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SEL-751 & SEL-411L Protection Relays | Original SEL New

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SEL-751 & SEL-411L Protection Relays | Original SEL New

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Brand Name : SEL

Model Number : SEL-751、SEL-411L

Certification : IEEE / IEC 、CE & UL、ISO

Place of Origin : USA

MOQ : 1

Price : $450 - $5,500

Payment Terms : L/C,D/A,D/P,T/T,Western Union

Delivery Time : 3-5Workdays

Packaging Details : original package

Reliability Grade : Utility Grade / Mission Critical

Protocol Support : SEL Mirrored Bits / IEC 61850

Logic Engine : SELogic Equations

Mounting Type : Panel Mount / Rack Mount

Shipping Term : International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line

Freight Charge : For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

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SEL-751 & SEL-411L Protection Relays | Original SEL New
The SEL-751 and SEL-411L represent the pinnacle of power system protection. We supply original SEL numerical relays designed to safeguard feeders and transmission lines against faults. With SEL's legendary reputation for reliability and our commitment to providing 100% genuine, brand-new hardware, we ensure your utility or industrial power system remains secure under the most demanding conditions.
Product Highlights
  • Hardened Cybersecurity: Integrated secure communication protocols to protect critical infrastructure from cyber threats.
  • High-Speed Protection: Sub-cycle line differential and distance protection with the SEL-411L series.
  • Versatile Logic: Advanced SELogic allows for complex automation and interlocking without external PLCs.
Technical Specifications
Feature SEL-751 (Feeder) SEL-411L (Differential)
Primary Focus Feeder Protection & Arc Flash Line Differential & Distance
Communication Ethernet, Modbus, DNP3 Dual Ethernet, Mirrored Bits
Arc Flash Support Yes (Fiber Optic) No
Protection Speed Standard High-Speed Sub-cycle Line Protection
Software Support AcSELerator QuickSet AcSELerator QuickSet
Application Fields
  • Utility Substations: Main and backup protection for transmission and distribution.
  • Renewable Energy: Secure integration of wind and solar farms.
  • Heavy Industry: Protection for large mining, chemical, and metal processing plants.
  • Microgrids: Advanced logic for islanding and synchronization.
Frequently Asked Questions
Q: Does the SEL-751 include arc flash sensors?
A: The relay supports arc flash detection, but fiber-optic sensors are typically ordered as separate accessories.
Q: Can I use the SEL-411L for long-distance transmission lines?
A: Yes, it is specifically designed for high-speed line differential and distance protection over fiber or serial links.
Q: Is the AcSELerator QuickSet software included?
A: We provide the necessary technical documentation; the software is usually available through SEL's official portal.
Q: How do you verify the 10-year warranty?
A: SEL products are famous for their 10-year warranty. We provide original units with valid serial numbers for registration.
Q: Are these units made in the USA?
A: Yes, SEL products are primarily engineered and manufactured in the USA.
Q: What is the configuration for a standard SEL-751-5-1-1-A?
A: This configuration typically includes standard I/O, 125/250 Vdc power, and standard communication ports.

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