Accelerate System Configuration
Rapidly commission your bay control with preconfigured bay arrangements. Choose among different bus configurations, including single- and dual-busbar, transfer bus, tie- breaker, breaker-and-a-half, ring-bus, and double-bus/double-breaker configurations. Download the One-Line Graphical Display Database for the latest bay configurations. Control up to two breakers and five disconnect switches while providing status for up to three breakers and five disconnect switches.
Enhance Operator Efficiency
Quickly access and respond to critical system information. Reduce errors by automatically scrolling between one-line bay diagrams, custom metering displays, and alarms.
Integrate Many Substation Devices Into One Powerful System Using the SEL-451-4
Control cooling fans, motor-operated switches, or other equipment using the processing and I/O of the SEL-451-4. Hardware options let you expand I/O to 55 inputs and 24 outputs.
Advanced Visualization Tools
The SEL-451-4 offers a configurable human-machine interface (HMI) to allow for easy integration into your application or operating standards. HMI screens include custom metering and status, critical information alarms, dynamic one-line bay diagram, and sequential events recorder (SER) report.
Flexible Communications
- An Ethernet card option provides two copper or fiber ports for failover redundancy.
- Available Ethernet communications protocols include FTP, Telnet DNP3, LAN/WAN, IEC 61850, and IEEE C37.118 synchrophasors.
- All four independent EIA-232 serial ports support enhanced SEL Mirrored Bits® Communications, SEL Fast Message, SEL ASCII, Compressed ASCII, SEL Fast Operate, SEL Fast Meter, SEL Fast SER, and DNP3 Level 2 Slave.
High-Accuracy Timestamping
Time-tag binary COMTRADE event reports with real-time accuracy of better than 10 µs. View system-state information at time of faults or with timed triggers across the entire system. Use system-state information to validate system models and improve transfer limits and system stability.
Digital Fault Recording (DFR)
Combine relaying reliability with true DFR functionality. The SEL-451-4 Bay Control's high-speed sampling (8 kHz) and COMTRADE output provide advanced oscillography. Use the acSELerator® QuickSet SEL-5030 Software graphical user interface for harmonic analysis and easy event viewing.
Improve Operation With IEEE Synchrophasor Data
Give operators critical system information via serial or Ethernet communications with the SEL-451-4 built in PMCU (Phasor Measurement and Control Unit). Install the SEL-451-4 for required substation needing bay control, automation, and protection, and get a built-in phasor measurement unit at each substation.
Expanded SELogic® Control Equations
Use math and logic combinations of analog and digital values for customized applications. Adapt system control based on prefault conditions. Scale analog values and latch momentary inputs for SCADA retrieval.
acSELerator QuickSet Software
Help speed bay control applications by developing settings offline, programming SELogic control equations, and analyzing postfault event reports.