المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
Full Specification of Schneider 3CT-H1-100-C المحول الحالي (مخصص لـ EOCR)
- تفسير رمز النموذج
| مقطع الكود | معنى | وصف |
| 3ط م | سلسلة المنتجات | Three-phase combined current transformer, customized for Schneider EOCR motor protector, manufactured by SAMWHA Korea |
| H1 | رمز المواصفات | Primary current rating 100A, circular aperture, applicable for cable outer diameter ≤25mm |
| 100 | تصنيف التيار الأساسي | 100أ (numerator of transformation ratio) |
| ج | Mounting/Terminal Type | Terminal block type; Z stands for direct lead wire type |
Quick Identification: 3CT-H1-100-C = Three-phase 100/5A circular-aperture current transformer with terminal block, exclusive for EOCR
- المعلمات التقنية الأساسية
| فئة المعلمة | مواصفة | Remark |
| Transformation Ratio | 100أ/5أ | Standard secondary current 5A, compatible with full EOCR series |
| فئة الدقة | فصل 1 | Measuring tolerance ±1%, meets protection and metering requirements |
| Rated Burden | 10فرجينيا | Max permissible secondary loop impedance 200mΩ |
| نطاق التردد | 50/60هرتز | General industrial frequency |
| تصنيف الجهد العزل | تيار متردد 600 فولت | Maximum continuous operating voltage |
| تحمل الجهد | 2كيلو فولت (50هرتز, 1دقيقة) | Insulation test standard between windings and earth |
| مقاومة العزل | ≥100MΩ (DC 500V) | Measured by megohmmeter |
| Aperture Size | Circular φ25mm | Standard bore of H1 series |
| البعد الشامل | W150×H71×D55mm | هيكل مدمج, space-saving installation |
| نوع التركيب | Panel mounting | متوافق مع سكة DIN القياسية مقاس 35 مم |
| مادة | Flame-retardant engineering plastic | Compliant with UL94 V0 standard |
| وزن | تقريبا. 0.58كجم | Single unit weight |
| شهادة | م, أول | Conforms to international safety standards |
| رقم الطلب | 3CT-H1-100-C | Exclusive official Schneider order code |
- Full Model List (EOCR 3CT Series)
| نموذج | Ratio | Aperture Shape | Bore Size | التصنيف الحالي | نوع التركيب |
| 3CT-HS-75-C/Z | 75/5أ | Circular | φ22mm | 75أ | C=Terminal block, Z=Lead wire |
| 3CT-H1-100-C/Z | 100/5أ | Circular | φ25mm | 100أ | C=Terminal block, Z=Lead wire |
| 3CT-HH-150-C/Z | 150/5أ | Square | 30×30mm | 150أ | C=Terminal block, Z=Lead wire |
| 3CT-H2-200-C/Z | 200/5أ | Square | 35×35mm | 200أ | C=Terminal block, Z=Lead wire |
| 3CT-H3-300-C/Z | 300/5أ | Square | 45×45mm | 300أ | C=Terminal block, Z=Lead wire |
| 3CT-H4-400-C/Z | 400/5أ | Square | 55×55mm | 400أ | C=Terminal block, Z=Lead wire |
- Cross-brand Alternative Comparison
| ماركة | نموذج | Ratio | دقة | Burden | Aperture | التوافق |
| شنايدر (SAMWHA) | 3CT-H1-100-C | 100/5أ | فصل 1 | 10فرجينيا | φ25mm | Perfect match for EOCR |
| سيمنز | 5SD7410-7 | 100/5أ | فصل 1 | 10فرجينيا | φ25mm | نوع عالمي, adaptation test required |
| ايه بي بي | CT-AR/100 | 100/5أ | فصل 1 | 15فرجينيا | φ25mm | Higher burden capacity, EOCR compatible |
| شينت | البوسنة والهرسك-0.66/100 | 100/5أ | فصل 1 | 10فرجينيا | φ25mm | Cost-effective domestic alternative |
| لذيذ | LMZ1-0.66/100 | 100/5أ | فصل 1 | 10فرجينيا | φ25mm | الاستبدال المحلي, minor dimension difference |
ملاحظات الاستبدال
- Ensure secondary burden capacity ≥10VA for non-Schneider products to guarantee protection precision
- Aperture shall match cable outer diameter; H1 series fits cables below 25mm
- Calibrate transformation ratio and phase for alternative models
- استكشاف الأخطاء وإصلاحها & صيانة
| ظاهرة الخلل | الأسباب المحتملة | Inspection Steps | الحلول |
