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Product

Introducing the SEL-TWFL

Deploy the SEL-TWFL Dual Traveling-Wave Fault Locator and 12-Channel MHz Recorder alongside existing protective devices to locate faults and monitor up to two transmission lines. This economical fault locator uses the same technology as our SEL-T400L and SEL-T401L relays—proven to be accurate to within a single tower span.
Product

Introducing the SEL-787L Line Current Differential Relay

Economical and dependable line current differential protection with arc-flash protection, fault locating, high-impedance fault detection, and more—an effective choice for overhead and underground lines, cables, feeders, and distributed generation tie-ins.
Thought Leadership

Cybersecurity Center

See the latest from the Cybersecurity Center, where SEL experts ask questions, analyze challenges, and share ideas about ICS and OT cybersecurity.

Product

SEL-2731 Provides Networking Flexibility

Gigabit-capable ports, a rugged design, and support for SEL and third-party SFPs all make our newest managed Ethernet switch, the SEL-2731, a flexible option for any utility or industrial networking need.
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