SEL-400G
Price: $18,982.76
- Basic generator protection
- For hydro, thermal, combined-cycle, and pumped-storage applications
SEL-400G
Advanced Generator Protection System
The SEL-400G offers primary and backup protection for generators of all sizes and types, including hydro, pumped-storage hydro, steam turbine, and combustion gas turbine generators. It combines generator, bus, and step-up transformer protection in one package, making the relay an economical solution for an entire generation unit. Advanced protection functions, like transverse differential protection, provide turn-to-turn fault detection, which allows for earlier fault detection, limits damage to your generator, and helps you return to service faster. Adaptive differential protection and a wide frequency tracking range (5–120 Hz) improve protection security. Dual frequency zones and autosynchronization offer smooth synchronization to the grid. You can quickly integrate the SEL-400G into serial- or Ethernet-based communications. SEL Grid Configurator software allows you to quickly create, manage, and deploy device settings. Or, you can continue to use acSELerator QuickSet SEL-5030 Software for your configuration needs. SEL-400 Series Relay Mimic Diagrams
Starting at
$17,200
Advanced Generator Protection
Two independent universal differential elements provide protection for the generator and GSU transformer in a single relay. With its 18 current inputs, 6 voltage inputs, and wide-range frequency tracking (5–120 Hz), the SEL-400G can be applied in a wide variety of generator configurations. In addition, its advanced antimotoring protection and loss-of-field protection elements further protect your generator.
Pumped Storage Logic
This feature enables pumped storage hydropower protection without the need for external relays to switch CT wiring, which lowers costs and improves reliability.
Stator Ground Fault Protection
Achieve passive and active ground fault detection across 100 percent of the stator winding. The stator winding ground fault protection elements include integrating timers that detect intermittent ground faults and isolate the generator before the fault evolves into a permanent fault.
Rotor/Field Winding Protection
Applying the SEL-2664 Field Ground Module and the SEL-2664S Stator Ground Protection Relay with the SEL-400G allows you to protect your system against rotor/field winding short circuits. With the field ground protection element, the first fault will trigger an alarm and a second fault results in a trip signal. This allows you to continue meeting your generating obligations and to schedule an outage at a preferred time.
Simplified Settings Management
SEL Grid Configurator is a configuration software tool that increases efficiency and improves settings insights. It features a spreadsheet-style editor, powerful protection visualization, comprehensive reporting, custom filters, and multiple-device settings management.
Communication and Integration
Quickly integrate the SEL-400G into serial- or Ethernet-based communications with IEC 61850, the IEC 62439 Parallel Redundancy Protocol (PRP), Mirrored Bits communications, Modbus, DNP3, and other protocols. Use small form-factor pluggable (SFP) transceivers on designated process bus, station bus, and engineering access ports in the five-port Ethernet card. Choose between single- and multimode communications options for increased flexibility.
SEL-400G Features
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- EIA-232 front serial port is quick and convenient for system setup and local access.
- Front-panel display allows operators to control and view the status of disconnects and breakers.
- User-selectable mimic screens show the system configuration in one-line diagram format.
- Easy-to-use keypad aids simple navigation.
- Front-panel, tricolor LEDs indicate custom alarms and provide fast and simple information to assist dispatchers and line crews with rapid power restoration.
- Programmable operator pushbuttons with user-configurable labels allow front-panel customization.
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- Choose from a horizontal panel-mount or rack-mount chassis.
- Select a five-port Ethernet card for dedicated process bus, station bus, and engineering access ports.
- Use three rear EIA-232 ports for Mirrored Bits communications, DNP3, SCADA, and engineering access.
- Power supply options include: 24–48 Vdc; 48–125 Vdc or 110–120 Vac; or 125–250 Vdc or 110–240 Vac.
- The 18 current and 6 voltage channels can be configured for a variety of applications.
- The relay can be ordered with up to an 8U chassis that can accommodate as many as three I/O boards with a wide range of input and output combinations
Applications
Centralized Protection For Generation Systems in Data Centers A single SEL-400G protects both the generator and transformer, allowing you to reduce device count, simplify testing and commissioning, and reduce operating costs. Minimize the risk of downtime by using SELogic control equations to implement automatic transfer control for closed transitioning between utility and local generation sources. Comprehensive protection with advanced logic and extensive I/O allows you to standardize on a single relay for scalable generation solutions in your data center applications.
Pumped-Storage Logic Pumped-storage logic in the SEL-400G enables pumped-storage hydropower protection without the need for external relays to switch CT wiring, which lowers costs and improves reliability. The SEL-400G internally rolls the phasing of selected CTs to correct the phase change introduced in the primary circuit during pump operation, or it corrects the transposition introduced by the reversing switch in a pumped-storage application..