| No secondary output | الأسلاك الخاطئة, winding open circuit, loose terminals | Check S1/S2 polarity; test secondary resistance; fasten terminals | Correct wiring polarity; replace faulty CT; reinforce terminals |
| Large measuring deviation | Overloaded circuit, mismatched ratio, core saturation | Calculate loop impedance; verify ratio; check overload current | Reduce circuit burden; replace matched model; upgrade CT specification |
| EOCR false tripping | Phase shift, harmonic interference, CT saturation | Test three-phase phase difference; check frequency converter interference; monitor surge current | Recalibrate phase; install harmonic filter; adopt high-saturation CT |
| Insulation failure | Dampness, insulation aging, mechanical damage | Measure insulation resistance; inspect shell cracks; test winding insulation | Dry or replace unit; renew CT; repair damaged parts |
Safety Rules
- Never test open secondary circuit; short-circuit S1/S2 beforehand to avoid high voltage hazard
- Check load and wiring preferentially when deviation exceeds ±2%
- Replace CT immediately if insulation resistance below 10MΩ
- طلب & Cases
السيناريوهات القابلة للتطبيق
EOCR motor protection system: التيار الزائد, undercurrent and phase loss protection
توزيع الطاقة ذات الجهد المنخفض: Current monitoring and protection for circuits below AC 600V
Motor control center: Compact layout saves cabinet space
Industrial production lines: Heavy-duty equipment protection in steel, cement and automobile industry
UPS feeder in data center: Precise current monitoring
Inadmissible Scenarios
Long-term operating current over 120A causing core saturation
High frequency (>400هرتز) or DC circuits with poor measuring accuracy
Outdoor installation without waterproof enclosure
Secondary circuit burden exceeding 10VA
الحالات النموذجية
قضية 1: Motor Protection in Automobile Workshop
3 sets of 55kW three-phase asynchronous motors equipped with EOCR-3E protector. Model 3CT-H1-100-C is selected. It realizes overcurrent trip and rapid phase loss protection, cutting down failure rate by 40%.
قضية 2: Crane Control Cabinet Renovation
Replace old split CT with combined 3CT-H1-100-C, توفير 50% مساحة التثبيت, simplifying wiring and improving operational reliability.
- اختيار & إرشادات التثبيت
Three-step Selection Method
- Calculate current: Multiply rated motor current by 1.1 overload factor
- Select aperture: Choose circular or square bore according to cable size
- Confirm terminal type: Terminal block for cabinet wiring, lead wire for field wiring
احتياطات التثبيت
Keep correct S1(أنا+) and S2(أنا-) connection to prevent false operation
Strictly prohibit open secondary circuit during installation and maintenance
Total secondary loop impedance shall not exceed 200mΩ
Insulation resistance shall be no less than 100MΩ before commissioning
Maintenance Schedule
| غرض | دورة | معيار |
| Visual inspection | شهريا | No crack, looseness or overheating mark |
| Terminal tightening | ربع سنوية | Torque range 2-3N·m |
| اختبار العزل | Yearly | Resistance ≥100MΩ |
| Ratio calibration | Biennially | Tolerance ≤±1% |
Schneider 3CT-H1-100-C is a dedicated three-phase 100/5A combined current transformer for EOCR motor protectors. Featuring Class 1 دقة, 10VA rated burden and compact design, it is widely applied in low-voltage motor protection and power monitoring. Match current, aperture and terminal type properly, and comply with polarity and open-circuit prohibition rules to ensure stable system operation.
