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ريلاي ABB SPAJ 140C المشترك للتيار الزائد والعطل الأرضي
رقم الموديل: SPAJ140C
Current Inputs: 3 × phase CT (1 A or 5 A) + 1 × neutral CTPhase OC: I> stage (IDMT or DT); I>> stage (instantaneous or DT)Earth Fault: Io> stage (IDMT or DT); Io>> stage (instantaneous)IDMT Curves: IEC SI / VI / EI per IEC 60255-151
متوفر — يُشحن داخل المملكة العربية السعودية
نرد خلال 4 ساعات عمل · الأسعار بالريال السعودي · توصيل لجميع مدن المملكة
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ريلاي ABB SPAJ 140C المشترك للتيار الزائد والعطل الأرضي — نظرة عامة
ريلاي ABB SPAJ 140C هو ريلاي حماية مشترك للتيار الزائد والعطل الأرضي لمغذيات ومحركات ومحولات الجهد المتوسط، يوفر حماية أربعة مستويات مع إعدادات تأخير زمني مستقلة لعناصر التيار الزائد الطوري والعطل الأرضي. تصميمه الأنالوجي القوي المثبت ساهم في نشره على نطاق واسع في شبكة التوزيع السعودية منذ التسعينيات. يظل SPAJ 140C أكثر ريلايات الحماية تركيباً في شبكات التوزيع القديمة 13.8 كيلوفولت و33 كيلوفولت في المملكة. راز الشرق الأوسط يُحافظ على مخزون من SPAJ 140C كمنتجات ABB أصلية للاستبدال المباشر في لوحات المفاتيح القائمة.
المواصفات الفنية
المواصفات الكاملة لـ SPAJ140C
- Current Inputs
- 3 × phase CT (1 A or 5 A) + 1 × neutral CT
- Phase OC
- I> stage (IDMT or DT); I>> stage (instantaneous or DT)
- Earth Fault
- Io> stage (IDMT or DT); Io>> stage (instantaneous)
- IDMT Curves
- IEC SI / VI / EI per IEC 60255-151
- Time Multiplier
- 0.05–1.0 (I>); separate setting (Io>)
- Current Settings
- I>: 0.5–2.5 × In; I>>: 2.5–40 × In; Io>: 0.1–0.8 × In
- Output Relays
- 2 trip relays + 1 alarm relay
- Auxiliary Supply
- 48 V DC / 110 V DC / 220 V DC / 110 V AC
- Mounting
- Flush panel, 4U height
- Flag Indicators
- Mechanical flag per protection element
- Standard
- IEC 60255 / ANSI C37.90
المميزات والفوائد
- Four-step protection configuration (I>, I>>, Io>, Io>>) with independent time and current thresholds adjusted via front-panel calibrated rotary switches without laptop or software, enabling maintenance engineers to re-set and verify protection settings in the field without specialised parameterisation tools.
- IEC IDMT characteristic selection (Standard Inverse, Very Inverse, Extremely Inverse) via front jumper provides grading flexibility for coordination with both upstream MV power fuses (requiring Extremely Inverse characteristic for fuse-relay grading) and downstream low-voltage MCCB protection at industrial switchboards.
- Mechanical flag indicator clearly identifies which protection element (I>, I>>, Io>, Io>>) operated to cause the circuit breaker trip, enabling rapid fault classification and relay reset by field maintenance engineers without SCADA access — reducing fault restoration time at remote substations.
- Robust static analog design with no microprocessor dependency eliminates firmware obsolescence and cybersecurity vulnerability concerns at critical infrastructure substations — a consideration at ARAMCO and SEC sites where ICS cybersecurity assessments under ARAMCO's Cyber Security Policy identify legacy relay vulnerabilities.
- Genuine ABB original spare relay stock at Razz Middle East enables direct like-for-like SPAJ 140C replacement in existing switchgear panels, preserving the panel's wiring interface, CT burden compatibility, and protection settings documentation without panel modification or settings recalculation.
- Secondary injection test capability with complete calibration report for all four protection elements confirms relay accuracy to IEC 60255 limits before installation — providing the test documentation required for SEC and ARAMCO protection panel commissioning acceptance records.
- Compatibility with existing SPAJ 140C installation CT burdens, auxiliary supply voltage, and terminal wiring allows direct replacement of failed relays in existing 13.8 kV and 33 kV switchgear panels without rewiring, saving several hours of panel modification time per relay replacement.
التطبيقات الصناعية
- Direct replacement for failed SPAJ 140C relays in SEC 13.8 kV secondary distribution switchgear across Saudi cities, maintaining protection panel design integrity and preserving existing CT wiring and protection settings — a critical consideration for SEC-managed substations where panel modification requires formal design review approval.
- MV feeder protection in legacy industrial switchgear panels at ARAMCO Ras Tanura and Abqaiq refineries, where SPAJ 140C relays were originally specified in the 1990s and 2000s and replacement with a like-for-like relay avoids triggering a protection coordination re-study for the entire switchboard.
- New industrial switchgear for facilities specifying SPAJ 140C to maintain commonality with their existing installed relay base, reducing spare parts inventory requirements by using a single relay type across all new and existing 13.8 kV distribution panels.
- Transformer incomer protection at distribution substations operated by MARAFIQ and SWCC, where SPAJ 140C relays provide phase overcurrent and earth fault protection on the MV incomer to 11 kV/415 V transformers at industrial estates and desalination plant internal distribution substations.
- Motor feeder protection in legacy HV motor control centres at SABIC petrochemical plants, where SPAJ 140C relays protect the 6.6 kV or 13.8 kV supply feeders to large motor starters above 1 MW and replacement with a like-for-like relay maintains the protection coordination study validity without requiring a new relay grading calculation.
- Feeder protection at NEOM legacy grid connection substations during the construction phase, where SPAJ 140C relays in SEC-supplied temporary substations are specified by SEC as the standard feeder protection relay — requiring genuine ABB supply to comply with the site's SEC electrical approval.
- Spare relay stock programme at Saudi Arabia's large industrial facilities (ARAMCO, SABIC, NWC) where a physical SPAJ 140C relay spare is held on site for each critical MV feeder protection panel, enabling same-day relay replacement without off-site repair lead time following a relay malfunction.
مورد معتمد في المملكة العربية السعودية
احصل على عرض سعر لـ ريلاي ABB SPAJ 140C المشترك للتيار الزائد والعطل الأرضي
نرد خلال 4 ساعات. أرسل رقم الموديل SPAJ140C للحصول على سعر تنافسي مع التسليم في أنحاء المملكة العربية السعودية والخليج.
أسئلة شائعة حول ريلاي ABB SPAJ 140C المشترك للتيار الزائد والعطل الأرضي
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