Trane CVHE Information Manual page 48

q The starter has a single CT/phase wired directly
to the starter module.
Select Table 3 if any of the following conditions are
met:
q The unit has an RLA over 935 Amps.
q The unit has a 38" wide "Starter By Others"
control panel.
q The starter has two CTs/phase wired to the starter
module (greater than 600 volts).
3 Using Table 2 or Table 3 (determined from Step
2), determine the CT Meter Scale Rating based
on the RLA from Step 1.
4 Calculate the CT factor using one of the following
two equations:
If Table 2 was used: CT Factor = (Motor RLA/CT
Meter Scale Rating) x 100
If Table 3 was used: CT Factor = (Motor RLA/CT
Meter Scale Rating) x 139
5 Refer to Table 4 . Determine Current Overload
Settings #1 and #2 based on the CT Factor
calculated in Step 4.
Verify Current Overload Setting #1.
Verify Current Overload Setting #2.
Information Manual
Table 2
CT Factor = (Motor RLA/CT Motor RLA/CT Meter Scale Rating)
X 100
Motor RLA CT Part No.
34-50A
51-67A
68-100A
101-134A
135-184A
x13580253
185-267A
268-334A
335-467A
468-667A
668-935A
Machine Configuration
CT Meter Scale
Ext Rating
09 50A
10 75A
01 100A
02 150A
03 200A
04 275A
05 400A
06 500A
07 700A
08 1000A
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