Installation - Electrical
PKG-SVX027A-EN
37
Selection Procedures
•
RLA = Rated Load Amps
•
Compressor LRA = Locked Rotor Amps
•
Compressor Input = VFD drive Input
•
Compressor Output = VFD drive output
•
Voltage utilization range is ±10%
Determination of Minimum Circuit Ampacity (MCA)
MCA = 1.25 x Largest motor amps/VFD Input + the sum of
the remaining motor amps.
Determination of Max Fuse (MFS) and Max
Circuit Breaker (MCB) sizes
MFS and MCB = 2.25 x Largest motor amps (RLA)/VFD
input) + the sum of the remaining motor amps.
If the rating value calculation does not equal a standard
over current protective device rating, use the next lower
standard rating as the maximum.
Table 14.
Number of compressors
MSC
SCWMN
04L
SCWMN
040
SCWMN
05L
SCWMN
050
SCWMN
06L
SCWMN
060
SCWMN
07L
SCWMN
070
SCWMN
08L
SCWMN
080
66cc - ZPV0662
1
0
1
0
1
0
1
0
1
0
96cc - ZPV0962
0
1
0
1
0
1
0
1
0
1
ZP154KCE-TE
0
0
2
2
0
0
3
3
0
0
ZP181KCE-TE
1
1
0
0
2
2
0
0
3
3
Table 15. Number of fans/unit
MSC
40 Ton
50 Ton
60 Ton
70 Ton
80 Ton
Fans
3
3
4
5
5
*40-50 qty(4) fans optional
*70-80 qty(6) fans optional
Table 16. Compressor electrical data
200
460
200
460
RLA
LRA
RLA
LRA
INPUT
OUTPUT
INPUT
OUTPUT
15 Ton
ZP181KCE-TE
55.77
340
23.77
110
-
-
-
-
96CC-ZPV0962 (vfd)
-
-
-
-
56
58
30
31
Table 17. Fan motor electrical data
200
460
INPUT
INPUT
Drive (K3G500) - Motor (M3G150-IF)
18.6
9
