Carrier 48TJD Specifications download pdf (Page 13)

Table 5 -- Electrical Data

UNIT

48TJ

016

(15 Tons)

020

(18 Tons)

O24

(20 Tons)

028

(28 Tons)

NOMINAL VOLTAGE COMPRESSOR

OFM

VOLTAGE RANGE No. 1 No, 2

(3Ph, 60Hz) Min Max RLA LRA RLA LRA Q_ Hp FLA(ea) Hp

208/230

460

575

208/230

460

575

208/230

460

575

208/230

46O

575

POWER COMBUSTION

IFM EXHAUST FAN MOTOR

FLA FLA LRA FLA

187 253 25.6 190 25.6 190 3 0.5 1.7 3.7 10.5/11.0

4.6 18.8

414 508 13.5 95 13.5 95 3 0.5 0.8 3.7 4.8

2.3 6.0

518 632 10.2 75 10.2 75 3 0.5 0.8 3.0 3.9

2.1 4.8

187 253 33 237 23 184 3 0.5 1.7 5.0 15.8/15.8

4.6 18.8

414 508 16.2 130 10.2 90 3 0.5 0.8 5.0 7.9

2.3 6.0

518 632 12.7 85 9 73 3 0.5 0.8 5.0 6.0

2.1 4.8

187 253 33 237 29.5 237 2 1 6.6 7.5 25.0/25.0

4.6 18.8

414 508 16.2 130 14.1 130 2 1 3.3 7.5 13.0

2.3 6.0

518 632 12.7 85 11.3 85 2 1 3.4 7.5 10.0

2.1 4.8

187 253 47.5 265 33 237 2 1 6.6 10.0 28.0/28.0

4.6 18.8

414 508 22.9 145 16.2 130 2 1 3.3 10.0 14.6

2.3 6.0

518 632 17.9 102 12.7 85 2 1 3.4 10.0 13.0

2.1 4.8

POWER

SUPPLY

MCA MOCP*

0.57 74/74 90/90

0.57 79/79 100/100

0.30 38 50

0.30 40 50

0.57 30 35

0.57 32 40

0.87 88/88 110/110

0.57 90/90 110/110

0,30 41 80

0.30 43 50

0,87 33 45

0.57 35 45

0.57 109/109 125/125

0.57 114/114 125/125

0.30 54 70

0.30 56 70

0.57 44 80

0.57 46 50

0.87 134/134 178/175

0.57 138/138 175/175

0,30 66 80

0.30 68 90

0.57 55 70

0.57 57 70

LEGEND

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

*Fuse or HACR circuit breaker.

cCt os

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. 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 volt-

age imbalance,

% Voltage Imbalance

= 100 x max voltage deviation from average voltage

average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v

A B C BC = 464 v

(_ AC = 455 v

Average Voltage

482 + 464 + 488

1371

=--

= 457

Determine maximum deviation from average voltage.

(AB) 487 - 482 = 8 v

(BC) 464 - 487 = 7 v

(AC) 487 - 488 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x 487

= 1.53%

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

allowable 2%.

I IMPORTANT: If the supply voltage phase imbalance is more than I

2%, contact your local electric utility company immediately.

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Carrier 48TJD Specifications Page 13

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