351S#01
Price: $4,145.25 | Savings: $130.00
- Feeder protection
- Wide-area power system event monitoring using IEEE C37.118 synchrophasors
- Horizontal rack mount
SEL-351S
Protection System
The SEL-351S Protection System offers comprehensive feeder and overcurrent protection perfect for industrial and utility feeder applications. Enhance your quality of service with lower costs and innovative features, like Mirrored Bits communications, IEEE C37.118 synchrophasors, expanded operator controls, and SEL Best Choice Ground Directional Element logic.
Starting at
$3,770
Complete Distribution System Protection
Apply a comprehensive mix of overcurrent functions for sensitive protection from phase-to-phase and phase-to-ground faults, and achieve fast operation for three-phase faults.
Reclosing Control
Program the relay four-shot autoreclosing function with synchronism and voltage check logic to mimic a variety of reclosing practices. Sequence coordination logic coordinates with downstream reclosers for a complete protection scheme.
- Integrate and automate substation equipment, even devices from multiple vendors, with IEC 61850 communications protocol.
- Replace older electromechanical relay schemes, control switches, and metering devices in outdoor breaker control enclosures.
- Commission automatic substation restoration schemes using programmable user interface controls and Mirrored Bits communications.
- Use the programmable control logic and integration features with a communications link for control and protection of remote substations.
- Selectively coordinate with downstream SEL-351R Recloser Controls (applied on circuit reclosers) using a Mirrored Bits communications link for secure, high-speed fault clearing on distribution circuits and industrial cogeneration facilities.
- Schedule circuit breaker maintenance based on need, as determined from breaker-monitoring data and alarms.
- Analyze overcurrent protection system performance using built-in Sequential Events Recorder (SER) data.
Fast Substation Restoration
Commission automatic substation restoration schemes using programmable user interface controls and Mirrored Bits communications in conjunction with the SEL-2100 Logic Processor.
Reliable Breaker Control
Open or close the circuit breaker manually with the optional SafeLock trip/close pushbuttons, which provide direct control of the breaker independent of the relay.
SEL-351S Features
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- USB port simplifies local connections and speeds up relay communications.
- Default displays or programmable custom messages notify personnel of power system events or relay status.
- Programmable operator pushbuttons and optional user-configurable labels allow for ease of operation.
- Front-panel LEDs can be programmed to indicate custom alarms.
- Optional SafeLock trip/close pushbuttons and bright indicating LEDs allow breaker control independent of the relay.
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- High-current interrupting output contacts increase contact robustness and reliability.
- Harmonic metering to the 16th harmonic enhances power quality analysis.
- Dual copper Ethernet port allows communication between devices and provides redundancy. Single or dual fiber-optic ports are also available.
- Standard multisession Modbus TCP, Modbus RTU, DNP3, and IEC 61850 provide communications flexibility.
- Mirrored Bits communications provides fast and reliable relay-to-relay communication.
- EIA-485 port provides quick and easy engineering access.
- SafeLock trip/close pushbuttons on the front panel are wired directly to these terminals to allow breaker control independent of the relay.
- Expanded I/O allows for flexible applications.
- Sensitive earth fault (SEF) protection accurately detects ground faults with low current values.
- Built-in phasor measurement unit allows wide-area power system monitoring.