The overcurrent relay library is a collection of binary file that stores the parameters of curves for overcurrent relays, fuses and reclosers. These files have file extension of .RLY.
The following .RLY files are shipped with this version:
ABB.rly
AREVA.rly
ASPEN_Taps.rly
BASLER.RLY
BECKWITH.RLY
BUSSMANN.RLY
Calor_Emag.rly
CHANCE.RLY
Combined_Tech.rly
Cooper.rly
Crompton.rly
Cutler_Hammer.rly
Edison.rly
Elastimold.rly
ElectroFusi.rly
Federal_Pioneer.rly
Fuji.rly
G&W_Electric.rly
GE.rly
Hi_Tech.rly
Hitachi.rly
Hubbell.rly
JOSLYN.RLY
KEARNEY.RLY
Littelfuse.rly
Merlin_Gerin.rly
Misubishi.rly
MULTILIN.RLY
Nu-Lec.rly
NxtPhase.rly
Omron.rly
REYROLLE.RLY
RTE.rly
S&C.rly
Schneider_Electric.rly
SEL.rly
SHAWMUT.RLY
Siba.rly
SIEMENS.RLY
Southern_States.rly
STANDARD.RLY
Toshiba.rly
ZIV.rly
There are over 3000 sets of curves in these files. Please refer to the on-line help OC Curves List for a complete list of devices in these files.
You can use the ASPEN Overcurrent Relay Editor to create your own relay curves. Please refer to the on-line help OC Relay Help for more information.
LIBRARY DIRECTORY
When you install OneLiner, the setup program copies the above .RLY files to a dedicated directory called the Library Directory. (Starting with version 12, the distance relay library and the line-table file must also reside in this Library Directory.) The default path of the Library Directory varies depending on your computer’s operating system. In most cases, it is c:\Document and Settings\All Users\ASPEN1lPF_LIB. You can change the Library Directory at any time with the OneLiner Configuration Program.
Within OneLiner you can select curves in any of these files. The tool that facilitates access to the curves is called the Curve Selector.
MANAGING THE OVERCURRENT RELAY LIBRARY
Use a common library for all users: In an organization with many OneLiner users, we strongly recommend that you store the .RLY files, the distance relay library file (usually ASPEN.DRL) and the line-table file (usually ASPEN.LTB) in a file-server directory and make that directory the Library Directory for all the users. This practice will greatly simplify the task of keeping the library files up to date.
Do not edit the .RLY files provided by ASPEN. The reason is that these files will be automatically overwritten when you install a maintenance update from ASPEN.
Store curves you made or modified in separate files. If you wish to add relay curves or damage curves to the relay library, we recommend that you store them in separate .RLY files. You will be able to access the curves you created once you move these custom .RLY files to the Library Directory.
VERIFYING THE CURVES
The curves within the overcurrent relay libraries were created by ASPEN and by users like you. ASPEN has not verified the correctness of all the curves. It is important that you check the curves against manufacturers' specifications before you use them in OneLiner.
If you have created new relay curves that may be useful to other users, you are urged to submit them to ASPEN for distribution. We also welcome suggestions on which relays and fuses that you would like to see added to the relay libraries.