Overview
The Siemens 7SJ5311-4EA02-1AA0/FF is a high-performance numerical protection relay from the SIPROTEC 7SJ531 series, engineered to safeguard motors and power lines in industrial power networks. It offers fast fault detection, advanced monitoring, and flexible communication, ensuring operational safety and system stability in demanding environments.
This relay supports multiple protection functions, including overcurrent, short-circuit, and earth fault protection. Moreover, it integrates seamlessly with SCADA systems using IEC 870-5-103 and IEC 61850 protocols, enabling real-time data exchange and remote control. Its modular hardware and software design allow for easy expansion and customization, while the built-in graphic display provides intuitive local operation and diagnostics.
In addition, the relay is configured using Siemens’ DIGSI software, which simplifies parameter setting, event analysis, and firmware updates. Its rugged construction and CE/RoHS certifications make it suitable for long-term deployment in harsh industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 7SJ5311-4EA02-1AA0/FF |
| Dimensions | 26.00 cm × 33.00 cm × 9.50 cm |
| Weight | 1.43kg |
Typical Applications / System Integration
The Siemens 7SJ5311-4EA02-1AA0/FF relay is widely used in industrial and utility power systems requiring precise protection and monitoring:
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Motor Protection: Prevents damage from overloads, short circuits, and phase failures.
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Power Line Protection: Detects faults and isolates affected segments to maintain grid stability.
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Substation Automation: Integrates with SCADA systems for remote monitoring and control.
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Industrial Facilities: Protects critical equipment in manufacturing, mining, and oil & gas sectors.
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Renewable Energy Systems: Ensures safe operation of wind and solar power distribution networks.
Its support for IEC 61850 makes it ideal for modern digital substations and smart grid applications.
FAQ
Q: What systems is this relay compatible with?
A: It integrates with SCADA platforms using IEC 870-5-103 and IEC 61850 protocols.
Q: What protection functions does it offer?
A: Overcurrent, short-circuit, earth fault, and motor protection.
Q: How is it configured?
A: Using Siemens DIGSI software for parameter setting and diagnostics.
Q: Is it suitable for substation automation?
A: Yes, it supports real-time monitoring and remote control via standard protocols.
Q: What industries commonly use this relay?
A: Power distribution, manufacturing, oil & gas, mining, and renewable energy.
| Brze ponude | Primite cijenu i dostupnost BRZO od našeg posvećenog tima za korisničku podršku. |
|---|---|
| Dostava | Dostupna je ubrzana, teretna i međunarodna dostava. |
| Stanje | 100% Novo s originalnom ambalažom |
| Plaćanje | Prihvaćamo American Express, Discover, MasterCard, PayPal i Visa. Naša stranica je osigurana RapidSSL-om. |
| Luka za otpremu | ShangHai, Xiamen |
| Jamstvo | 12 mjeseci |
| Q: Jesu li naše cijene konkurentne? |
| A: Da, surađujemo s više od 50 zemalja širom svijeta. Kao vodeći dobavljač u Kini, nudimo značajne popuste temeljem tržišnih trendova. |
| Q: Koje je jamstveno razdoblje? |
| A: Svi naši novi i originalni proizvodi dolaze sa standardnim jamstvom od jedne godine. |
| Q: Koje metode plaćanja prihvaćamo? |
| A: Zahtijevamo 100% T/T (telegrafski transfer) uplatu prije otpreme. Za artikle s rokom isporuke, potrebno je unaprijed uplatiti 30% depozita, a preostalih 70% prije otpreme. Ako imate predstavnika u Kini, možete preko njega dogovoriti prijenos RMB. |
| Q: Koje metode dostave koristimo? |
| A: Uglavnom koristimo FedEx, DHL, UPS i BRE za dostavu. Ako imate račun kod bilo kojeg od ovih prijevoznika, možete sami obaviti otpremu. Također nudimo besplatnu dostavu za špeditere sa sjedištem u Kini. |
| Q: Koje je naše vrijeme isporuke? |
| A: Dostava obično traje 1-3 dana nakon primitka početne uplate. Za artikle s rokom isporuke, otprema će se izvršiti prema navedenom rasporedu. |
| Q: Kako pakiramo robu? |
| A: Osiguravamo sigurno pakiranje s višestrukim slojevima zaštite. Proizvodi se prvo stavljaju u njihove originalne kutije i zatvaraju naljepnicama. Zatim se dodaje sloj mjehurićaste folije za zaštitu od udaraca tijekom transporta. Na kraju, predmeti se sigurno pakuju u čvrste kutije. |
| Q: Kako nas kupci mogu kontaktirati i zatražiti ponudu? |
| A: Možete nas kontaktirati putem e-pošte, WhatsAppa, WeChata, Skypea ili vaše omiljene komunikacijske platforme. Obratite nam se sa svojim potrebama, a mi ćemo vam pružiti brzu, prilagođenu ponudu. |
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