0
253 15.0 99.0
506 8.2 49.5
253 32.1 169.0
253 19.3 123.0
INDOOR-FAN
MOTOR MOTOR
FLA FLA
1.4 2.0
1.4 2.6
1.4 2.8
1.4 2.8
0.8 1.4
1.4 3.1
1.4 3.1
0.8 1.6
1.4 7.2
1.4 7.2
0.8 2.3
2.1 7.2
2.1 7.2
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 of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maxi-
mum allowable 2%.
IMPORTANT:
If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
—20—
AWG 60 C
POWER SUPPLY
MIN WIRE
SIZE
MCA MOCP*
19.5 30 12
22.8 30 10
25.1 30 10
17.8 25 12
9.0 10 14
29.5 45 10
21.9 30 10
10.9 15 14
41.6 60 6
27.4 40 10
13.4 20 14
49.4 60 6
33.4 50 8
AB = 452 v
BC = 464 v
AC = 455 v
452 464
Average Voltage =
3
1371
=
3
= 457
7
457
= 1.53%
MAX WIRE
LENGTH (ft)
75
100
95
70
100
80
60
100
100
70
100
100
90
455