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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.
- Definición del código del modelo
| Segmento | Código | Descripción |
| Serie de productos | EOCRPFZ | Electronic Over Current Relay, Panel Flush Mount Type |
| Tipo de montaje | h | Combined type, matched with 3 current transformers |
| Clasificación actual | 1 | Direct measurement: 0.5~60A |
| 5-turn mode: 0.1~2.0A | ||
| External CT: 1~3600A | ||
| Function Configuration | D | Protección básica + 1-channel 4-20mA analog output |
| Clasificación de voltaje | Z7 | Wide voltage supply: 85~250VAC/DC, 50/60Hz |
| Additional Function | W. | Standard version with fault record, LED display and reset function |
- Parámetros técnicos básicos
| Categoría | Especificación | Remark |
| Funciones de protección | sobrecorriente, undercurrent, pérdida de fase, rotor bloqueado, rotación inversa, current unbalance, parar, grounding, fuga, cortocircuito, pre-alarm | Selectable definite time, inverse time and overheating inverse time characteristics |
| Rango actual | Directo: 0.5~60A | Wide coverage for diverse motors |
| 5-turn: 0.1~2.0A | ||
| External CT: 1~3600A | ||
| Fuente de alimentación | 85~250VAC/DC, 50/60Hz | Strong tolerance to voltage fluctuation |
| Señal de salida | 1-channel 4-20mA current loop | For PLC and upper computer monitoring |
| Calificación de contacto | 1-SPST, AC250V/3A resistive load | Standard control contact |
| Modo de visualización | LCD screen, 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 |
| Tiempo de respuesta | 20EM | Fast motor protection |
| Instalación | 35mm DIN rail or panel flush mounting | Cutout: 44-55-66milímetros, Outline: 55-66-77milímetros |
| Working Ambient | Temperatura: -35~85℃, Humedad: ≤95% non-condensing | Suitable for harsh industrial conditions |
| Insulation Performance | Resistencia de aislamiento: ≥10MΩ@DC500V | Seguro y confiable |
| Withstand voltage: 2kV/50Hz for 1min between circuit and shell | ||
| Número de orden | EOCRPFZ-H1DZ7W | Official Schneider part number |
- Full Model List (EOCR-PFZ Series)
| Modelo | Clasificación actual | Función | Fuente de alimentación | Extra Feature |
| EOCRPFZ-H1DZ7W | 0.5~60A | Básico + 1×4-20mA | 85~250VAC/DC | Estándar |
| EOCRPFZ-H2DZ7W | 0.5~60A | Básico + 2×4-20mA | 85~250VAC/DC | Estándar |
| EOCRPFZ-WRDZ7W | 0.5~60A | Básico + 1×4-20mA | 85~250VAC/DC | Estándar |
| EOCRPFZ-WRDUH | 0.5~60A | Básico + Comunicación | 85~250VAC/DC | Estándar |
| EOCRPFZ-C-WRDBWQ | 0.5~60A | Básico + 1×4-20mA | 24VCA/CC | Wide range |
| EOCRPFZ-C-WRDBT | 0.5~60A | Básico + 1×4-20mA | 24VCA/CC | Wide range |
| EOCRPFZ-H3DBW | 0.5~60A | Básico + 3-channel output | 85~250VAC/DC | Estándar |
| EOCRPFZ-WRDZ7WQ | 0.5~60A | Básico + 1×4-20mA | 85~250VAC/DC | Mejorado |
- Cross-brand Replacement Comparison
| Schneider EOCRPFZ-H1DZ7W | TEJIDO | siemens | Omrón | Feature Comparison |
| Intelligent motor protector | M101-P | 3RW55 | K8DS | Schneider: 3 registros de fallas, 20ms fast response |
| 0.5~60A | 0.1~63A | 0.1~63A | 0.1~63A | TEJIDO: Superior communication performance |
| 1×4-20mA | 1×4-20mA | 1×4-20mA | 1×4-20mA | siemens: High PLC compatibility |
| Amplio voltaje | 24~240VAC/DC | 24~240VAC/DC | 24~240VAC/DC | Omrón: Rentable |
- Fallos comunes & Solución de problemas
| Fenómeno de falla | Código | Root Cause | Solución |
| Protector fails to start | – | Power cut-off, abnormal voltage | 1. Comprobar el cableado |
| 2. Medir el voltaje de suministro | |||
| 3. Verify DC polarity | |||
| False tripping | 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, loose wiring, 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 | |||
| Communication failure | – | Cableado incorrecto, mismatched baud rate | 1. Check RS485 A/B connection |
| 2. Set 9600bps, 8N1 | |||
| 3. Confirm 120惟 terminal resistor |
- Air Transport Compliance & Certificaciones
6.1 Certificaciones
CE: Compliant with EU LVD and EMC directives
UL: Meets US safety standards
CSA: Conforms to Canadian safety specifications
RoHS: Lead-free eco-friendly design
6.2 Air Shipment Rules
Battery status: No built-in lithium battery or supercapacitor, classified as non-dangerous goods
Embalaje: 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
Caso 1: Fan Motor Protection in Steel Plant
Solicitud: 380V 55kW frequent-start fan motor with locked rotor risk
Matching: EOCRPFZ-H1DZ7W + 200:5 three-phase CT
Configuración: 1.2 times rated current overcurrent protection (tiempo inverso); 3 times rated current locked rotor protection (0.5s delay); 3s delay phase loss protection
Outcome: 3 bearing seizure motor burnout accidents avoided, costos de mantenimiento reducidos 40%
Caso 2: Chemical Pump Monitoring System
Solicitud: 45kW explosion-proof chemical pump with remote current monitoring demand
Matching: EOCRPFZ-H1DZ7W + Modbus RTU module
Configuración: 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%
- Directrices de selección
Quick Rules
- Montaje: H=CT combined type, WR=direct measuring type
- Actual: 1=0.5~60A, 2=0.5~100A
- Función: D=1-channel 4-20mA, H=2-channel, U=communication
- Voltaje: Z7=85~250VAC/DC, C=24VAC/DC
- Versión: W=Standard, Q=Enhanced
Applicable Scenarios of EOCRPFZ-H1DZ7W
General Applications
- Sobrecarga, pérdida de fase, 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
Industry Applications
Tratamiento de agua: bomba de agua, sewage pump, dosing pump, aeration fan
climatización: Centrifugal fan, axial fan, exhaust fan, cooling tower fan
Machinery Manufacturing: Conveyor, mixer, crusher, air compressor
Petroquímico: Process pump, stirring equipment, explosion-proof matched motor
Edificio & Metalurgia: Kiln fan, dust removal unit, conveying equipment
Building Power Distribution: Fire fan, suministro de agua & 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
Non-recommended Scenarios
- 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
