Carrier 50SS018-060, 50SX024-060 owner manual Ð Electrical Data Ð 50SX Units

Page 23

Table 4B Ð Electrical Data Ð 50SX Units

 

 

 

 

 

 

OUTDOOR-

INDOOR-

 

 

AWG 60C

 

UNIT SIZE

 

VOLTAGE RANGE

COMPRESSOR

FAN

FAN

POWER SUPPLY

MAX WIRE

V-PH-Hz

MIN WIRE

50SX

 

 

 

 

MOTOR

MOTOR

 

 

LENGTH (ft)

 

 

 

 

 

 

 

SIZE

 

 

Min

Max

RLA

LRA

FLA

FLA

MCA

MOCP*

 

 

 

 

 

024

208/230-1-60

187

253

12.9

62.5

1.4

2.0

19.5

30

12

75

030

208/230-1-60

187

253

15.0

76.0

1.4

2.6

22.8

30

10

100

 

208/230-1-60

187

253

16.7

95.0

1.4

2.8

25.1

30

10

95

036

208/230-3-60

187

253

10.9

75.0

1.4

2.8

17.8

25

12

70

 

460-3-60

414

506

5.4

40.0

0.8

1.4

9.0

10

14

100

 

208/230-1-60

187

253

20.0

104.0

1.4

3.1

29.5

45

10

80

042

208/230-3-60

187

253

13.9

88.0

1.4

3.1

21.9

30

10

60

 

460-3-60

414

506

6.8

44.0

0.8

1.6

10.9

15

14

100

 

208/230-1-60

187

253

26.4

129.0

1.4

7.2

41.6

60

6

100

048

208/230-3-60

187

253

15.0

99.0

1.4

7.2

27.4

40

10

70

 

460-3-60

414

506

8.2

49.5

0.8

2.3

13.4

20

14

100

060

208/230-1-60

187

253

32.1

169.0

2.1

7.2

49.4

60

6

100

208/230-3-60

187

253

19.3

123.0

2.1

7.2

33.4

50

8

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

AWG

Ð American Wire Gage

BRKR

Ð Breaker

CUL

Ð Canadian Underwriters' Laboratories

FLA

Ð Full Load Amps

HACR

Ð Heating, Air Conditioning and

 

Refrigeration

LRA

Ð Locked Rotor Amps

MCA

Ð Minimum Circuit Amps

MOCP Ð Maximum Overcurrent Protection

NEC

Ð National Electrical Code

RLA

Ð Rated Load Amps

*Fuse or HACR Breaker. ²Carrier Scroll Compressor. **Copeland Scroll Compressor.

NOTES:

1.In compliance with NEC requirements for multimotor and combi- nation load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The CUL 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, de- termine size from NEC.

3.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply volt- age is greater than 2%. Use the following formula to determine the percentage of voltage imbalance.

% Voltage Imbalance

EXAMPLE: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

Average Voltage =

452 + 464 + 455

3

 

 

 

 

 

=

1371

 

 

 

 

3

 

=

457

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

 

7

 

 

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.

max voltage deviation from average voltage

= 100 x

average voltage

23

Image 23
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