CVHE-SB-32A 87
The Current Transformers should conform to the following resistance tables:
For Single Stage CTs:
Two-Stage CTs:
Two-stage CTs are used on systems that have primary voltages in excess of 600 VAC or line
currents higher than 936 amps. The first-stage CT part numbers are in the X-13580047 and X-
13580048 families. The second stage is a custom current transformer (X-13580266-01) which
has a transformation ratio of 3.6A:0.1A. The secondary of this transformer is then applied to the
Starter module.
Part Number CT Size
Winding Resistance
(±±10%)
X-13580253-01 100 A 23 Ω
X-13580253-02 150 A 35 Ω
X-13580253-03 200 A 46 Ω
X-13580253-04 275 A 67 Ω
X-13580253-05 400 A 68 Ω
X-13580253-06 500 A 84 Ω
X-13580253-07 700 A 128 Ω
X-13580253-08 1000 A 235 Ω
X-13580253-09 50 A 12 Ω
X-13580253-10 75 A 17 Ω
Trane Part Number Resistance in Ohms
X-13580266-01 Primary: 0.020
red and brown leads
Secondary: 5.5
black and white leads
X-13580047-01 X1 to X4 0.468 X1 to X3 0.374 X1 to X2 0.312
X-13580047-02 X1 to X4 0.697 X1 to X3 0.565 X1 to X2 0.502
X-13580048-01 X1 to X4 0.031 X1 to X3 0.028 X1 to X2 0.023
X-13580048-02 X1 to X4 0.076 X1 to X3 0.065 X1 to X2 0.054
X-13580048-03 X1 to X4 0.104 X1 to X3 0.086 X1 to X2 0.069
X-13580048-04 X1 to X4 0.170 X1 to X3 0.136 X1 to X2 0.119
X-13580048-05 X1 to X3 0.255 X1 to X2 0.204 N/A
X-13580271-01 0.026
X-13580272-01 0.031
X-13580272-02 0.044
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