SEL-751 & SEL-411L Protection Relays | Original SEL New
Price:
$450 - $5,500
MOQ:
1
Delivery Time:
3-5Workdays
Brand:
SEL
Product Description
SEL-751 & SEL-411L Protection Relays | Original SEL New
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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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shanghai Fradwell Industrial Automation Co., Ltd.
Location
No. 168, Chengnan Road, Pudong New Area, 201399 Shanghai, China
Contact Person
Angelo Wu