Carrier 50DF034 - Manual (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 Hp FLA kW FLA MCA MOCP MCA MOCP
15 46 0
_ _ _ _
212 250
_
—
15 46 0 3 11 — — 223 250 — —
208-230/3/60 187 254 63 5 266 63 5 266 3
7 6
(ea)
15
15 46 0
46 0 3 11
45-54 9
45-54 9 125-138
125-138 214-230
223-230 300-300
300-300
— —
15 46 0 — — 75-91 5 208-230 212-212 250-250 156-173 175-200
15 46 0 3 11 75-91 5 208-230 223-223 250-250 156-173 175-200
15 21 0
_ _ _ _
93 110
15 21 0 3 4 8 — — 98 125 — —
460/3/60 414 508 27 5 120 27 5 120 3
3 3
(ea)
15
15 21 0
21 0
3 4 8
54 9
54 9 69
69 113
113
150
150
— —
15 21 0 — — 91 5 115 170 175 __ __
15 21.0 3 4.8 91.5 115 170 175 — —
575/3/60 518 660 22 96 22 96 3
2 7
(ea)
15
15 - 3 3 9
—
-
75
79 90
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
3
3
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.
K
790