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 | Brzo primite cenu i dostupnost od našeg posvećenog tima za korisničku podršku. |
|---|---|
| Isporuka | Dostupna je ubrzana, teretna i međunarodna dostava. |
| Stanje | 100% novo sa originalnim pakovanjem |
| Plaćanje | Prihvatamo American Express, Discover, MasterCard, PayPal i Visa. Naš sajt je zaštićen RapidSSL-om. |
| Luka za isporuku | Šangaj, Sjamenu |
| Garancija | 12 meseci |
| Q: Da li su naše cene konkurentne? |
| A: Da, sarađujemo sa preko 50 zemalja širom sveta. Kao vodeći dobavljač u Kini, nudimo značajne popuste u skladu sa tržišnim trendovima. |
| Q: Koji je garantni rok? |
| A: Svi naši novi i originalni proizvodi dolaze sa standardnom garancijom od jedne godine. |
| Q: Koje metode plaćanja prihvatamo? |
| A: Zahtevamo 100% T/T (telegrafski transfer) uplatu pre slanja. Za artikle sa rokom isporuke, potrebno je unapred uplatiti 30% depozita, a preostalih 70% pre slanja. Ako imate predstavnika u Kini, možete preko njega organizovati RMB transfer. |
| Q: Koje metode isporuke koristimo? |
| A: Pretežno koristimo FedEx, DHL, UPS i BRE za isporuku. Ako imate nalog kod nekog od ovih prevoznika, možete direktno organizovati slanje. Takođe nudimo besplatnu dostavu do špeditera sa sedištem u Kini. |
| Q: Koje je naše vreme isporuke? |
| A: Isporuka obično traje 1-3 dana nakon prijema početne uplate. Za artikle sa rokom isporuke, slanje će se obaviti prema navedenom rasporedu. |
| Q: Kako pakujemo robu? |
| A: Obavezujemo se na bezbedno pakovanje sa višeslojnom zaštitom. Proizvodi se prvo stavljaju u originalne kutije i zapečate etiketama. Zatim se dodaje sloj mehurićaste folije za zaštitu od udara tokom transporta. Na kraju, predmeti se sigurno pakuju u čvrste kutije. |
| Q: Kako kupci mogu da nas kontaktiraju i zatraže ponudu? |
| A: Možete nas kontaktirati putem e-pošte, WhatsApp-a, WeChat-a, Skype-a ili vaše omiljene komunikacione platforme. Obratite nam se sa vašim potrebama, i pružićemo vam brzu, prilagođenu ponudu. |
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