المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
XJ3-D is a multi-functional three-phase power protection device widely used in AC 380V power systems. إنه يوفر حماية أربعة أضعاف للمحركات والدوائر غير المتزامنة ثلاثية الطور ضد فشل الطور, عكس المرحلة, الجهد الزائد, وانخفاض الجهد, منع تلف المعدات وحوادث السلامة الناجمة عن إمدادات الطاقة غير الطبيعية.
- الوظائف الأساسية & سمات
| وظيفة الحماية | Technical Description | آلية التشغيل |
| Phase Failure Protection | Detects loss of any phase in three-phase power | Upon detection, the relay’s normally closed contact opens, cutting power to the contactor coil |
| Phase Sequence Protection | Identifies phase sequence (normal/reverse) of three-phase power | Once phase sequence is registered, load startup is inhibited if sequence changes; phase failure/reversal LED illuminates |
| حماية الجهد الزائد | Protection voltage adjustable from 380V to 460V | Operating time adjustable 1.5s–4s; control circuit opens on overvoltage |
| حماية الجهد المنخفض | Protection voltage adjustable from 300V to 380V | Operating time adjustable 2s–9s; control circuit opens on undervoltage |
ميزات المنتج:
Multi-mode fault indication (three LEDs for phase reversal/failure, الجهد الزائد, انخفاض الجهد)
Reliable performance, wide application range, easy to use
حجم صغير, convenient DIN-rail mounting
| يتوافق مع GB/T 14048.5
- المعلمات التقنية
| غرض | مواصفة | ملاحظات |
| Rated control supply voltage | تيار متردد 380 فولت, 50/60هرتز | Direct three-phase power supply |
| Overvoltage protection range | 380V–460V (قابل للتعديل) | Factory default approx. 420V |
| Undervoltage protection range | 300V–380V (قابل للتعديل) | Factory default approx. 340V |
| Overvoltage operating time | 1.5s–4s (قابل للتعديل) | Time delay to avoid misoperation |
| Undervoltage operating time | 2s–9s (قابل للتعديل) | Time delay to avoid misoperation |
| Phase failure operating time | ≤2s | استجابة سريعة |
| Phase sequence operating time | ≤1s | استجابة سريعة |
| تصنيف الاتصال | ايه سي-15: 220الخامس/5 أ, 380V/3A | Control circuit load capacity |
| أبعاد | تقريبا. 45×75×105mm | Standard DIN-rail size |
| تصاعد | تركيب السكك الحديدية DIN | يتوافق مع EN 50022 |
- Operating Principle
The XJ3-D achieves comprehensive protection via internal voltage detection, phase detection, and time-delay circuits:
- Voltage detection: Monitors three-phase voltage amplitude in real time and compares with set over/undervoltage thresholds
- Phase detection: Analyzes phase relationship to judge correct sequence and phase loss
- Logic judgment: Triggers time delay (أكثر من / انخفاض الجهد) or direct protection (phase failure/reversal) when abnormality is detected
- Protection action: Internal relay operates; normally closed contact opens, cutting power to downstream contactor coil and de-energizing the main circuit
LED Status Indication:
Normal operation: All three LEDs off (faint glow of phase reversal/failure LED under slight unbalance is normal)
Phase failure / reversal: Phase reversal/failure LED on
الجهد الزائد: Overvoltage LED on
انخفاض الجهد: Undervoltage LED on
- الأسلاك & تثبيت
4.1 Standard Terminal Definition
| رقم المحطة. | وظيفة | Wiring Description |
| 1, 2, 3 | مدخلات الطاقة على ثلاث مراحل | Connect to L1, L2, L3 (380V); any sequence allowed, auto-learn on first power-on |
| 5, 6 | Normally open (لا) اتصال | Open under normal protection, closed on fault |
| 7, 8 | Normally closed (نورث كارولاينا) اتصال | Closed under normal protection, open on fault (commonly used for contactor coil control) |
| 9 | محطة مشتركة | Used with terminals 5 و 7 |
4.3 ملاحظات التثبيت
Must be installed by qualified personnel in strict accordance with wiring diagrams
| تثبيت في الجافة, ventilated areas free of corrosive gas; ambient temperature -5℃ ~ +40℃
If load fails to start after correct wiring, swap any two phases to re-learn phase sequence
Regularly check terminal tightness to prevent poor contact
- Brands & اختيار
العلامات التجارية الرئيسية: لذيذ, شينت, People Electric, Taihua Electric, إلخ.
