1. Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of the Walfront Voltage Phase Sequence Protector. This device is designed to monitor 3-phase AC voltage systems and provide protection against overvoltage, minvartage, voltage unbalance, phase error, phase loss, and zero line disconnection. Please read this manual thoroughly before installation and operation to ensure proper use and safety.
2. Informació de seguretat
Always adhere to local electrical codes and safety regulations during installation and operation. Disconnect power before performing any wiring or maintenance. Only qualified personnel should install and service this device.
- Ensure power is disconnected before wiring or servicing.
- Verifiqueu el voltage and current ratings match the application.
- No feu servir el dispositiu si està danyat.
- Mantingueu el dispositiu allunyat de la humitat i de les temperatures extremes.
3. Producte acabatview
The Walfront Voltage Phase Sequence Protector (Model: Walfrontxgm7f6na2w6572) is a compact and versatile device designed for industrial electrical systems. It features a standard 35mm DIN rail mounting for easy integration into control cabinets.

Figura 3.1: Frontal view of the Voltage Phase Sequence Protector, showing the LCD display and control buttons.

Figure 3.2: Dimensions of the Voltage Phase Sequence Protector (approx. 80x43x54mm).
Característiques principals:
- Standard and Universal: Modular structure with 35mm rail installation, suitable for a wide range of voltage applications (AC 208 to 480V).
- Multiple Reset Methods: Supports both automatic and manual reset modes.
- Adjustable Values: Overvoltage, minvartage, and unbalance thresholds, along with action times, are adjustable.
- Protecció integral: Real-time monitoring for overvoltage, minvartage, voltage unbalance, phase error, phase loss, and zero line disconnection.
- Aplicació àmplia: Ideal for machine tools, cranes, control cabinets, compressors, cutting machines, elevators, air conditioners, freezers, charging piles, and motors.
Video 3.1: A demonstration of the Walfront Voltage Phase Sequence Protector, showcasing its physical appearance and handling.
4. Configuració i instal·lació
El Voltage Phase Sequence Protector is designed for 35mm DIN rail installation. Follow the steps below for proper setup.
4.1 Esquema de cablejat

Figure 4.1: Standard wiring diagram for the Voltage Phase Sequence Protector. The contact shown is the state of the protector when it is de-energized or faulty.
4.2 Passos d'instal·lació
- Muntatge: Securely attach the protector to a standard 35mm DIN rail in your control cabinet.
- Connexió d'alimentació: Connect the L1, L2, and L3 input circuits to the corresponding terminals on the protector. Ensure correct phase sequence.
- Connexió de sortida: Connect the output contacts (1CO and 1NC) to your control circuit as per your application's requirements. Refer to the wiring diagram (Figure 4.1).
- Verifica les connexions: Double-check all wiring for correctness and secure connections before applying power.
5. Instruccions de funcionament
The protector features an LCD display and control buttons for configuration and monitoring.
5.1 Pantalla i controls
- Pantalla LCD: Mostra el volum en temps realtage readings, fault indicators, and menu options.
- RST Button (Red): Used for manual reset of the protector after a fault.
- '+' Button (Black): Used to increase values or navigate menu options.
- '-' Button (Black): Used to decrease values or navigate menu options.
- MOD Button (Green): Used to enter menu, confirm selections, or switch display modes.
5.2 Ajust de paràmetres
To adjust parameters such as overvoltage/undervoltage thresholds, unbalance rate, and action times:
- Manteniu premut el botó MOD botó per entrar al menú de configuració.
- Utilitza el '+' i '-' buttons to navigate through the parameters.
- Premeu MOD to select a parameter for editing.
- Ús '+' i '-' per ajustar el valor.
- Premeu MOD again to confirm the new value and exit the editing mode for that parameter.
- Repeat for other parameters or press and hold MOD per sortir del menú de configuració.
5.3 Reset Methods
- Restabliment automàtic: If configured for automatic reset, the protector will clear the fault and resume operation after the fault condition is resolved and the reset delay time has elapsed.
- Restabliment manual: If configured for manual reset, or if an automatic reset fails, press the RST button to clear the fault and restore operation.
6. Manteniment
The Walfront Voltage Phase Sequence Protector requires minimal maintenance. Regular checks ensure optimal performance and longevity.
- Inspecció periòdica: Inspeccioneu visualment el dispositiu i les seves connexions regularment per detectar qualsevol signe de danys, cablejat solt o sobreescalfament.
- Neteja: Mantingueu el dispositiu net i lliure de pols i brutícia. Feu servir un drap sec i suau per netejar-lo. No utilitzeu netejadors líquids.
- Condicions ambientals: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent malfunction.
7. Solució De Problemes
Aquesta secció ofereix solucions a problemes comuns que podeu trobar.
| Problema | Causa possible | Solució |
|---|---|---|
| El dispositiu no s'encén. | Sense entrada voltage; incorrect wiring; internal fault. | Check input power supply (L1, L2, L3). Verify wiring connections. If problem persists, contact support. |
| Protector trips frequently. | Voltage fluctuations; incorrect parameter settings; actual fault condition. | Vol d'entrada del monitortage stability. Adjust overvoltage/undervoltage/unbalance thresholds if necessary. Investigate and resolve actual electrical faults. |
| Cannot reset after a trip. | Fault condition still present; device set to manual reset and not pressed; internal error. | Ensure the fault condition is resolved. Press the RST button. If auto-reset is enabled, check reset delay. If problem persists, contact support. |
| Display is blank or erratic. | Power issue; display damage; internal fault. | Check power supply. Gently tap the device to see if display recovers (may indicate loose connection). If problem persists, contact support. |
8. Especificacions
Detailed technical specifications for the Walfront Voltage Phase Sequence Protector.
| Paràmetre | Valor |
|---|---|
| Tipus d'element | Voltage Phase Sequence Protector |
| Material | ABS |
| Circuit d'entrada | L1, L2, L3 (3-Phase) |
| Voltage Rang | AC 208 to 480V |
| Freqüència de treball | 45-65 Hz |
| Tipus de sortida | 1CO and 1NC (Normally Open and Normally Closed) |
| Overvoltage/Undervoltage Action Time | 0.1-999 s (ajustable) |
| Unbalance Rate | 1-50% (Adjustable) |
| Unbalanced Hysteresis | 1-10% |
| Unbalanced Delay | 0.1-999 s (ajustable) |
| Phase Loss Action Time | 0.1-30 segons |
| Phase Error Action Time | 0.1-30 segons |
| Retard d’encesa | 0-999 segons |
| Mode de reinici | Auto / Manual |
| Reinicia el retard | 0.1-999 segons |
| Mode de visualització | LCD display each action status |
| Formulari de contacte | 1 group NO, 1 group NC |
| Capacitat de contacte | 6A 250VAC / 30VDC (resistive) |
| Dimensions (LxWxH) | Aprox. 80 x 43 x 54 mm / 3.1 x 1.7 x 2.1 polzades |
| Mètode d'instal·lació | 35mm guide rail |
| Classe de protecció | IP20 |
| Entorn de treball | -25℃ to 65℃, ≤85%RH |
| Durabilitat mecànica | 1,000,000 vegades |
| Força dielèctrica | >2kVAC 1min |
9. Garantia i Suport
Walfront products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact Walfront customer service through the retailer where you purchased the product or visit the official Walfront store on Amazon:
Visita la botiga Walfront a Amazon
Please have your product model number (Walfrontxgm7f6na2w6572) and purchase information ready when contacting support.