Unfortunately, I can't directly provide you with PTW libraries. Sharing or distributing proprietary software or libraries like those for SEL relays would be a violation of copyright and potentially illegal.However, I can guide you on how to legally and reliably obtain the correct PTW libraries for your SEL 700G and SEL 751 relays

1. Contact SKM Systems Analysis, Inc. (PTW Vendor):
This is the primary and recommended method. Contact SKM support directly. Explain your situation (you need libraries for SEL 700G and SEL 751 relays for PTW). They will likely ask for your PTW license information to verify you are a legitimate user and have the appropriate level of support. Why this is best

You'll get the most up-to-date and compatible libraries for your version of PTW, and you'll ensure you're using them legally.

Look for their contact information on their website (skm.com).2. Contact Schweitzer Engineering Laboratories (SEL)

While SEL doesn't directly distribute PTW libraries, they may be able to point you in the right direction, especially if they have a partnership or distribution agreement with SKM. They might have documentation or suggestions on how to best use PTW with their relays.

Visit SEL's website (selinc.com) and look for their contact or support information.3. Check your PTW Subscription/Maintenance Agreement

Most PTW licenses include a subscription or maintenance agreement. This often entitles you to library updates and support. Review your agreement to see how to access these resources. There might be a user portal or download section.

4. Check your existing PTW Installation (as an initial step)



Within PTW itself

Look for a "Library Manager" or "Device Library" option. There might be a way to update or import new device libraries from within the software. Sometimes, libraries are already included but not activated.

Important Considerations and Best Practices



PTW Version Compatibility

Libraries are often specific to a particular version of PTW. Make sure the library you obtain is compatible with the version of PTW you are running. Using an incompatible library can cause errors or incorrect results. This is a HUGE reason to get libraries directly from SKM.

Relay Firmware Version

In some cases, the library might also be dependent on the firmware version of your SEL relays. Check your relay's firmware and make sure the library supports it.

Never download libraries from untrusted sources. This could expose your computer to malware. Always back up your PTW installation before installing new libraries. This provides a way to revert to a working state if something goes wrong. Document the libraries you install. Keep a record of the library name, version, and source so you can track what you're using and troubleshoot if necessary. Test, Test, Test

After installing a new library, thoroughly test your models to ensure the relays are being represented correctly in PTW.

Example Communication to SKM:

Subject: Request for PTW Device Libraries - SEL 700G and SEL 751Dear SKM Support,I am a licensed user of PTW [Version Number] and require the device libraries for the following SEL relays: SEL 700G SEL 751My PTW license number is [Your PTW License Number]. Please let me know how I can obtain these libraries.Thank you,[Your Name][Your Company][Your Contact Information]By following these steps, you'll ensure you get the correct libraries legally and can trust the accuracy of your PTW models. Good luck! Flag for review