إرشادات الاختيار:
- Confirm control voltage is three-phase AC 380V
- Select appropriate contact rating based on load type
- Choose XJ3-D (multi-function) if over/undervoltage protection is required
- Choose simplified models such as XJ3-G1 if only phase failure and phase sequence protection are needed
- استكشاف الأخطاء وإصلاحها
| أعراض الخطأ | الأسباب المحتملة | استكشاف الأخطاء وإصلاحها |
| Phase reversal/failure LED always on | 1. Incorrect phase sequence | 1. Swap any two power lines |
| 2. One phase missing | 2. Check three-phase supply | |
| 3. الأسلاك فضفاضة | 3. تشديد المحطات | |
| Overvoltage LED always on | 1. Excessively high supply voltage | 1. Measure line voltage |
| 2. Overvoltage threshold set too low | 2. Adjust overvoltage potentiometer | |
| Undervoltage LED always on | 1. Low supply voltage | 1. Measure line voltage |
| 2. Undervoltage threshold set too high | 2. Adjust undervoltage potentiometer | |
| Cannot reset after protection | 1. Power abnormality not resolved | 1. Restore power then repower |
| 2. Internal protector fault | 2. Replace the unit |
As a mature multi-function three-phase power protection device, the XJ3-D effectively prevents motor burnout caused by phase failure, reversal, الجهد الزائد, وانخفاض الجهد. It is widely used in control circuits for pumps, المشجعين, الضواغط, أدوات الآلة, and other three-phase equipment, making it an indispensable component in industrial automation systems.
مقارنة النماذج & Price Guide for Phase Sequence Protectors (Various Brands)
Below is a comparison of mainstream domestic and imported phase sequence protectors, focusing on models equivalent to the XJ3-D (four-fold protection: فشل المرحلة, sequence, الجهد الزائد, انخفاض الجهد), with market price ranges and key differences for easy selection and procurement.
- Domestic Brands -Model Comparison & Prices (April 2026)
1.1 Core Function Comparison
| ماركة | Multi‑function Type (Phase failure + Sequence + الجهد الزائد + انخفاض الجهد) | النوع الأساسي (Phase failure + Sequence) | ملحوظات |
| شينت | XJ3-D AC380V | XJ3-G AC380V | XJ3-5 with base |
| لذيذ | XJ3-D AC380V (XJ3D380) | XJ3-G AC380V (XJ3G380) | Fully compatible with CHINT, نفس حجم التركيب |
| PEOPLE | XJ3-D AC380V | XJ3-G AC380V | Slightly lower price |
| Taihua | XJ3-D AC380V | XJ3-G AC380V | Cost-effective for bulk purchase |
| Naidian | NDX-D AC380V | NDX-G AC380V | Fully XJ3-series compatible |
1.2 قائمة الأسعار (يوان صيني)
| ماركة | نموذج | Official Store Price | Wholesale Price | Retail Price (تاوباو) | سمات |
| شينت | XJ3-D | 72.27–108.82 | 30–40 | 38–50 | مستقر, high market share |
| شينت | XJ3-G | 40–50 | 25–35 | 28–38 | الحماية الأساسية, اقتصادية |
| لذيذ | XJ3-D | 79.8 | 32–42 | 40–55 | Adjustable over/undervoltage |
| لذيذ | XJ3-G | 40.4 | 22–30 | 25–35 | High cost-performance |
| PEOPLE | XJ3-D | 65–80 | 28–38 | 35–45 | سعر معتدل, reliable |
| PEOPLE | XJ3-G | 35–45 | 22–30 | 25–32 | Basic function, affordable |
- Imported Brands -Model Comparison & Prices
2.1 Equivalent Models to XJ3-D
