• Apply SEL serial encrypting transceivers to protect SCADA, engineering access, and other serial data links
• Use SEL-2032 Communications Processors—the first to meet DOE password guidelines; SEL products have no back-door communications access
• Learn More
  - SEL-3021 Serial Encrypting Transceiver
  - Technical Papers
  - Data Access Security Training Course
  

• Ranked #1 in all categories, including technology, security from hackers, features, price, and technical service support*
• Worldwide, ten-year product warranty
• Worldwide support with products in over 100 countries

* Worldwide Study of the Protective Relay Marketplace in Electric Utilities: 2004–2006, Volume 1, by Newton-Evans Research Company, Inc.

Protect serial data links with
SEL-3021 Serial Encrypting Transceivers.

SEL provides complete solutions for protection, monitoring, control, automation, and metering of electric power systems and equipment.

Technical Papers

Methods For Securing Substation LAN Communications

Electronic Security of Real-Time Protection and SCADA Communications

Secure SCADA and Engineering Access Communications: A Case Study of Private and Public Communication Link Security

Press Releases

SEL Protects Electrical Grid Against Attack - 1/05

New SEL-3021 Serial Encrypting Transceivers Secure Vital Communications - 1/05

CBT 104 Data Access Security Course
This course teaches students how to implement security features within SEL technology that can assist in maintaining integrity, authorization, and confidentiality of data by preventing unauthorized or accidental communications to and from a substation LAN. Methods to secure all types of communications are presented, including real-time, near real-time, serial, event collection, and more. Learn more about CBT 104 Data Access Security ...