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ريلاي الحماية الإلكترونية للمحرك ABB سلسلة EF
رقم الموديل: EF210-1
Current Range: 0.1 A–820 A (multiple overlapping ranges)Thermal Model: Full thermal model with heat balance accumulationTrip Class: Class 5, 10, 10A, 20, 30 (IEC 60947-4-1)Phase Asymmetry Trip: Default 10%, adjustable
متوفر — يُشحن داخل المملكة العربية السعودية
نرد خلال 4 ساعات عمل · الأسعار بالريال السعودي · توصيل لجميع مدن المملكة
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ريلاي الحماية الإلكترونية للمحرك ABB سلسلة EF — نظرة عامة
ريلايات الحماية الإلكترونية للمحرك من ABB تحل محل ريلايات الحمل الزائد ذات المعدن ثنائي الطبقات التقليدية بأجهزة حماية تعتمد على المعالجات الدقيقة لمراقبة الحالة الحرارية الحقيقية للمحرك وجودة الطور وحرارة الملف. يستخدم النموذج الحراري الكامل للريلاي الإلكتروني الطاقة الحرارية المتراكمة بناءً على التيار ودورة الواجب ودرجة الحرارة المحيطة، مما يوفر عتبات رحلة وإنذار تعكس الحالة الحرارية الفعلية للمحرك. راز الشرق الأوسط يوفر ريلايات الحماية الإلكترونية للمحرك عبر جميع نطاقات التيار مع حسابات إعداد الريلاي بناءً على صحائف بيانات المحرك.
المواصفات الفنية
المواصفات الكاملة لـ EF210-1
- Current Range
- 0.1 A–820 A (multiple overlapping ranges)
- Thermal Model
- Full thermal model with heat balance accumulation
- Trip Class
- Class 5, 10, 10A, 20, 30 (IEC 60947-4-1)
- Phase Asymmetry Trip
- Default 10%, adjustable
- Phase Loss
- Detected via asymmetry monitoring
- PTC Thermistor
- 1 or 2 PTC/Pt100 inputs
- Locked Rotor
- Detects >5× In for >400 ms (adjustable)
- Undercurrent
- Adjustable undercurrent alarm/trip
- Ground Fault
- Optional (residual current method)
- Communication
- RS-485 Modbus RTU (option)
- Mounting
- DIN rail, direct contactor mounting, panel flush
- Display
- LED fault indication with fault code
- Standard
- IEC 60947-4-1 / IEC 60255
المميزات والفوائد
- Full thermal model protection accumulates heat energy from motor current, duty cycle history, and ambient temperature to predict actual motor winding temperature — providing motor protection accuracy that bimetallic relays cannot achieve, particularly during repeated starts that accumulate residual heat between start attempts.
- Phase asymmetry detection with adjustable threshold (default 10%) identifies supply voltage or current asymmetry caused by unbalanced 13.8 kV or 33 kV distribution loads or blown fuses on the supply transformer LV side — a motor thermal risk in Saudi Arabia's distribution networks where single-phase load imbalance is common.
- PTC thermistor input accepts direct connection of motor-embedded PTC or Pt100 winding temperature sensors, providing winding temperature monitoring independent of the current-based thermal model — enabling accurate protection for motors with non-standard cooling (TEFC, water-cooled) or in high-ambient Saudi desert installation environments.
- Selectable trip class 5 to 30 provides the same protection device for applications from hermetically sealed compressors (Class 5 for fast trip on overload) to high-inertia conveyor and mill motors (Class 30 for slow trip allowing extended acceleration without nuisance tripping) — a single product covering all motor applications.
- RS-485 Modbus RTU communication option provides remote DCS integration for motor current monitoring, thermal state (percentage of thermal capacity used), alarm and trip status — enabling plant control room operators to monitor motor health across the facility without visiting individual MCCs.
- Undercurrent alarm and trip function monitors pump motor current for a drop indicating pump cavitation or loss of suction — an important protection function at NWC and SWCC pump installations where running a pump dry without supply causes rapid impeller and mechanical seal damage before an operator response is possible.
- Automatic restart function after thermal cooldown enables the relay to automatically reset and restart the motor after a thermal overload trip once the motor has cooled to the pre-set restart threshold — reducing operator intervention requirements at unmanned pump stations and reducing the frequency of unnecessary site visits for manual relay reset.
التطبيقات الصناعية
- Motor protection relay upgrade for DOL starters at NWC water supply pump stations, replacing aging bimetallic overload relays with electronic protection that accurately models motor thermal state during the repeated pump starts and stops that occur at automatic pressure-control pump stations.
- MCC motor protection relay for process pump and compressor motors at SABIC Jubail petrochemical plants, where SABIC SESG electrical design standard requires electronic protection relays with communication capability on all motors above 5.5 kW in process-critical motor control centres.
- Thermal overload and phase asymmetry protection for critical fan motors at SWCC desalination plant induced draught and forced draught systems, where phase asymmetry from unbalanced facility loads is a common motor heating risk and electronic protection detects and trips before winding damage occurs.
- Ground fault protection option for motors in earthed neutral systems at ARAMCO facilities under SAES-P-100, where residual current-based ground fault detection in the motor protection relay provides backup protection to the motor branch circuit MCCB for high-impedance ground faults.
- Undercurrent protection for brine booster pump motors at MARAFIQ industrial cooling systems, where reduced motor current indicates loss of pump prime or cavitation — providing early warning and automatic stop to prevent costly pump and mechanical seal damage at remotely monitored cooling water systems.
- PTC thermistor monitoring for high-ambient motors at outdoor HVAC installations in Saudi Arabia's 50°C summer environment, where standard bimetallic overload relays do not account for reduced motor thermal headroom in high ambient temperatures and electronic protection with motor-embedded PTC input provides accurate thermal margin monitoring.
- Electronic motor protection relay supply for MCC builders at MODON industrial estates, where Razz Middle East provides current-range selection, relay setting calculations, and Modbus communication configuration documentation for all ABB protection relays used in new MCC panels supplied to industrial facility clients.
مورد معتمد في المملكة العربية السعودية
احصل على عرض سعر لـ ريلاي الحماية الإلكترونية للمحرك ABB سلسلة EF
نرد خلال 4 ساعات. أرسل رقم الموديل EF210-1 للحصول على سعر تنافسي مع التسليم في أنحاء المملكة العربية السعودية والخليج.
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