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وحدة تبديل المكثفات ABB بالثايريستور
رقم الموديل: PFC-T60-400
نرد خلال 4 ساعات عمل · الأسعار بالريال السعودي · توصيل لجميع مدن المملكة
وحدة تبديل المكثفات ABB بالثايريستور — نظرة عامة
وحدات تبديل الثايريستور ABB لألواح تصحيح معامل القدرة التلقائي تستخدم تقنية التبديل عند عبور الصفر لتوصيل وفصل بنوك المكثفات لحظة التساوي الدقيق في الجهد، مما يلغي فعلياً موجات الحمل الانتقالية المدمرة التي تحدث مع تبديل الكونتاكتور التقليدي. يُطيل التبديل بالثايريستور عمر المكثف بمقدار ثلاثة إلى خمسة أضعاف مقارنة بالبنوك ذات التبديل بالكونتاكتور. في المملكة العربية السعودية، تفرض شركة الكهرباء السعودية غرامات مالية على العملاء الصناعيين الذين تنخفض معامل قدرتهم عن 0.85 متأخر، مما يجعل أنظمة تصحيح معامل القدرة التلقائي المبدَّلة بالثايريستور ضرورة اقتصادية للمنشآت ذات الأحمال سريعة التغير. راز الشرق الأوسط يوفر وحدات تبديل الثايريستور ABB وخدمات التكامل الكاملة.
المواصفات الفنية
المواصفات الكاملة لـ PFC-T60-400
- Rated Current
- 25 A / 40 A / 60 A / 100 A per phase
- Voltage Rating
- 400 V AC / 690 V AC
- Switching Method
- Zero-crossing thyristor (SCR)
- Reactive Power per Step
- 5–100 kVAR (application dependent)
- Switching Time
- <20 ms from command to connection
- Cooling
- Natural convection (25–60 A); forced air (100 A)
- Heat Sink
- Integral aluminium heat sink
- Compatibility
- ABB RVC 6/12 power factor controller
- Mounting
- Panel mounting with DIN rail accessories
- Protection
- Thyristor over-temperature protection
- Standard
- IEC 60947-4-2 / IEC 60831
المميزات والفوائد
- Zero-crossing switching technology eliminates capacitor bank inrush transients, extending capacitor service life by three to five times compared to conventional contactor switching — reducing annual maintenance costs for capacitor replacement on large APFC panels at industrial facilities.
- Fast 20 ms switching response time enables tracking of rapidly varying reactive loads at arc furnaces, large DOL motor starts, and resistance welding machines, maintaining power factor above the SEC 0.85 penalty threshold even during step-load transients.
- Available in 400 V and 690 V versions to match both standard LV distribution and MV-connected high-voltage drives, covering reactive compensation requirements at all voltage levels within a single industrial facility from a single supplier.
- Direct compatibility with ABB RVC 6 and RVC 12 automatic power factor controllers, which provide closed-loop reactive power regulation with configurable step sizes, deadband, and switching delay to prevent oscillation in APFC panels at large industrial facilities.
- Integral over-temperature protection with thyristor junction temperature monitoring disables the module if heat sink temperature exceeds safe limits, protecting against thyristor failure in poorly ventilated panels during Saudi Arabia's 50°C summer ambient conditions.
- Panel-mounting design with DIN rail accessories allows thyristor modules to be retrofitted into existing contactor-switched APFC cubicles as a direct upgrade, replacing contactors without changing the cubicle structure or RVC controller wiring.
- Three-phase symmetrical switching ensures balanced reactive power injection into the supply bus, avoiding the phase voltage imbalance that can occur with single-phase contactor switching in multi-step APFC panels at facilities with 11 kV transformers having unbalanced loads.
التطبيقات الصناعية
- APFC panel reactive compensation at SABIC petrochemical plants in Jubail Industrial City, where large variable-frequency drives on compressors and pumps create fast-changing reactive loads that contactor-switched capacitor banks cannot track, causing repeated SEC penalty charges.
- Power factor correction at steel re-rolling mills and aluminium smelters in MODON industrial estates, where arc furnaces and resistance heating loads require sub-second capacitor switching response to maintain PF above the SEC 0.85 billing threshold.
- Reactive compensation upgrade for existing contactor-switched APFC panels at SEC-connected commercial buildings and shopping malls in Riyadh and Jeddah, where building expansion has increased reactive load beyond the tracking capability of the original contactor-switched system.
- Capacitor switching at water pump motor control centres for SWCC and NWC desalination plants, where regular pump motor DOL starts create reactive demand spikes that thyristor switching absorbs faster than mechanical contactors, reducing reactive energy billing.
- MV-connected 690 V APFC panels at large industrial facilities with 11 kV/690 V transformers, where the higher operating voltage and larger capacitor step sizes make zero-crossing switching essential to prevent transformer and cable insulation stress from switching transients.
- Retrofit upgrade for aging contactor-switched APFC panels at Saudi Aramco production facilities, where capacitor replacement frequency and maintenance cost justify replacement of contactors with thyristor modules on the return-on-investment basis required for ARAMCO Project Expense Authorisations.
- Harmonic filter capacitor switching at facilities with significant harmonic distortion from VFDs and UPS systems, where thyristor switching prevents resonance between the harmonic filter capacitors and the supply impedance during switching transients.
مورد معتمد في المملكة العربية السعودية
احصل على عرض سعر لـ وحدة تبديل المكثفات ABB بالثايريستور
نرد خلال 4 ساعات. أرسل رقم الموديل PFC-T60-400 للحصول على سعر تنافسي مع التسليم في أنحاء المملكة العربية السعودية والخليج.
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