Carrier 50CD - Page 8

WITHOUT ELECTRIC HEAT
UNIT CONTROL BOX
C — Contactor
Comp — Compressor
Gnd' P Equipment Ground
Fu — Fuse
TB — Terminal Block
_Factory Wiring
_ Field Power Wiring
Field Splice
WITH ELECTRIC HEAT
SINGLE POINT BOX
Fig. 11 — Field Power Wiring Connections
Table 2 — Electrical Data
50CD/CH008
NOMINAL
V-PH-HZ
VOLTAGE
RANGE
COMPR OFM
IFM
ELECTRIC HEATERS
POWER SUPPLY
50CD008
50CH008 |
50CD008
50CH008
Kw
p—
FLA Kw
FLA
Min Ckt i MOCP
Arr
Min Ckt J MOCP
ips
Min
Max RLA
LRA | FLA
Hp
FLA |
208/230-3-60
j
187
254
I
I
32 5
j
183 29
j
1 80
1
- . L_.-_
55/55 i 60/60* 55/55
60/60*
93] 20-23
93 20-23 55/55 60/60 55/55 60/60
186 j 40-46 158
33-38
60/70
“60/70"]
55/60
60/60
28 1 | 59-68
31 5 j
68-76 85/95
80/90 |
95/105 | 90/100
460-3-60
i
414
508
15 2 |
91 1
:
1 5 ;
1
1
2 9
r
r - i
25
35 * ; 25 |
35*
97 j 11 7
97 11 7
25
35 i 25
35
160 i 193
16 0 j
19 3 30
35 j 30
35
19 4
23 4 31 5 :
37 9 40
35 55
45
29 6 35 7
50
_ 4 5 . . . i
FLA — Full Load Amps
Hp — Horsepower
IFM — Indoor Fan Motor
LRA — Locked Rotor Amps
MOCP — Maximum Overcurrent Protection
OFM — Outdoor Fan Motor
RLA — Rated Load Amps
*Fuse only
Example: Supply voltage is 460-3-60.
abc AB = 452 volts
BC = 464 volts
AC = 455 volts
Average Voltage
452 + 464 + 455
1371
= 457
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 unbalance:
% Voltage Unbalance = 100 x ~=j - 1.53%
This amount of phase unbalance is satisfactory
as it is below the maximum allowable 2%.
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