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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.
- Definição de código de modelo
| Segmento | Código | Descrição |
| Série de produtos | EOCRPFZ | Electronic Over Current Relay, Panel Flush Mount Type |
| Tipo de montagem | H | Combined type, matched with 3 transformadores de corrente |
| Classificação atual | 1 | Direct measurement: 0.5~60A |
| 5-turn mode: 0.1~2.0A | ||
| TC externa: 1~3600A | ||
| Function Configuration | D | Proteção básica + 1-channel 4-20mA analog output |
| Classificação de tensão | Z7 | Wide voltage supply: 85~250VAC/DC, 50/60Hz |
| Função Adicional | C | Standard version with fault record, LED display and reset function |
- Parâmetros técnicos principais
| Categoria | Especificação | Remark |
| Funções de proteção | Sobrecorrente, undercurrent, perda de fase, locked rotor, rotação reversa, current unbalance, parar, grounding, vazamento, curto-circuito, pré-alarme | Selectable definite time, inverse time and overheating inverse time characteristics |
| Faixa Atual | Direto: 0.5~60A | Wide coverage for diverse motors |
| 5-turn: 0.1~2.0A | ||
| TC externa: 1~3600A | ||
| Fonte de energia | 85~250VAC/DC, 50/60Hz | Strong tolerance to voltage fluctuation |
| Output Signal | 1-channel 4-20mA current loop | For PLC and upper computer monitoring |
| Avaliação de contato | 1-SPST, AC250V/3A resistive load | Standard control contact |
| Modo de exibição | Tela LCD, automatic 5-second cyclic display of three-phase current and leakage current | Manual display switching available |
| Registro de falhas | Records latest 3 fault causes and current values, data retained after power off | Convenient fault analysis |
| Tempo de resposta | 20EM | Fast motor protection |
| Instalação | 35mm DIN rail or panel flush mounting | Recortar: 44-55-66milímetros, Outline: 55-66-77milímetros |
| Working Ambient | Temperatura: -35~85℃, Umidade: ≤95% non-condensing | Suitable for harsh industrial conditions |
| Desempenho de isolamento | Resistência de isolamento: ≥10MΩ@DC500V | Seguro e confiável |
| Withstand voltage: 2kV/50Hz for 1min between circuit and shell | ||
| Número do pedido | EOCRPFZ-H1DZ7W | Official Schneider part number |
- Lista completa de modelos (EOCR-PFZ Series)
| Modelo | Classificação atual | Função | Fonte de energia | Extra Feature |
| EOCRPFZ-H1DZ7W | 0.5~60A | Básico + 1×4-20mA | 85~250VAC/DC | Padrão |
| EOCRPFZ-H2DZ7W | 0.5~60A | Básico + 2×4-20mA | 85~250VAC/DC | Padrão |
| EOCRPFZ-WRDZ7W | 0.5~60A | Básico + 1×4-20mA | 85~250VAC/DC | Padrão |
| EOCRPFZ-WRDUH | 0.5~60A | Básico + Comunicação | 85~250VAC/DC | Padrão |
| 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-saída do canal | 85~250VAC/DC | Padrão |
| EOCRPFZ-WRDZ7WQ | 0.5~60A | Básico + 1×4-20mA | 85~250VAC/DC | Aprimorado |
- Cross-brand Replacement Comparison
| Schneider EOCRPFZ-H1DZ7W | ABB | Siemens | Omron | Feature Comparison |
| Intelligent motor protector | M101-P | 3RW55 | K8DS | Schneider: 3 registros de falhas, 20ms resposta rápida |
| 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: Econômico |
- Falhas Comuns & Solução de problemas
| Fenômeno de falha | Código | Root Cause | Solução |
| Protector fails to start | – | Power cut-off, abnormal voltage | 1. Verifique a fiação |
| 2. Measure supply voltage | |||
| 3. Verify DC polarity | |||
| Falso disparo | 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 | |||
| Falha de comunicação | – | Fiação errada, mismatched baud rate | 1. Check RS485 A/B connection |
| 2. Set 9600bps, 8N1 | |||
| 3. Confirm 120惟 terminal resistor |
- Air Transport Compliance & Certificações
6.1 Certificações
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
Embalagem: 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
- Casos de aplicação
Caso 1: Fan Motor Protection in Steel Plant
Aplicativo: 380V 55kW frequent-start fan motor with locked rotor risk
Matching: EOCRPFZ-H1DZ7W + 200:5 three-phase CT
Contexto: 1.2 times rated current overcurrent protection (tempo inverso); 3 times rated current locked rotor protection (0.5s delay); 3s delay phase loss protection
Outcome: 3 bearing seizure motor burnout accidents avoided, custo de manutenção reduzido em 40%
Caso 2: Chemical Pump Monitoring System
Aplicativo: 45kW explosion-proof chemical pump with remote current monitoring demand
Matching: EOCRPFZ-H1DZ7W + Modbus RTU module
Contexto: 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%
- Diretrizes de seleção
Quick Rules
- Montagem: H=CT combined type, WR=direct measuring type
- Atual: 1=0.5~60A, 2=0.5~100A
- Função: D=1-channel 4-20mA, H=2-channel, U=communication
- Tensão: Z7=85~250VAC/DC, C=24VAC/DC
- Versão: W=Standard, Q=Enhanced
Applicable Scenarios of EOCRPFZ-H1DZ7W
General Applications
- Sobrecarga, perda 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
Aplicações da Indústria
Tratamento de Água: Bomba de água, sewage pump, dosing pump, aeration fan
AVAC: Centrifugal fan, axial fan, exhaust fan, cooling tower fan
Machinery Manufacturing: Conveyor, misturador, crusher, air compressor
Petroquímica: Process pump, stirring equipment, explosion-proof matched motor
Prédio & Metalurgia: Kiln fan, dust removal unit, conveying equipment
Distribuição de energia predial: Fire fan, fornecimento de água & 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
