Carrier 50DF034 User Manual download pdf (Page 8)

Table 2 — Electrical Data

NOMINAL

VOLTS/PH/HZ

VOLTAGE

RANGE

COMPR

NO. 1

COMPR

NO. 2

OUTDOOR

FAN MTR

INDOOR

FAN MTR

EXHAUST

FAN MTR

HEATERS

POWER SUPPLY*

Circuit 1 Circuit 2

Min

Max RLA

LRA RLA LRA

Oly

FLA Hp

FLA

FLA kW FLA MCA

MOCP

MCA

MOCP

15 46 0

_ _ _ _

212 250

—

46 0 3 11

— —

223 250

—

208-230/3/60 187 254 63 5

266

63 5 266

7 6

(ea)

46 0

3 11

45-54 9

125-138

214-230

223-230

300-300

— —

46 0

— —

75-91 5

208-230 212-212 250-250 156-173

175-200

46 0

75-91 5

208-230 223-223 250-250 156-173

175-200

21 0

_ _ _

93 110

21 0

3 4 8

— —

98 125

— —

460/3/60

414 508

27 5 120

27 5 120 3

3 3

(ea)

21 0

3 4 8

54 9

113

150

— —

21 0

— —

91 5

115 170

175

__ __

21.0 3

4.8

91.5

115

170 175

— —

575/3/60 518 660 22

96 22 96

2 7

(ea)

3 9

—

100

—

Compr — Compressor

FLA — Full Load Amps

Hp — Nominal Horsepower

kW — Kilowatts

LRA — Locked Rotor Amps

MCA — Minimum Circuit Amps

MOCP — Maximum Overcurrent Protection

RLA — Rated Load Amps

*Fuse only

NOTES:

1 All outdoor fan motors are single-phase motors

2 All heaters are 3-phase assemblies

3 Circuit no. 2 is provided as indicated; total unit MCA is the sum of circuit

no 1 MCA and circuit no 2 MCA

4 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 % voltage unbalance

% Voltage Imbalance

max voltage deviation from average voltage

= 100 X ■

Example: Supply voltage is 460-3-60

AB = 452 volts

BC = 464 volts

AC = 455 volts

Average Voltage

452 + 464 + 455

1371

457

average voltage

Determine maximum deviation from average voltage:

(AB) 457 - 452 = 5 volts

(BC) 464 - 457 = 7 volts

(AC) 457 - 455 = 2 volts

Maximum deviation is 7 volts

Determine % voltage imbalance:

% Voltage Imbalance = 100 x= 1 53%

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

mum allowable 2%

Í.

790

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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