Schneider Samwha EOCR 3CT-H2-200-C Three-Phase Integrated Current Transformer

سمحة EOCR from Korea, integrated into the شنايدر EOCR product line, made in Korea, exclusively for EOCR motor protection relays.

تعريف النموذج

3ط م: Three-phase integrated current transformer with three through-hole cores

H2: رمز الحجم, corresponding to the cable window for 200A model

200: Primary rated current: 200 أ

ج: Old version suffix; Z is the new replacement model (3CT-H2-200-Z). Electrical parameters are identical, only version revision, direct plug-and-play replacement.

المواصفات الكهربائية الأساسية

Transformation ratio: 200/5 أ

فئة الدقة: فصل 3.0

Rated burden: 1.25 فرجينيا (Version C) / 5 فرجينيا (New Version Z)

تكرار: 50/60 هرتز

تحمل الجهد: 1150 V

Short-time thermal stability: 40إيث / 1 ثانية

مقاومة العزل: ≥10 MΩ @ 500 في العاصمة

Applicable circuit: تكييف 600 V motor circuit

وزن: تقريبا. 580 ز

الأبعاد الشاملة

W150 mm × H55 mm × D71 mm

Integral epoxy encapsulation, three circular cable holes; السكك الحديدية الدين / panel mounting

Secondary terminals: س1, ك2 (three independent windings for each phase); secondary wire: 1.5~4 mm² flexible cable

طلب & مطابقة

✅ Designed exclusively for: EOCR-3DE, FDE, SSD, 3MZ and other digital motor protection relays. It samples three-phase current to implement overload, خسارة المرحلة, locked rotor and current unbalance protection.

✅ Application scenarios: Three-phase asynchronous motor control cabinets, المشجعين, مضخات المياه, compressors and conveyor power circuits.

❌ Not suitable for energy metering (فصل 3 accuracy for protection only, not for measurement).

اختيار النموذج & استبدال

New in-stock replacement: 3CT-H2-200-Z, direct replacement for 3CT-H2-200-C

Other models in the same series:

3CT-H1-100-Z: 100/5 أ

3CT-HH-150-Z: 150/5 أ

3CT-H3-300-Z: 300/5 أ

3CT-H4-400-Z: 400/5 أ

إرشادات التثبيت
Run the main power cable directly through the three holes; P1 = supply side, P2 = motor side. Polarity reversal will cause phase error and false phase-loss tripping. CT secondary circuit must never be open-circuited.
Use only identical 3CT models with one relay; do not mix CTs with different transformation ratios.
درجة الحرارة المحيطة: -20 ~ +60 درجه مئوية; أقصى ارتفاع: 2000 م.
Wiring Instruction for 3CT-H2-200-C (نموذج جديد: 3CT-H2-200-Z)

Three-phase integrated CT with independent secondary windings for R/S/T phases, secondary output 5 أ. Only compatible with EOCR motor protectors; cannot be connected to ordinary ammeters or metering devices.

تعريف المحطة

Primary side: Three holes for L1(ر), L2(س), L3(ت) كابلات الطاقة

Polarity rule: P1 (مزود الطاقة) → P2 (حمل المحرك); arrow points toward the load. Reversed polarity leads to phase fault and incorrect phase-loss alarm.

Secondary terminals (3 groups from top to bottom):

R phase: س1, ك2

S phase: س1, ك2

T phase: س1, ك2

Secondary cable: 1.5~4 mm² flexible wire; shielded twisted pair is recommended; cable length ≤ 15 م.

الأسلاك القياسية (EOCR-3DE / FDE / 3MZ / iFMZ / i3MZ)

R-phase K1 → EOCR I1; R-phase K2 → common COM terminal
S-phase K1 → EOCR I2; S-phase K2 → common COM terminal
T-phase K1 → EOCR I3; T-phase K2 → common COM terminal

✅ All three K2 terminals are tied together to the protector’s current COM; single-point grounding at the COM terminal is recommended.

❌ Never allow secondary open circuit (will cause accuracy drift and insulation breakdown).

Note on mechanical life: على المدى “mechanical life” only applies to devices with moving contacts and mechanical structures (المقاولين, قواطع الدائرة, المرحلات). المحولات الحالية (ط م) and voltage transformers (حزب العمال) are static components without moving parts. Their service indicators are insulation life, thermal stability and environmental durability only.

صيانة & دورة الاستبدال (On-site O&M Reference)

Normal environment (معجب & مضخة, clean indoor cabinet): Evaluate replacement after 8~12 years

بيئة قاسية (ارتفاع درجة الحرارة, تراب, VFD circuits, frequent direct-on-line motor starting): Check insulation and transformation ratio every 5~7 years

After short-circuit heavy current impact: Test or replace immediately. The iron core will suffer hidden performance degradation, resulting in current sampling deviation and false tripping of the protector.

ملاحظة تكميلية

New model 3CT-H2-200-Z shares the same mechanical structure, iron core and encapsulation as version C, with identical durability. Only the rated burden is upgraded from 1.25 VA to 5 فرجينيا, making it more stable for long secondary cables and VFD applications. Mounting holes are fully interchangeable with no cabinet modification required.

Naming Rule for 3CT-H Series Three-Phase Integrated CT

شكل: 3CT-XX-XXX-Suffix

3ط م: Three-phase combined current transformer (EOCR dedicated)

H1/HH/H2/H3/H4: رمز الحجم (cable window dimension)

Numeral: Primary current (secondary output 5 أ)

لاحقة: C = Old version (توقف); Z = New version (active replacement)

دقة: فصل 3.0; Secondary output: 5 أ; Compatible with all EOCR motor protectors.

قائمة النماذج الكاملة (Old C-version + New Z-version, one-to-one match)

Full Specifications (ascending current rating)

3CT-HS-75, نسبة: 75/5 أ

Old: 3CT-HS-75-C (توقف)

جديد: 3CT-HS-75-Z (في الإنتاج)

3CT-H1-100, نسبة: 100/5 أ

Old: 3سي تي-H1-100-C (توقف)

جديد: 3CT-H1-100-Z (في الإنتاج)

3CT-HH-150, نسبة: 150/5 أ

Old: 3CT-HH-150-C (توقف)

جديد: 3CT-HH-150-Z (في الإنتاج)

3CT-H2-200 (النموذج الخاص بك), نسبة: 200/5 أ

Old: 3CT-H2-200-C (توقف)

جديد: 3CT-H2-200-Z (direct interchange)

3CT-H3-300, نسبة: 300/5 أ

Old: 3CT-H3-300-C (توقف)

جديد: 3CT-H3-300-Z (في الإنتاج)

3CT-H4-400, نسبة: 400/5 أ

Old: 3CT-H4-400-C (توقف)

جديد: 3CT-H4-400-Z (في الإنتاج)

Key Differences between C-version & Z-version

Old suffix -C: Rated burden 1.25 فرجينيا, limited short secondary wiring length

New suffix -Z: Rated burden upgraded to 5 فرجينيا, better stability for long cables and VFD circuits; mounting footprint fully compatible for drop-in replacement without cabinet changes.