ABB Distribution Protection Unit 1500R
10-11
Optional Features
9/99
website:www.abb.com/papd
CurveGen Software Release 1.0
PC Requirements
386 processor or higher
Disk Space:
200K in specified Directory
6 MB in Windows/System Directory
Memory:
480K RAM in the lower 640K for setup
Installation
Step 1: While in the windows desktop, insert disk 1 of 2 into drive a:
Step 2: Click on File.
Step 3: Click on Run.
Step 4: Type a:\setup and press enter.
Step 5: Follow the installation instructions.
Step 6: If you encounter errors during the installation, go into your windows/system directory and delete the
following files:
0C25.DLL
COMDLG16.DLL
TABCTL.OCX
THREED.OCX
VCFI16.OCX
Repeat installation from Step 1.
Using CurveGen
Click on the CurveGen 1.0 icon to run CurveGen. At this point, the user has two options. Curve coefficients can be
calculated by the software by manually entering data points.
The standard equations for timing curves are shown below:
Trip Time (ANSI) = (A/(M
p
-C)+B) x ((14n-5)/9)
Trip Time (IEC) = (A/(M
p
-C)+B) x n
Where A, B, C and P are the coefficients to be computed and/or entered
n = time dial
M = Relay current in multiples of tap setting