Trip curves – Rockwell Automation 592- E300 Overload Relay User Manual User Manual
Page 83
Rockwell Automation Publication 193-UM015B-EN-P - June 2014
83
Protective Trip and Warning Functions Chapter 5
Trip Curves
The following figures illustrate the E300 Electronic Overload Relay’s time-
current characteristics for trip classes 5, 10, 20, and 30.
Figure 41 - Time-Current Characteristics for Trip Classes 5, 10, 20, & 30
For trip class time-current characteristics other than 5, 10, 20, or 30, scale the
Class 10 trip time according to the following table:
Table 61 - Time-Current Characteristic Scaling Factors
Trip Class
Trip Class 10
Multiplier
Trip Class
Trip Class 10
Multiplier
Trip Class
Trip Class 10
Multiplier
5
0.5
14
1.4
23
2.3
6
0.6
15
1.5
24
2.4
7
0.7
16
1.6
25
2.5
8
0.8
17
1.7
26
2.6
9
0.9
18
1.8
27
2.7
10
1.0
19
1.9
28
2.8
11
1.1
20
2.0
29
2.9
12
1.2
21
2.1
30
3.0
13
1.3
22
2.2
1
10
100
1000
100%
1000%
Time (seconds)
Trip Class 5
Current (% FLA)
Trip Class 30
1
10
100
1000
10000
100%
1000%
Current (% FLA)
Time (seconds)
1
10
100
1000
10000
100%
1000%
Trip Class 20
Time (seconds)
Current (% FLA)
1
10
100
1000
100%
1000%
Time (seconds)
Trip Class 10
Current (% FLA)
Cold Trip
Hot Trip