Allen-Bradley E300 - Page 315

Rockwell Automation Publication 193-UM015E-EN-P - October 2015 315
Protective Trip and Warning Functions Chapter 6
Figure 210 - Time-Current Characteristics for Trip Classes 5, 10, 20, and 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 230 - Time-Current Characteristic Scaling Factors
Automatic/Manual Reset
Overload Reset Mode (Parameter 173) allows you to select the reset mode for the
E300 relay after an overload or thermistor (PTC) trip. If an overload trip occurs
and automatic reset mode is selected, the E300 relay automatically resets when
the value stored in % Thermal Capacity Utilized (Parameter 1) falls below the
value stored in Overload Reset Level (Parameter 174). If manual reset mode is
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