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Schneider EOCRPFZ-H1DZ7W is a high-performance flush-mounted intelligent motor protector integrating multiple protection functions. It features wide current range and universal voltage supply, compatible with various industrial motors. Equipped with millisecond-level response, fault recording function and 4-20mA analog output, it serves as an ideal solution for motor protection in industrial automation systems. Proper parameter configuration effectively extends motor service life, reduces equipment failure rate and boosts production efficiency.
- Définition du code modèle
| Segment | Code | Description |
| Série de produits | EOCRPFZ | Electronic Over Current Relay, Panel Flush Mount Type |
| Type de montage | H | Combined type, matched with 3 transformateurs de courant |
| Note actuelle | 1 | Direct measurement: 0.5~60A |
| 5-turn mode: 0.1~2.0A | ||
| External CT: 1~3600A | ||
| Function Configuration | D | Protection de base + 1-channel 4-20mA analog output |
| Tension nominale | Z7 | Wide voltage supply: 85~250VAC/DC, 50/60Hz |
| Additional Function | W | Standard version with fault record, LED display and reset function |
- Paramètres techniques de base
| Catégorie | Spécification | Remark |
| Fonctions de protection | Surintensité, undercurrent, perte de phase, rotor bloqué, rotation inverse, current unbalance, décrochage, mise à la terre, fuite, court-circuit, pre-alarm | Selectable definite time, inverse time and overheating inverse time characteristics |
| Plage actuelle | Direct: 0.5~60A | Wide coverage for diverse motors |
| 5-turn: 0.1~2.0A | ||
| External CT: 1~3600A | ||
| Alimentation | 85~250VAC/DC, 50/60Hz | Strong tolerance to voltage fluctuation |
| Signal de sortie | 1-channel 4-20mA current loop | For PLC and upper computer monitoring |
| Contacter l'évaluation | 1-SPST, AC250V/3A resistive load | Standard control contact |
| Mode d'affichage | Écran LCD, automatic 5-second cyclic display of three-phase current and leakage current | Manual display switching available |
| Fault Record | Records latest 3 fault causes and current values, data retained after power off | Convenient fault analysis |
| Temps de réponse | 20MS | Fast motor protection |
| Installation | 35mm DIN rail or panel flush mounting | Cutout: 44-55-66mm, Outline: 55-66-77mm |
| Working Ambient | Température: -35~85℃, Humidité: ≤95% non-condensing | Suitable for harsh industrial conditions |
| Performances d'isolation | Résistance d'isolation: ≥10MΩ@DC500V | Sûr et fiable |
| Withstand voltage: 2kV/50Hz for 1min between circuit and shell | ||
| Numéro de commande | EOCRPFZ-H1DZ7W | Official Schneider part number |
- Liste complète des modèles (EOCR-PFZ Series)
| Modèle | Note actuelle | Fonction | Alimentation | Extra Feature |
| EOCRPFZ-H1DZ7W | 0.5~60A | Basique + 1×4-20mA | 85~250VAC/DC | Standard |
| EOCRPFZ-H2DZ7W | 0.5~60A | Basique + 2×4-20mA | 85~250VAC/DC | Standard |
| EOCRPFZ-WRDZ7W | 0.5~60A | Basique + 1×4-20mA | 85~250VAC/DC | Standard |
| EOCRPFZ-WRDUH | 0.5~60A | Basique + Communication | 85~250VAC/DC | Standard |
| EOCRPFZ-C-WRDBWQ | 0.5~60A | Basique + 1×4-20mA | 24VCA/CC | Wide range |
| EOCRPFZ-C-WRDBT | 0.5~60A | Basique + 1×4-20mA | 24VCA/CC | Wide range |
| EOCRPFZ-H3DBW | 0.5~60A | Basique + 3-channel output | 85~250VAC/DC | Standard |
| EOCRPFZ-WRDZ7WQ | 0.5~60A | Basique + 1×4-20mA | 85~250VAC/DC | Amélioré |
- Cross-brand Replacement Comparison
| Schneider EOCRPFZ-H1DZ7W | ABB | Siemens | Omron | Feature Comparison |
| Intelligent motor protector | M101-P | 3RW55 | K8DS | Schneider: 3 enregistrements de défauts, 20ms fast response |
| 0.5~60A | 0.1~63A | 0.1~63A | 0.1~63A | ABB: Superior communication performance |
| 1×4-20mA | 1×4-20mA | 1×4-20mA | 1×4-20mA | Siemens: High PLC compatibility |
| Wide voltage | 24~240VAC/DC | 24~240VAC/DC | 24~240VAC/DC | Omron: Rentable |
