U.6.43
Date Code 20020501
User’s Guide
SEL-421/SEL-421-1 Relay
Testing and Troubleshooting
Factory Assistance
Factory Assistance
The employee-owners of Schweitzer Engineering Laboratories are dedicated
to making electric power safer, more reliable, and more economical.
We appreciate your interest in SEL products and services. If you have any
questions or comments, please contact us at:
Schweitzer Engineering Laboratories, Inc.
2350 NE Hopkins Court
Pullman, WA USA 99163-5603
Tel: (509) 332-1890
Fax: (509) 332-7990
Internet: www.selinc.com
You can also contact your local Technical Service Center. Telephone us at
(509) 332-1890 or visit the SEL web page http://www.selinc.com/techsvc.htm
to locate your Technical Service Center.
We guarantee prompt, courteous, and professional service. We appreciate
receiving any comments and suggestions about new products or product
improvements that would help us make your job easier.
Summary of Contents for SEL-421
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