Marine Power Systems
Ensuring the resilience, reliability, and security of shipboard electric power.
SEL provides electric power protection, monitoring, and control solutions that ensure the resilience, reliability, and security of mission-critical marine electric power systems.
Our experienced engineering teams will work closely with you to design, build, and commission electric power systems that are fit for the demanding applications and harsh environmental conditions of marine facilities and naval vessels.
System Design and Analysis
SEL engineers design and implement protection and automated power management solutions that make even the most complex systems manageable and meet the most demanding standards for reliability, resiliency, cybersecurity, and ease of operation.
These systems provide real-time visibility and control, facilitating the coordination of multiple switchboards and generation sources to protect equipment and ensure continuous power to propulsion and other mission-critical systems.
Design and Requirements Analysis
We use advanced modeling and simulation, informed by decades of power engineering experience, to analyze system requirements, validate full system designs, and optimize the performance of the power system through the devices that protect and control it.
Switchboard and Control Systems
SEL products are designed from the ground up for performance, cybersecurity, and ease of use—helping to ensure that switchboard and control systems are secure, reliable, and easy for personnel to operate.
Ethernet security gateways provide a secure network perimeter and remote engineering access to protective relays. Our DoDIN-approved software-defined networking (SDN) switches improve network performance and cybersecurity. And the data processing and native HMI in our hardened Real-Time Automation Controllers (RTACs) provide operators with total system visibility and control.
We harness SEL R&D and testing capabilities to help you achieve your objectives.
SEL Government Services has access to the most comprehensive library of validated system models in the electric power industry.
SEL’s software-defined networking (SDN) solution for operational technology (OT) systems is the only one on the DoDIN APL that offers true deny-by-default cybersecurity.
Protection for Mission-Critical Assets
We customize ultra-reliable SEL commercial products to meet both MIL-STD and project-based requirements. SEL devices—including the protective relays featured below—are currently supporting electric power systems in the U.S. Navy LHA, LHD, DDG, CVN, SBX, and TAGM-25.
Our manufacturing processes comply with the IPC-A-610 Class 3 workmanship standard for products requiring high reliability, such as those used in life-support and aerospace systems. We maintain an on-site testing laboratory certified by the American Association for Laboratory Accreditation (A2LA) to the ISO/IEC 17025 standard.
SEL networking and communications products are designed for the demands of operational technology (OT) systems and meet the same reliability standards as our protective relays.
SEL-3622 Security Gateway
The SEL-3622 enhances cybersecurity by providing a secure network perimeter and secure engineering access to devices in the control system. SEL Government Services customizes this robust commercial product to meet your requirements.
- Secure, authenticated, managed engineering access to devices inside the network perimeter
- Deny-by-default firewall
- Robust security logging
- Anti-tampering alerts for physical intrusion and cable connection changes
SEL-700G Generator Protection Relay
A complete generator protection and synchronization solution with flexible I/O, advanced communication capabilities, and a variety of mounting options.
- Current differential protection
- Breaker wear monitoring
- Overexcitation protection
- Shore-power synchronization
- Metering and reporting functions
- Load shedding
- Stator and rotor protection
SEL-849 Motor Management Relay
Comprehensive motor protection: short-circuit, load loss, load jam, frequent starting, imbalanced current, and phase reversal protection as well as an advanced thermal model.
- Built-in arc-flash detection and mitigation capability.
- Can be configured to protect feeder circuits.
- Metering and monitoring functions for system awareness and rapid diagnostics.
- Can be installed inside a motor control center (MCC) and connected to external HMI.
- Ready for integration into supervisory or coordinated protection and control systems.
Proven Reliability and Lifetime Support
Every solution we provide comes with the most reliable devices in the electric power industry and complete technical support for SEL-manufactured products.
It’s been this way at SEL since the company was founded nearly 40 years ago—a major reason why we’re North America’s most trusted provider of protective relays.
See how we ensure the reliability, availability, and cybersecurity of products and components.
Our factory warranty—the best in the industry—applies to all devices customized by SEL Government Services.
Read our technical paper assessing the long-term reliability of microprocessor-based digital protective relays.