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

Installation - Electrical

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.
Determination of maximum fuse size (MFS) and maximum
circuit breaker size (MCB):
Table 18. Number of compressors per unit
SCWF/SIWF 29 - 32
10 HP 1
15 HP 1
Table 19. Compressor Electrical Data
HP
10
15
Table 20. 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
OPD
40
TEFC
38
35 - 38 42 - 46
3 2
- 1
200V
RLA LRA
41.4 267
56.9 351
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
109.0 615.0
111.0 758.0
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.
52 - 58 65 - 72
- 1
3 3
SCWF/SIWF
460V
RLA LRA
18.6 142
25.5 197
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
49.0 330.0
47.4 320.0
80 90 100
- - 2
4 5 4
575V
RLA
15.8
23.1
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
40.0
38.0
SCXF-SVX01T-EN
110
-
6
LRA
103
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
270.0
280.0