Carrier 38AUZ User Manual download pdf (Page 13)

Table 5 — Electrical Data — 38AUZ*07-14 60 Hz Units

LEGEND

UNIT

SIZE

38AU

FACTORY-

INSTALLED

OPTION

NOMINAL

VOLTAGE

RANGE*

COMPRESSOR

FAN MOTORS

(Qty 2)

POWER

SUPPLY

V-Ph-Hz MIN MAX RLA LRA FLA (ea) LRA (ea) MCA MOCP

Z*07

NONE OR DISCONNECT

CONVENIENCE OUTLET

208/230-3-60 187 253 19 123 1.5 3.7 25.2 45

NONE OR DISCONNECT

CONVENIENCE OUTLET

460-3-60 414 506 9.7 62 0.8 1.9 12.9 20

NONE OR DISCONNECT

CONVENIENCE OUTLET

575-3-60 518 633 7.4 50 0.6 1.6 9.9 15

Z*08

NONE OR DISCONNECT

CONVENIENCE OUTLET

208/230-3-60 187 253 25 164 1.5 3.7 32.7 50

NONE OR DISCONNECT

CONVENIENCE OUTLET

460-3-60 414 506 12.2 100 0.8 1.9 16.0 25

NONE OR DISCONNECT

CONVENIENCE OUTLET

575-3-60 518 633 9.0 78 0.6 1.6 11.8 20

Z*12

NONE OR DISCONNECT

CONVENIENCE OUTLET

208/230-3-60 187 253 30.1 225 1.5 3.7 39.1 60

NONE OR DISCONNECT

CONVENIENCE OUTLET

460-3-60 414 506 16.7 114 0.8 1.9 21.7 30

NONE OR DISCONNECT

CONVENIENCE OUTLET

575-3-60 518 633 12.2 80 0.6 1.6 15.8 25

Z*14

NONE OR DISCONNECT

CONVENIENCE OUTLET

208/230-3-60 187 253 48.1 245 1.5 3.7 61.6 80

NONE OR DISCONNECT

CONVENIENCE OUTLET

460-3-60 414 506 18.6 125 0.8 1.9 24.0 30

NONE OR DISCONNECT

CONVENIENCE OUTLET

575-3-60 518 633 14.7 100 0.6 1.6 19.0 30

FLA —

Full Load Amps

LRA —

Locked Rotor Amps

MCA —

Minimum Circuit Amps

MOCP —

Maximum Overcurrent

Protection

NEC —

National Electrical Code

RLA —

Rated Load Amps

*Units are suitable for use on electrical systems where voltage supplied to

the unit terminals is not below or above the listed limits.

NOTES:

1. The MCA and MOCP values are calculated in accordance with the NEC,

Article 440.

2. Motor RLA and LRA values are established in accordance with Underwriters’

Laboratories (UL), Standard 1995.

3. The 575-v units are UL, Canada-listed only.

4. Convenience outlet is available as a factory-installed option and is 115-v,

1 ph, 60 Hz.

5. 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 percentage

of voltage imbalance.

Example: Supply voltage is 230-3-60

AB = 224 v

BC = 231 v

AC = 226 v

Average Voltage =

(224 + 231 + 226)

681

=227

Determine maximum deviation from average voltage.

(AB) 227 – 224 = 3 v

(BC) 231 – 227 = 4 v

(AC) 227 – 226 = 1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

%VoltageImbalance =100 x

227

=1.76%

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.

% Voltage Imbalance = 100 x

max voltage deviation from average voltage

average voltage

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Carrier 38AUZ User Manual Page 13

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