- Défauts courants & Dépannage
| Phénomène de défaut | Code | Root Cause | Solution |
| Protector fails to start | – | Power cut-off, abnormal voltage | 1. Vérifier le câblage |
| 2. Measure supply voltage | |||
| 3. Verify DC polarity | |||
| Faux déclenchement | OC/E1 Overcurrent | Improper CT selection, wrong mounting, load fluctuation | 1. Match CT ratio with motor |
| 2. Keep CT away from inverter | |||
| 3. Adjust protection delay | |||
| Phase loss trip | PH/E2 | Missing phase, câblage lâche, CT failure | 1. Check three-phase voltage |
| 2. Fasten terminals | |||
| 3. Test CT output | |||
| Leakage trip | LE/E3 | Poor line insulation, motor winding grounding | 1. Test motor insulation resistance |
| 2. Inspect cable condition | |||
| 3. Reset leakage threshold | |||
| Échec de communication | – | Wrong wiring, mismatched baud rate | 1. Check RS485 A/B connection |
| 2. Set 9600bps, 8N1 | |||
| 3. Confirm 120惟 terminal resistor |
- Air Transport Compliance & Certifications
6.1 Certifications
CE: Compliant with EU LVD and EMC directives
UL: Meets US safety standards
ASC: Conforms to Canadian safety specifications
RoHS: Conception écologique sans plomb
6.2 Air Shipment Rules
Battery status: No built-in lithium battery or supercapacitor, classified as non-dangerous goods
Conditionnement: Standard industrial package against vibration damage
Documents: CE certificate, manual and packing list required
Notice: Avoid contact with sharp objects to prevent shell and insulation damage
- Application Cases
Cas 1: Fan Motor Protection in Steel Plant
Application: 380V 55kW frequent-start fan motor with locked rotor risk
Matching: EOCRPFZ-H1DZ7W + 200:5 three-phase CT
Paramètre: 1.2 times rated current overcurrent protection (temps inverse); 3 times rated current locked rotor protection (0.5s delay); 3s delay phase loss protection
Outcome: 3 bearing seizure motor burnout accidents avoided, maintenance cost cut by 40%
Cas 2: Chemical Pump Monitoring System
Application: 45kW explosion-proof chemical pump with remote current monitoring demand
Matching: EOCRPFZ-H1DZ7W + Modbus RTU module
Paramètre: 4-20mA output corresponding to 0~200A for PLC acquisition; enabled fault record; 300mA leakage protection threshold
Outcome: Real-time pump monitoring, early abnormal warning, production safety improved by 50%
- Lignes directrices de sélection
Règles rapides
- Montage: H=CT combined type, WR=direct measuring type
- Actuel: 1=0.5~60A, 2=0.5~100A
- Fonction: D=1-channel 4-20mA, H=2-channel, U=communication
- Tension: Z7=85~250VAC/DC, C=24VAC/DC
- Version: W=Standard, Q=Enhanced
Applicable Scenarios of EOCRPFZ-H1DZ7W
General Applications
- Surcharge, perte de phase, locked rotor and leakage protection for 380V three-phase industrial asynchronous motors
- Control circuits requiring 4-20mA remote signal transmission to PLC and host computer
- Panel flush mounting and DIN rail installation inside control cabinets
- Sites with severe voltage fluctuation, 85~250V AC/DC power supply
Applications industrielles
Traitement de l'eau: Pompe à eau, sewage pump, dosing pump, aeration fan
CVC: Centrifugal fan, axial fan, exhaust fan, cooling tower fan
Machinery Manufacturing: Conveyor, mixer, crusher, air compressor
Pétrochimique: Process pump, stirring equipment, explosion-proof matched motor
Building & Métallurgie: Kiln fan, dust removal unit, conveying equipment
Distribution d'énergie du bâtiment: Fire fan, water supply & drainage pump, central air conditioning motor
Power Adaptation Range
Direct measurement: 0.5~60A, fits 0.25~30kW motors
Extended by external CT: Max 3600A, applicable to high-power motors
Scénarios non recommandés
- Motors driven by high-frequency inverter without power frequency operation
- Precision servo and stepper motor dedicated protection circuits
- Extreme environment below -35℃ or above 85℃
- Sealed space with heavy corrosion and dense dust without protective measures
