Specifications

Operations – Fault Protection Adjustments
Trip Unit Current Shaping Adjustments
13
(This curve is for illustration purposes only)
Amperes in Multiples of Rating Plug Value (I
n
)
l
g
= % MAX Rating
0.1
10,000
1, 0 00
100
10
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
1
1 Cycle Time in Seconds
1 Cycle Time in Seconds
1
2
3
5
6
7
4
(1) Continuous Ampere Setting Region
The allowable continuous operating amperes is set to a percent of the
rating plug value. Note that the maximum continuous ampere is set by
the rating plug value, I
n
.
(2) Long Time Delay Region
The long time delay is set to an inverse I
2
t ramp function delay
calibrated at 6 times the rating plug value, I
n
.
(3) Short Time Pickup Region
The short time pickup is set to a multiple of the rating plug value, I
n
.
(4) Short Time Delay Region
The short time delay is set to either a fixed delay (illustrated) or an inverse
I
2
t ramp function delay calibrated at 8 times the rating plug value, I
n
.
(5) Instantaneous Pickup Region
The instantaneous pickup is set to a multiple of the rating plug value, I
n
.
(6) Ground Fault Pickup Region
Ground fault pickup is set to a percent of the max rating.
(7) Ground Fault Delay Region
The ground fault delay is set to either a fixed delay (illustrated) or an
inverse I
2
t ramp function delay calibrated at one half of the MAX rating .