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ELECTRICAL DATA — 558D090-150 (cont)
UNIT
558D
NOMINAL
V-PH-Hz
IFM
VOLTAGE
RANGE
COMPR
(ea)
OFM IFM
ELECTRIC
HEAT*
POWER SUPPLY
DISCONNECT
SIZE†
Min Max RLA LRA Qty Hp FLA FLA Nom kW** FLA MCA MOCP†† FLA LRA
150
(12
1
⁄
2
Tons)
208/230-3-60
Std
187 254 22.3 142.0 2
1
⁄
4
1.4
10.6
— — 63.6/ 63.6 70/ 70 67/ 67
375/375
7.8/10.4 21.7/ 25.0 63.6/ 63.6 70/ 70 67/ 67
12.0/16.0 33.4/ 38.1 63.6/ 63.6 70/ 70 67/ 67
24.0/32.0 66.7/ 74.2 96.6/109.5 100/110 89/101
31.8/42.4 88.4/102.0 123.7/140.8 125/150 114/129
37.5/50.0 104.2/120.3 143.5/133.5 150/150 132/151
Alt 15.0
— — 68.0/ 68.0 80/ 80 72/ 72
398/398
7.8/10.4 21.7/ 25.0 68.0/ 68.0 80/ 80 72/ 72
12.0/16.0 33.4/ 38.1 68.0/ 68.0 80/ 80 72/ 72
24.0/32.0 66.7/ 74.2 102.1/115.0 110/125 94/106
31.8/42.4 88.4/102.0 129.2/146.3 150/150 119/135
37.5/50.0 104.2/120.3 149.0/139.0 150/175 137/156
460-3-60
Std
414 508 10.4 72.0 2
1
⁄
4
0.8
4.8
— — 29.6 40 31
190
16.5 19.8 30.8 40 31
27.8 33.4 47.8 50 44
33.0 39.7 55.6 60 51
41.7 50.2 68.7 70 63
50.0 60.1 66.1 80 75
Alt 7.4
— — 32.2 45 34
201
16.5 19.8 34.1 45 34
27.8 33.4 51.0 60 47
33.0 39.7 58.9 60 54
41.7 50.2 71.9 80 66
50.0 60.1 69.4 80 78
575-3-60
Std
518 632 9.6 58.5 2
1
⁄
4
0.8
4.8
— — 26.6 30 28
154
18.0 17.0 26.6 30 28
36.0 34.0 47.5 50 44
54.0 51.0 56.0 60 63
Alt 7.4
— — 28.6 35 30
162
18.0 17.0 28.7 35 30
36.0 34.0 50.1 50 46
54.0 51.0 58.6 70 66
LEGEND AND NOTES FOR ELECTRICAL DATA TABLES ON PAGES 49-54
LEGEND
FLA — Full LoadAmps
HACR — Heating, Air Conditioning and Refrigeration
IFM — Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum CircuitAmps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
*Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 480 v, and
575 v. Heaters are ratedat 240 v, 480 v, and 575 v. If powerdistribution voltage
to unit varies from rated heater voltage, heater kW will vary accordingly. To de-
termine heater capacity at actual unit voltage, multiply 240 v, 480 v, or 575 v
capacity by multipliers found in Electric Heat Multiplication Factors table on
page 48.
†Used to determine minimum disconnect size per NEC.
**Heaters are field installed only.
††Fuse or HACR circuit breaker.
Fusing in single point box provides the required branch circuit protection.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NECArticles 430 and 440), the overcurrent protective de-
vice for the unit shall be fuse or HACR breaker. The 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 of voltage
imbalance.
max voltage deviation from average voltage
% Voltage Imbalance = 100 x
average voltage
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
=
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 − 452=5v
(BC) 464 − 457=7v
(AC) 457 − 455=2v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 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%, contact
your local electric utility company immediately.
3. MCAcalculation for units withelectric heaters over 50 kW = (1.25 x IFM amps)
+ (1.00 x heater FLA).
036-150 Only 036-072 Only
090-150 Only 180-300 Only 180-300 Only
52