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Schweitzer Engineering Laboratories SEL-351A Systema Protectionis
Fabricator: Schweitzer Engineering Laboratories
Condicio: Nova Marca
Tempus Ante Initium: In Stoccum
Origo: Civitates Foederatae
Garantia: 12 Menses
Email: [email protected]
whatsApp: +86-18150117685
- Praevisio
- Product Overview
- Key Functions
- Official Specifications
- Frequently Asked Questions
- Compatibility & Ordering Notes
- Hot Selling Models
- Producta recommendata
Praevisio
SEL • SEL-351A
SEL-351A Protection System
The SEL-351A protection system combines directional overcurrent elements, feeder reclosing, fault location, metering, event recording, Ethernet communications, and IEEE C37.118 synchrophasors.
Ad Primum Aspectum
| Marca | Sel |
|---|---|
| Modelus | SEL-351A |
| Product Type | Relais pro protectione alimentatoris |
| Functio principalis | Provides primary or backup directional overcurrent protection and feeder automation |
| Applicatio vel series compatibiles | Utility and industrial distribution feeders |
Identificatio exacta.
Match SEL-351A character by character and confirm the complete Protection System designation.
Arrangementum Interfacis
Confirmare ante connexionem substitutionis supplitum installatum, portus, connexiones campestres et accessoria requisa.
Configuration Check
Servare projectum ingenieriae approbatum, parametres rete et data applicationis quae systema installatum utitur.
Product Overview
The SEL-351A protection system combines directional overcurrent elements, feeder reclosing, fault location, metering, event recording, Ethernet communications, and IEEE C37.118 synchrophasors.
Phase, negative-sequence, residual, and neutral overcurrent elements work with four-shot reclosing and synchronism-check logic. The relay records events, locates faults, meters power and energy, and monitors breaker operating time and wear. Built-in Ethernet, serial ports, and supported automation protocols connect the relay to SCADA, engineering, and synchrophasor systems.
Key Functions
Protectio Alimentatoris et Reclosio
Elementa supercurrentis phaseos, sequentiae negativae, residui et neutralis operantur cum logica reclosionis quattuor-ictus et verificandi synchronismi.
Monitorium Defectuum et Rerum
Rellay notat eventus, locat defectus, metit potentiam et energiam, et monitorat tempus operationis interruptoris et usum.
Communicationes Substationis
Ethernet incorporatus, portus serialis et protocolli automationis suffragati connectunt rellay ad systemata SCADA, ingenieriae et synchrophasorum.
Official Specifications
| Ingressus Currentis Phasicae | IA, IB et IC: 5 A vel 1 A nominalis |
|---|---|
| Ingressus Currentis Neutralis | 5 A, 1 A, 0.2 A vel 0.05 A nominalis |
| Limitis Tensionis Alternatae | maximum 300 V |
| Norma Notae Contactus | 30 A ad coniungendum; 6 A continuo ad 70 °C; interruptio 0.20 ad 0.75 A |
| Nota Contactus Ad Altam Currentiam | 30 A ad coniungendum; 6 A continuo ad 70 °C; interruptio 10 A |
| Frequentia Systematis et Rotatio Phasium | 50 vel 60 Hz; ABC vel ACB |
| Portus Locales et Seriales | 3 × EIA-232, USB Typus B et EIA-485 |
| Ethernet Options | Dual 10/100BASE-T copper or single/dual 100BASE-FX fiber |
| Communication Protocols | SEL, optional IEC 61850, Modbus, DNP3, ASCII, SNTP, IEEE C37.118, FTP, Telnet and optional PRP |
| Synchrophasor Rate | Up to 60 messages/s at 60 Hz or 50 messages/s at 50 Hz |
| AC Sampling | 128 samples per cycle with a 3 kHz low-pass filter |
| Protection Processing | 4 times per power-system cycle |
| Power-Supply Options | 125/250 V DC aut 120/230 V AC; 48/125 V DC aut 120 V AC; 24/48 V DC |
| Temperatura operativa | −40 ad +85 °C |
| Harmonic Metering | Usque ad harmonicum sextumdecimum |
| Automatic Reclosing | Usque ad quattuor conatus cum duobus formatis reclosing selectabilibus |
| Elementa Frequentiae | Sex nivellae frequentiae et quattuor elementa pro velocitate mutationis frequentiae |
Frequently Asked Questions
Num SEL-351A potest protegere distributionem alimentariam ut relais primarium?
Relais praebet protectionem primariam aut secundariam contra currentes excessivas pro distributione alimentaria.
Quales ratings secundarios de transformatoribus currentis SEL-351A accipere potest?
Ingressus phasium 5 A vel 1 A nominales secundarios accipiunt, dum ingressus neutralis etiam optiones 0.2 A et 0.05 A offert.
Quot automaticos reclose shots SEL-351A perficere potest?
Logica reclosing usque ad quattuor shots cum duobus formatis selectabilibus supportat.
Potestne SEL-351A synchrophasor measurements publicare?
Function C37.118 IEEE incorporata usque ad 60 messages per secundum in systemate 60 Hz mittit.
Quod software ad gestionem parametrorum in SEL-351A utitur?
software acSELerator QuickSet SEL-5030 ad creandos et administrandos parametros rellay utitur.
Quomodo SEL-351A aequipes maintenance ad aestimandam conditionem interruptoris iuvat?
Monitoring interruptoris recentes tempora trip et close notat et data trending usque ad 128 operationes retinet.
Can SEL-351A communicate over redundant Ethernet networks?
Optional Parallel Redundancy Protocol sends duplicate messages through two compatible Ethernet ports without packet loss after a single network failure.
Compatibility & Ordering Notes
Index Compatibilitatis
- Select phase and neutral current-input ratings that match the installed instrument transformers.
- Retain the approved protection settings, SELogic equations, communications map and time source.
- Confirm whether IEC 61850, fiber Ethernet, PRP, SafeLock and sensitive-earth-fault options are required.