| ماركة | Multi‑function Type | النوع الأساسي | نطاق السعر (يوان صيني) |
| شنايدر | RM22TG20 (with over/undervoltage) | RM22TG20 (أساسي) | 216–350 |
| ايه بي بي | CM-PVS.41S (مراقبة الجهد) | CM-PFE / CM-PFS.S | 335–799 |
| كارلو جافازي | DPA51CM44 (multi-function) | DPA51CM44 (أساسي) | 180–300 |
| سيمنز | 3UG4512-1AW30 | 3UG4511-1AW30 | 280–450 |
2.2 Key Features of Imported Models
شنايدر RM22TG20: 208-480بطالة, global voltage, 2CO contacts, response ≤1s
ABB CM-PVS.41S: Phase imbalance protection, adjustable delay, for precision equipment
كارلو جافازي DPA51CM44: السكك الحديدية الدين, LED indication, adjustable thresholds, best value among imports
Siemens 3UG4512: High integration, PLC communication, for high-level automation
- مرجع الاختيار & ملحوظات
3.1 Application Guide
| طلب | Recommended Type | سبب |
| General three-phase motors (مضخات, المشجعين) | XJ3-G / XJ3-D | Sufficient basic protection, اقتصادية |
| Precision equipment (CNC, الضواغط) | XJ3-D / imported multi‑function | Over/undervoltage protection prevents damage |
| Non‑reversible equipment (مصاعد, الرافعات) | Must include phase sequence protection | Prevents reverse rotation hazards |
| Unstable grid areas | XJ3-D / imported multi‑function | Protects against voltage fluctuations |
3.2 Price Factors
- وظيفة: Multi-function models (XJ3-D) cost ~30-50% more than basic types (XJ3-G)
- ماركة: Imported units are 3-5× more expensive than domestic
- قناة: Official > retail > wholesale
- كمية: 10%-20% discount for bulk orders (≥10 pcs)
3.3 ملاحظات التوافق
All XJ3 series use DIN-rail mounting (في 50022), أبعاد متطابقة
Same terminal layout: 1/2/3 = three-phase input; 7/8 = NC contact
Direct interchangeable among domestic XJ3 models; verify size/wiring for imports
- ملخص & اقتراحات المشتريات
| ميزانية | النموذج الموصى به | طلب |
| قليل (≤50 CNY) | شينت / لذيذ / PEOPLE XJ3-G | General motor protection |
| واسطة (50–100 CNY) | شينت / Delixi XJ3-D | Most industrial applications |
| عالي (≥200 CNY) | شنايدر RM22TG20 / ABB CM-PVS.41S | Precision equipment & critical lines |
Phase Sequence Protector Model List
Below is a list of mainstream models functionally equivalent to the XJ3-D (فشل المرحلة + sequence + الجهد الزائد + انخفاض الجهد), categorized by brand with key parameters and April 2026 price ranges for quick selection.
- Domestic Mainstream Models (تيار متردد 380 فولت)
1.1 Multi-function Type
| ماركة | نموذج | المعلمات الرئيسية | سعر (يوان صيني) | ملحوظات |
| شينت | XJ3-D AC380V | Overvoltage 380–460V, undervoltage 300–380V, contact 5A/220V | 38–108 | Official: 72.27–108.82 |
| شينت | XJ3-D-40 AC380V | With base, same as XJ3-D | 45–120 | Easy replacement |
| لذيذ | XJ3-D AC380V | Overvoltage delay 1.5–4s, undervoltage 2–9s, قاد | 40–79.8 | Official: 79.80 |
| PEOPLE | XJ3-D AC380V | Phase failure ≤2s, sequence ≤1s, السكك الحديدية الدين | 35–80 | سعر منخفض |
| Taihua | XJ3-D AC380V | XJ3 compatible, adjustable thresholds | 32–65 | Bulk-friendly |
| Naidian | NDX-D AC380V | Same function as XJ3-D | 30–60 | البديل المحلي |
