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ريلاي حماية المغذي سيمنز Reyrolle 7SR21 Argus
رقم الموديل: 7SR2102-1JA20-0DA0
نرد خلال 4 ساعات عمل · الأسعار بالريال السعودي · توصيل لجميع مدن المملكة
ريلاي حماية المغذي سيمنز Reyrolle 7SR21 Argus — نظرة عامة
ريلاي Reyrolle 7SR21 Argus من سيمنز هو ريلاي حماية رقمي متقدم للتيار الزائد الاتجاهي والعطل الأرضي لحماية المغذيات والمحركات والمحولات في لوحات التبديل MV. يدعم IEC 61850 Ed 2 مع رسائل GOOSE وإعادة الإغلاق التلقائي.
يُستخدم في لوحات التبديل MV الصناعية في SABIC وأرامكو وفي محطات توزيع SEC في المملكة. توفر راز الشرق الأوسط الدراسات الإعدادية وتقارير الاختبار وتكوين IEC 61850.
المواصفات الفنية
المواصفات الكاملة لـ 7SR2102-1JA20-0DA0
- Protection
- OC (3-phase), directional EF, IDMT, AR, UV/OV, UF/OF
- Earth Fault
- Directional (3V0 or 3I0 polarising)
- Auto-Reclose
- 3-shot with adjustable dead/reclaim time
- Communication
- IEC 61850 Ed 2, GOOSE, Modbus, DNP3
- Mounting
- 4U flush panel
- Auxiliary
- 24–250 V DC
- Event Log
- 500 events
- Standard
- IEC 60255
المميزات والفوائد
- Directional earth fault element using 3V0 or 3I0 polarisation enables selective earth fault protection on impedance-earthed and petersen-coil-earthed MV networks where non-directional relays fail to discriminate feeder faults.
- IEC 61850 Edition 2 GOOSE messaging allows the 7SR21 to participate in digital substation bay-bus protection schemes alongside SIPROTEC 5 IEDs, supporting Saudi Arabia's digital substation upgrade programme.
- IDMT overcurrent curves (normal inverse, very inverse, extremely inverse, long-time inverse) provide the grading flexibility required for co-ordinating with downstream fuses and upstream overcurrent protection in complex Saudi distribution networks.
- 3-shot auto-reclose with adjustable dead-time and reclaim-time per shot covers the SEC standard auto-reclose cycle for overhead 11 kV and 33 kV distribution lines, restoring supply after transient faults without operator intervention.
- Negative sequence overcurrent detection identifies motor phase-reversal and unbalanced supply conditions that cause motor overheating, providing early protection before the motor thermal overload operates.
- 500-event log with millisecond timestamps provides fault sequence-of-events data for post-fault analysis and root cause investigation at Saudi industrial MV switchgear and distribution substations.
- Established Reyrolle brand familiarity with Middle East protection engineers and utilities reduces protection scheme design and commissioning time at Saudi projects where Reyrolle relay procedures are already embedded in operating procedures.
التطبيقات الصناعية
- MV feeder directional protection in ring-main distribution at SABIC Jubail petrochemical sites, where directional earth fault discrimination on the 33 kV ring identifies the faulted cable section without tripping the entire ring.
- Industrial transformer HV incomer protection at 11 kV and 33 kV transformers feeding large Saudi industrial MCCs, where the 7SR21 provides overcurrent, earth fault, and thermal replica protection for the transformer.
- SEC distribution substation feeder relay replacement in digital substation upgrade projects, where IEC 61850 Ed 2 GOOSE communication allows existing 7SR21 installations to interface with new SIPROTEC 5 bay controllers.
- Overhead distribution line protection at SEC 11 kV rural feeders, where 3-shot auto-reclose restores supply after transient faults caused by wildlife or wind-blown vegetation contact with overhead lines.
- Motor protection relay for large MV motors at water utility pump stations, where the 7SR21's negative sequence and thermal replica elements provide comprehensive motor protection beyond the overload relay function.
- Ring main unit (RMU) protection relay for commercial building 11 kV RMU installations at hospitals and large commercial buildings in Saudi cities, where the 7SR21's compact 4U flush form fits the standard RMU relay panel.
- Aramco 13.8 kV industrial switchgear feeder protection at upstream gas facilities, where the 7SR21's IDMT curves and directional earth fault provide the protection co-ordination required for multi-source MV distribution configurations.
مورد معتمد في المملكة العربية السعودية
احصل على عرض سعر لـ ريلاي حماية المغذي سيمنز Reyrolle 7SR21 Argus
نرد خلال 4 ساعات. أرسل رقم الموديل 7SR2102-1JA20-0DA0 للحصول على سعر تنافسي مع التسليم في أنحاء المملكة العربية السعودية والخليج.
أسئلة شائعة حول ريلاي حماية المغذي سيمنز Reyrolle 7SR21 Argus
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