Electrical Data Table / Electrical Heater Data Table - Carrier 40RUM Series Installation, Operation & Maintenance Manual

ELECTRICAL DATA TABLE
Unit
40RUM-07
40RUM-08
40RUM-12
40RUM-14
40RUM-16
Unit
40RUM-07
40RUM-08
40RUM-12
40RUM-14
40RUM-16
Legend and Notes for Electrical Data Table
FLA - Full Load Amps
HP - Horse Power
kW - Kilowatt
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
= 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
Standard Motors
Voltage
400-3-50
400-3-50
400-3-50
400-3-50
400-3-50
Alternate Motors
Voltage
400-3-50
400-3-50
400-3-50
400-3-50
400-3-50
Maximum Deviation From Average Voltage
Average Voltage
392 + 404 + 395
3
1191
= 397V
3
7
= 100 X
397
Fan Motor
Voltage Range
HP (kW)
360-440 2.4
360-440
2.4
360-440 2.9
360-440
2.9
360-440 2.9
Fan Motor
Voltage Range
HP (kW)
360-440 2.4
360-440
2.9
360-440 5.0
360-440
5.0
360-440 5.0
= 1.76%
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Power Supply
FLA MCA MOCP
2.6 3.3 15
2.6 3.3 15
3.8 4.3 15
3.8 4.3 15
3.8 4.3 15
Power Supply
FLA MCA MOCP
2.6 3.3 15
3.8 4.8 15
8.0 10.0 15
8.0 10.0 15
8.0 10.0 15