| شينت | NJB1-X | Sequence + فشل + imbalance, 380-480 فولت | 45–90 | For unstable voltage |
1.2 النوع الأساسي
| ماركة | نموذج | المعلمات الرئيسية | سعر (يوان صيني) | ملحوظات |
| شينت | XJ3-G AC380V | Phase failure/sequence, 3A/380V | 28–50 | Official: 40–50 |
| لذيذ | XJ3-G AC380V | Failure ≤2s, sequence ≤1s | 25–40.4 | Official: 40.40 |
| PEOPLE | XJ3-G AC380V | السكك الحديدية الدين, قاد | 25–45 | اقتصادية |
| لذيذ | XJ3-2 AC380V | Simplified sequence + فشل | 22–35 | Basic circuits |
| لذيذ | XJ3-5 AC380V | Failure + sequence + imbalance (7–10%) | 30–50 | With imbalance protection |
- Imported Models (Equivalent to XJ3-D)
2.1 Multi-function Type
| ماركة | نموذج | المعلمات الرئيسية | سعر (يوان صيني) | سمات |
| شنايدر | RM22TG20 | 208–480VAC, 2شركة, ≤1s | 216–350 | 22.5عرض ملم |
| شنايدر | RM4TG20 | Same as RM22TG20 | 180–280 | Localized version |
| ايه بي بي | CM-PVS.41S | 208–440V, imbalance, adjustable delay | 335–799 | دقة عالية |
| كارلو جافازي | DPA51CM44 | 380V, قابل للتعديل, قاد | 180–300 | استجابة سريعة |
| سيمنز | 3UG4512-1AW30 | 380V, أكثر من / انخفاض الجهد + فشل + sequence, بلك | 280–450 | High integration |
| شنايدر | RM22TR33 | Three-phase monitoring + أكثر من / انخفاض الجهد + imbalance | 240–380 | الحماية الكاملة |
2.2 النوع الأساسي
| ماركة | نموذج | المعلمات الرئيسية | سعر (يوان صيني) | سمات |
| شنايدر | RM22TR20 | 208–440V, فشل + sequence | 180–280 | وحدات |
| ايه بي بي | CM-PFE.S | 208–440V, 1شركة, ≤1s | 280–550 | مدمج |
| ايه بي بي | CM-PFS.S | 208–440V, 2شركة, fault memory | 320–600 | Critical loads |
| سيمنز | 3UG4511-1AW30 | 380V, فشل + sequence, قاد | 220–350 | Industrial grade |
| كارلو جافازي | DPA51CM44 (أساسي) | 380V, فشل + sequence | 150–250 | Simplified |
- Special Application Models
| ماركة | نموذج | سمات | طلب | سعر (يوان صيني) |
| شينت | XJ12 | Elevator‑specific, فشل + sequence + imbalance | Elevator control | 50–100 |
| لذيذ | ZYD1 | Pump‑specific, فشل + sequence + التيار الزائد | Pump circuits | 45–90 |
| شنايدر | RM22TU23 | Three-phase monitoring + انخفاض الجهد | Unstable grids | 200–320 |
| ايه بي بي | CM-MPS.41S | Motor protection + تسلسل المرحلة | Integrated motor protection | 400-800 |
- Quick Selection Reference
4.1 Naming Rules (Domestic XJ3 Series)
XJ3: Basic phase failure & sequence relay
د: متعددة الوظائف (فشل + sequence + الجهد الزائد + انخفاض الجهد)
ز: النوع الأساسي (فشل + sequence)
2/5: وظائف خاصة (2 = basic; 5 = with imbalance)
تيار متردد 380 فولت: الجهد المقنن
4.2 تصاعد & التوافق
All XJ3: DIN-rail mount (في 50022), dimensions ~45×75×105mm
Identical terminal definition: 1/2/3 = power; 7/8 = NC
Domestic XJ3 models directly interchangeable
4.3 Price Factors
| عامل | Price Difference |
| وظيفة | Multi‑function +30–50% |
| ماركة | Imported = 3–5× domestic |
| قناة | Official > retail > wholesale |
- Procurement Advice
- صناعة عامة: Domestic XJ3-D (CHINT/Delixi), 50-80 يوان صيني
- Precision/critical lines: مستورد (شنايدر RM22TG20 / ايه بي بي), 200-400 يوان صيني
- الحماية الأساسية: XJ3-G, 25-40 يوان صيني
