Table 6, Table 7, Current transformer – Trane RTWA 70-125 TON User Manual
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RLC-SVD03A-EN
29
Current Transformer
Table 6
Trip Times Vs. % Current
MOTOR CURRENT
(% RATED RLA)
MINIMUM
TRIP TIME (SEC)
NOMINAL
MAXIMUM
127.7 or below
No trip
No Trip
No Trip
132.0
27.2
No Trip
No Trip
132.1
27.2
30.08
No Trip
140.0 (must trip pt.)
22.8
25.28
28.09
150.0
18.8
20.48
22.89
160.0
16.0
17.28
19.29
170.0
14.0
15.28
16.89
180.0
12.4
13.28
14.89
190.0
11.2
12.08
13.29
200.0
10.4
10.88
12.09
210.0
9.6
10.08
10.89
220.0
8.8
9.28
10.09
230.0
8.0
8.48
9.69
240.0
7.6
8.08
8.89
250.0
7.2
7.68
8.49
260.0
6.8
6.88
7.69
270.0
6.4
6.88
7.29
280.0
6.0
6.48
6.89
290.0
5.6
6.08
6.89
300.0
4.0
5.68
6.49
300.1
4.0
4.08
6.49
310.2 or above
4.0
4.08
4.49
Table 7
Current Transformers Ratings and Resistance
EXT
*
*The current transformer base part number is X13580253. The
numbers in this column are suffixes of the base part number.
RATING
USABLE
RANGE
RESISTANCE
OHMS + 10%
01
100A
66.67 -100A
23.5
02
150A
100 - 150A
35.0
03
200A
134 - 200A
46.0
04
275A
184 -275A
67.0
05
400A
267 - 400A
68.0
09
50A
33.37 - 50A
11.5
10
75A
50 - 75A
17.0