Electrical Data - Bryant 588A User Manual

UNIT
V-PH-HZ
588A
Min
018
024
030
036 208/230-1-60 187
042
048
060
030
036
042 208/230-3-60 187
048
060
036
042
460-3-60 414
048
060
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
7.6 45
12.4 61
14.4 82
253 18.0 96
20.4 104
26.4 129
32.1 169
9.4 66
11.7 75
253 14.0 91
15.0 99
19.3 123
5.6 40
6.4 42
506
8.2 50
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 2.8
1.4 4.0
2.1 5.0
2.1 6.8
1.4 2.0
1.4 2.8
1.4 4.0
2.1 5.0
2.1 6.8
0.8 1.4
0.8 2.0
1.1 2.3
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
26.7 40 10
30.9 50 8
40.1 60 6
49.0 60 6
15.5 25 12
18.8 30 12
22.9 35 10
25.9 40 10
33.0 50 8
9.2 10 14
10.8 15 14
13.7 20 14
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
90
100
100
100
80
65
85
75
90
100
100
100
100