Electrical Data - Bryant 588A Manual

UNIT
V-PH-Hz
588A
Min
018 208/230-1-60 187
024 208/230-1-60 187
208/230-1-60 187
030
208/230-3-60 187
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
460-3-60 414
LEGEND
AWG — American Wire Gage
CSA — Canadian Standards Association
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection (fuses or HACR-type
circuit breaker)
NEC — National Electrical Code
RLA — Rated Load Amps
*Fuse or HACR breaker.
†Minimum wire size is based on 60 C copper wire. If other than 60 C is
used, determine size from NEC. Voltage drop of wire must be less than
2% of rated voltage.
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. The CSA
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
max voltage deviation from average voltage
= 100 x
VOLTAGE
COMPRESSOR
RANGE
Max RLA LRA
253 7.6 45
253 12.4 61
253 14.4 82
253 9.4 66
253 18.0 96
253 11.7 75
506 5.6 40
253 20.4 104
253 14.0 91
506 6.4 42
253 26.4 129
253 15.0 99
506 8.2 50
253 32.1 169
253 19.3 123
506 10.0 62
average voltage

ELECTRICAL DATA

COND.
INDOOR
FAN
FAN
MOTOR
FLA FLA
0.7 1.8
0.7 2.0
1.4 2.0
1.4 2.0
1.4 2.8
1.4 2.8
0.8 1.4
1.4 4.0
1.4 4.0
0.8 2.0
2.1 5.0
2.1 5.0
1.1 2.3
2.1 6.8
2.1 6.8
1.1 3.2
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
maximum 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*
12.0 15 14
18.2 30 12
21.8 30 10
15.5 25 12
26.7 40 10
18.8 30 12
9.2 10 14
30.9 50 8
22.9 35 10
10.8 15 14
40.1 60 6
25.9 40 10
13.7 20 14
49.0 60 6
33.0 50 8
16.8 25 12
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
=
3
= 457
7
457
= 1.53%
MAX WIRE
LENGTH
(ft)
75
80
100
80
90
65
100
100
85
100
100
75
100
100
90
100