Selection Procedures - Trane IntelliPak SCWF 20 Installation, Operation And Maintenance Manual

I I n n s s t t a a l l l l a a t t i i o o n n - - E E l l e e c c t t r r i i c c a a l l
N N o o t t e e : : Unit transformers IT1, IT3, IT4 and IT5 are sized
to provide power to the unit only.

Selection Procedures

RLA = rated load amps
Compressor LRA = locked rotor amps
Fan motor LRA = locked rotor amps, N.E.C. Table 430 -
150
FLA = full load amps, N.E.C. Table 430 - 150
Voltage utilization range is ±10%
Determination of minimum circuit ampacity (MCA).
MCA = 1.25 x largest motor amps/VFD amps (FLA or
RLA) + the sum of the remaining motor amps.
Table 25. Number of compressors per unit
SCRF/SIRF
25 - 29
SCWF/SIWF
29 - 32
10 HP 1
15 HP 1
Table 26. Compressor Electrical Data
SCWF/SIWF
200V
HP RLA LRA
10 41.4 267
15 56.9 351
Table 27. Fan motor electrical data
HP TYPE
OPD
5
TEFC
OPD
7.5
TEFC
OPD
10
TEFC
OPD
15
TEFC
OPD
20
TEFC
OPD
25
TEFC
OPD
30
TEFC
44
30 - 35 40
35 - 38 42 - 46
3 2
- 1
460V 575V
RLA LRA RLA
18.6 142 15.8
25.5 197 23.1
200V
FLA LRA
15.3 109.0
15.2 128.8
23.3 199.0
22.1 164.0
29.5 260.0
29.5 216.0
43.4 271.0
42.5 288.0
57.0 350.0
55.5 402.0
70.0 432.0
71.0 523.0
82.2 514.0
81.0 560.0
Determination of maximum fuse size (MFS) and
maximum circuit breaker size (MCB):
MFS and MCB = 2.25 x largest motor amps (FLA or
RLA) + the sum of the remaining motor amps.
For units with the dual power option, there are two
electrical circuits that need calculations using the
previous formulas:
• Circuit #1— fans
• Circuit #2— compressors
If the rating value determined does not equal a
standard current rating of over current protective
device, use the next lower standard rating for the
marked maximum rating.
50
52 - 58 65 - 72
- 1
3 3
200V
LRA HP RLA
103 10 41.4
146 15 56.9
460V
FLA LRA
6.6 48.0
6.7 56.0
9.7 84.8
9.6 70.9
12.6 118.0
12.8 103.0
18.9 118.0
18.5 125.0
24.5 156.0
24.2 175.0
30.5 190.0
30.5 188.0
36.6 252.0
38.0 274.0
60
80 90 100
- - 2
4 5 4
SCRF/SIRF
460V
LRA RLA LRA
267 18.6 142
351 25.5 197
575V
FLA
5.2
5.3
7.8
7.7
10.1
10.3
15.1
15.0
19.6
19.4
24.5
24.5
29.0
29.2
SCXF-SVX01Q-EN
110
-
6
575V
RLA LRA
15.8 103
23.1 146
LRA
40.0
44.8
61.4
56.9
72.3
83.9
95.9
102.0
126.0
140.0
155.0
140.0
200.0
177.0