User manual

Chapter 6 – Configuring Cyber Breaker the Virtual Circuit Breaker
60 ePower Power Distribution Unit User Manual, Revision 1.1
Example 2
In this example, a Virtual Circuit Breaker on a 20A-rated outlet starts with
a trip delay of 400 seconds (a=400) at 16A (c=16, the breaker trip value).
The trip delay decreases until it reaches zero seconds at 34A or greater.
A negative t
min
value (d=-1.81) is used to fine-tune the trip curve to a zero
crossing at 34A.
The equation for the Example 2 trip delay curve is:
Figure 6-2 Example 2 – Virtual Circuit Breaker Trip Delay Curve
ƒ (C) = 400 • e
-0.3(
C
-16)
-1.81
[]