Electrical Data Table - Carrier 38AUM Series Installation, Operation & Maintenance Manual

ELECTRICAL DATA TABLE

Single Circuit Unit - 400V-3Ph-50Hz
VOLTAGE RANGE
Unit
MIN
38AUMZ07 360
38AUMZ08 360
Dual Circuit Unit - 400V-3Ph-50Hz
VOLTAGE RANGE
V-Ph-Hz
MIN
38AUMD12 360
38AUMD14 360
38AUMD16 360
Legend and Notes for Electrical Data Table
FLA - Full Load Amps
IFM - Indoor (Evaporator) Fan Motor
LRA - Locked Rotor Amps
MCA - Minimum Circuit Amps
MOCP - Maximum Overcurrent Protection
Application heater kW (Using multiplication factor table in Electric Resistance Heater Data Table)
Unbalanced 3-Phase Supply Voltage
Never operate a motor where phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percentage of voltage imbalance
Maximum Deviation From Average Voltage
= 100 X
Example: Supply Voltage is 400V - 3ph - 60Hz
AB = 392v
Average Voltage =
BC = 404v
AC = 395v
=
Determine maximum deviation from average voltage.
(AB) 397 - 392 =5v
(BC) 404 - 397 =7v
(AC) 457 - 397 =2v
Maximum Deviation is 7v.
Determine Percentage Voltage Imbalance.
% Voltage Imbalance
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
COMP 1
MAX RLA LRA
440 9.7 64
440 12.2 100
COMP 1
MAX RLA LRA
440 7.8 51.5
440 10.6 74
440 12.2 101
Average Voltage
392 + 404 + 395
3
1191
= 397V
3
7
= 100 X
397
COMP 2
RLA LRA
- -
- -
COMP 2
RLA LRA
7.8 51.5
10.6 74
12.2 101
NEC - National Electrical Code
OFM - Outdoor (Condenser) Fan Motor
RLA - Rated Load Amps
HACR - Heating, Air-Conditioning and Refrigeration
◊ Fuse or HACR Circuit Breaker
= 1.76%
Page 30
OFM (ea) POWER SUPPLY
HP FLA MCA
1/4 0.7 13.5
1/3 1.8 18.9
OFM (ea) POWER SUPPLY
HP FLA MCA
1/3 1.8 21.2
1/3 1.8 27.5
1/2 1.7 30.9
MOCP
20
30
MOCP
25
35
40