Carrier 48TFD008-014 User Manual download pdf (Page 60)

ELECTRICAL DATA (With Convenience Outlet) (cont)

LEGEND

*Used to determine minimum disconnect per NEC.

†Fuse or HACR circuit breaker

**Fuse only.

NOTES:

1. In compliance with NEC requirements for multimotor and combina-

tion load equipment (refer to NEC Articles 430 and 440), the overcur-

rent protective device for the unit shall be fuse or HACR breaker.

Canadian units may be fuse or circuit breaker.

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

Example: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

= 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

= 1.53%

This amount of phase imbalance is satisfactory as it is below the

maximum allowable 2%.

UNIT

48TF

NOMINAL

VOLTAGE

IFM

TYPE

VOLTAGE

RANGE

COMPR

(ea)

OFM

(ea)

IFM

COMBUSTION

FAN MOTOR

FLA

POWER SUPPLY

DISCONNECT

SIZE*

Min Max RLA LRA Hp FLA FLA MCA MOCP† FLA LRA

012

(10 Tons)

208/230-3-60

Std

187 254 15.8 130.0

1.4

5.8

49.1/49.1 60/60 50/50 311/311

Alt 7.5 50.8/50.8 60/60 52/52 330/330

High 15.0 58.3/58.3 70/70 61/61 378/378

460-3-60

Std

414 508 7.9 64.0

0.7

2.6

23.7 30 24 154

Alt 3.4 24.5 30 25 193

High 7.4 28.5 30 30 187

575-3-60

Std

518 632 6.6 52.0

0.7

2.6

20.6 25 21 109

Alt 3.4 21.2 25 21 141

High 7.4 24.4 30 25 136

014

(12

Tons)

208/230-3-60

Std

187 254 23.0 146.0

1.4

10.6

71.2/71.2 80/80** 74/74 387/387

Alt 15.0 75.6/75.6 90/80** 79/79 410/410

460-3-60

Std

414 508 10.4 73.0

0.7

4.8

32.3 45 34 194

Alt 7.4 34.9 45 37 205

575-3-60

Std

518 632 8.3 58.4

0.7

4.8

26.3 30 27 156

Alt 7.4 28.4 30 29 165

FLA —

Full Load Amps

HACR —

Heating, Air Conditioning and Refrigeration

IFM —

Indoor (Evaporator) Fan Motor

LRA —

Locked Rotor Amps

MCA —

Minimum Circuit Amps

MOCP—

Maximum Overcurrent Protection

NEC —

National Electrical Code

OFM —

Outdoor (Condenser) Fan Motor

RLA —

Rated Load Amps

= 100 x

max voltage deviation from average voltage

average voltage

Average Voltage =

452 + 464 + 455

1371

IMPORTANT: If the supply voltage phase imbalance is more than 2%,

contact your local electric utility company immediately.

457

Electrical data (cont)

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 79 80

Comments to this Manuals

No comments

Carrier 48TFD008-014 User Manual Page 60

Comments to this Manuals

Related products and manuals for Heat pumps Carrier 48TFD008-014