SEL-451-4 Bay Control, Automation, and Protection System

Products for Protection, Monitoring, Control, Automation, and Metering

SEL-451-4

Bay Control, Automation, and Protection System

Quickly integrate bay control for breakers and disconnect switches with full automation and protection in one device.

Now With Arc Sense™ Technology

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.
Communications
Download event reports in seconds, instead of minutes, using the optional Ethernet port with Telnet and FTP. Quickly move information with DNP3 LAN/WAN or IEC 61850 protocols.
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.

SEL accessories simplify operation and enhance the flexibility of SEL products.

Add independent breaker control to any relay. The SEL-9510 Control Switch Module easily installs in panel or rack locations for independent local control and status indications.

Rack- or panel-mount horizontal and vertical hardware packages.
Ethernet connection options for primary and standby connections
- 10/100BASE-T
- 10BASE-FL
- 100BASE-FX
DNP3 Level 2 Slave communications protocol.
One or two additional I/O boards with standard, high-interrupting, or high-speed/high-interrupting outputs.
User-configurable labels for operator controls and target LEDs.
Connectorized^® hardware configuration.
Enhanced HMI with 24 target LEDs and 12 operator pushbuttons.
Independent breaker trip/close pushbuttons with status indication, including 24 additional input and 4 additional output contacts.
High-impedance fault detection using Arc Sense™ technology.

Locally operate and control breakers and disconnect switches using the advanced bay control with one-line diagram display.
Use the built-in fault locator to efficiently dispatch line inspection and repair personnel.
Use SEL-5601 Analytic Assistant Software to display oscillograms and vector diagrams to analyze event reports.
Alarm for low-voltage conditions on one or two station batteries.
Operate power systems with maximum stable loading using real-time voltage and current synchrophasors.

Apply overcurrent protection for primary and backup, and three-pole tripping schemes on subtransmission lines.

Configure settings for up to four shots of automatic breaker reclosing for one or two circuit breakers, with synchronism and voltage checks to optimize system restoration.
Implement breaker failure logic for one or two circuit breakers.
Track average and last circuit breaker operating time. Alarm on slow circuit breaker.
Detect downed conductors and high-impedance faults with patent-pending Arc Sense technology.

SEL provides options to help you efficiently and safely commission and test these relays.
	Streamline commissioning by using the SEL-4391 Data Courier™ to send and retrieve settings, gather event reports, and install enhancements.
	When access to the back of panels and cabinets is allowed, use a Connectorized^® version of this relay for fast installation and testing.
	Improve safety, save time, and reduce costs with SEL-4600 Series Test Blocks and Plugs. Use the SEL recommended standard block and plug configurations for SEL-451 relays.

Budgetary Retail, Quantity 1: $4,410
Fully Optioned Price: $10,170
(Prices displayed are for planning purposes and are subject to change. Contact your SEL sales representative today for a quote on configurations and quantities to meet your needs.)