American SEL-351 Microcomputer Protection Device Integrated Protection Device
LEHIY item code: LH-SEL-0013
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Confirm the brand, model number, part number, and quantity. Share a clear nameplate photo when the old item has close variants.
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SEL-351 Microprocessor-based Protection System (USA) We offer remote or on-site installation and commissioning services for SEL products. Sourcing directly from the US SEL manufacturer ensures quality, and our consolidated shipping and competitive pricing ensure competitive pricing.
The SEL-351 protection system features built-in Ethernet and IEEE C37.118 synchronization phasors, making it ideal for directional overcurrent applications. Optional Mirrored Bits communication and power quality monitoring add flexibility to the solution. SEL-351 is the global standard for protection in utility and industrial electrical systems.
Key features of the SEL-351 microprocessor-based protection system include: Circuit breaker fault detection – Fast fault detection of circuit breaker using built-in fast-reset circuit breaker fault detection elements and logic.
Pilot protection scheme – Applying pilot protection to transmission, distribution, or substation circuits, including three-terminal circuits lines with conventional pilot communication equipment or optional Mirrored Bits communication.
Grounding power system protection – Applying sensitive directional overcurrent protection to arc suppression coil grounded, ungrounded, and impedance-grounded power systems. Service Restoration—Dispatch line personnel to quickly isolate overhead line problems and restore service faster using the built-in fault locator.
Enhanced Circuit Breaker Monitoring—Schedule circuit breaker maintenance based on needs determined by detailed circuit breaker monitoring data and alarms. Our company offers the SEL-351 microprocessor-based integrated protection device from the USA, sourced directly from the manufacturer, guaranteeing authenticity.
The SEL-351 microprocessor-based protection device provides the following protection: Innovative Directional Element Polarization: Provides directional stability during phase faults through positive sequence voltage polarization memory of the phase directional element.
Best Choice Ground Directional Element: System logic ensures safe operation of the ground directional element for all types of system grounding practices under different system conditions. Frequency Protection: Provides advanced load unloading through six-level frequency elements and four frequency change rate elements, as well as undervoltage/overvoltage protection.
Reclosing Control: Employs four-stage reclosing with sequential coordination, synchronization checks, and voltage checks. Fault Locator: Calculates accurate fault distance measurements using an impedance-based fault locator. Second Harmonic Blocking Detection: Transformer energized with a second harmonic blocking element.
The output of the harmonic detection element blocks the selected tripping element until the surge condition subsides. For details about the SEL-351 product, please contact our sales department.
Plain language sourcing guide for American SEL-351 Microcomputer Protection Device Integrated Protection Device
Start with the full model name. Check the brand name. Check the part number. Check the code on the old unit. These small checks help you avoid a wrong order.
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| Brand Name: | SEL | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
What are your strengths?
Ans. LEHIY specializes in industrial automation and control components, offering fast sourcing, stable quality, and competitive prices for global customers.
What is your estimated delivery time?
Ans. Most items ship within 3-7 days. Customized or rare models may take 10-30 working days.
What are your primary product offerings?
Ans. Our main products include PLCs, sensors, valves, solenoid valves, actuators, power modules, transmitters, and complete industrial automation solutions.
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Ans. You can reach us anytime via Email, WhatsApp, LinkedIn, or our contact page. Our sales engineers respond quickly and provide technical support when needed.
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Ans. Standard terms are 50% TT in advance and 50% balance before delivery. We also support Alibaba Trade Assurance and L/C for qualified orders.
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American SEL-351 Microcomputer Protection Device Integrated Protection Device
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