Digitrip 1150 & 520 Trip Curve Calculator (Time Saver)

[SecondGen]

Automated excel sheets calculate trip times for the EATON Digitrip 1150 and 520 trip units, based on settings you input. This is a very useful tool as it saves a bunch of time having to manually look up curves.



Instructions:

1. Select current sensor size from the pull down menu, choose "5" for Amptector testing.

2. Enter test current multiplier for Long Time Delay (ex. 3 or 6)

3. Choose trip unit settings for Long, Short, Instantaneous, and Ground Fault functions where applicable from the pull down menus. The sheet will automatically calculate your test current and expected min/max trip times.


Tables showing available trip settings and times for all functions are also included. This is a very useful tool that will save you many headaches in the field. Downloads are available through the attachment links below, big thanks to JG for sending these out.