Forum,
I have a question regarding drawing TCC curves, given the different settings, especially when I2t is on for either the short time delay or the long time delay. I understand that when I2t is on, the TCC line becomes sloped and joins the different segments of the curves together. However, is there a magic rule of thumb or formula that says what the slope is of these line segments, when I2t is on?
Also on a slightly different note, when I2t is turned on, what does the "seconds" refer to? I believe it refers to seconds at 6x the long time trip in which the breaker will open, but I could be mistaken.
Any help is appreciated.
I have a question regarding drawing TCC curves, given the different settings, especially when I2t is on for either the short time delay or the long time delay. I understand that when I2t is on, the TCC line becomes sloped and joins the different segments of the curves together. However, is there a magic rule of thumb or formula that says what the slope is of these line segments, when I2t is on?
Also on a slightly different note, when I2t is turned on, what does the "seconds" refer to? I believe it refers to seconds at 6x the long time trip in which the breaker will open, but I could be mistaken.
Any help is appreciated.
