Walfront SVP-916 Adjustable Over and Under Voltage Protector (80A) User Manual

1. Safety Information

Please read this manual carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or damage to the device or connected equipment.

Installation and maintenance should only be performed by qualified personnel.
Ensure the power supply is disconnected before any wiring or maintenance.
Verify that the voltage and current ratings of the protector match your application requirements.
Do not operate the device in wet or damp conditions.
Do not attempt to repair or modify the device. Contact support if issues arise.

2. Product Overview

The Walfront SVP-916 is an adjustable over and under voltage protector designed to safeguard electrical equipment from voltage fluctuations. It features real-time voltage and current display, adjustable protection parameters, and automatic recovery functions.

Key Features:

Overvoltage Protection
Undervoltage Protection
Real-time Voltage Display (Voltage Measurement)
Adjustable Overvoltage Value and Recovery Value
Adjustable Undervoltage Value and Recovery Value
Adjustable Overvoltage and Undervoltage Action Times
Adjustable Fault Recovery Delay Time
Adjustable Power-on Delay Time
Reset Mode Selection
Fault Query Function
Factory Reset Function

Walfront SVP-916 Adjustable Voltage Protector front view — Figure 2.1: Front view of the Walfront SVP-916 Adjustable Voltage Protector. This image shows the digital display for voltage and current, along with the 'SET', 'Up', and 'Down' buttons for configuration. Indicator lights for overvoltage (OV), undervoltage (UV), and overcurrent (OC) are also visible.

3. Installation

The SVP-916 is designed for DIN rail mounting. Ensure proper electrical connections are made according to the wiring diagram.

3.1 Mounting

Mount the device securely onto a standard 35mm DIN rail in an appropriate electrical enclosure. Ensure adequate ventilation and clearance around the device.

3.2 Wiring Diagram

Connect the input (IN) and output (OUT) terminals as shown in the diagram below. Ensure correct polarity (Line 'L' and Neutral 'N') and secure all connections.

Wiring diagram for Walfront SVP-916 Voltage Protector — Figure 3.1: Wiring diagram for the SVP-916. This diagram illustrates how to connect the voltage protector between a power switch and an air circuit breaker, showing the Line (L) and Neutral (N) connections for both input and output.

3.3 Dimensions

Refer to the diagram below for the physical dimensions of the SVP-916 to ensure proper fit and clearance in your installation.

Dimensions of Walfront SVP-916 Voltage Protector — Figure 3.2: Dimensions of the SVP-916. This image provides measurements in millimeters and inches for the device's height, width, and depth, crucial for installation planning.

4. Operating Instructions

4.1 Display and Indicators

The device features a dual digital display and indicator LEDs:

Top Display: Shows real-time voltage (V).
Bottom Display: Shows real-time current (A).
OV:fast LED: Indicates overvoltage condition.
UV:slow LED: Indicates undervoltage condition.
OC:fast LED: Indicates overcurrent condition (if applicable to the specific model, though primary function is voltage protection).
ADJ: Indicates adjustment mode.

4.2 Button Functions

SET Button: Enters parameter setting mode and cycles through parameters.
Up (▲) Button: Increases the value of the selected parameter.
Down (▼) Button: Decreases the value of the selected parameter.

4.3 Parameter Adjustment

To adjust protection parameters:

Press and hold the SET button for approximately 3 seconds to enter parameter setting mode. The ADJ indicator will illuminate.
Press the SET button repeatedly to cycle through the adjustable parameters. Each parameter will be displayed on the screen.
Use the Up (▲) and Down (▼) buttons to adjust the value of the currently displayed parameter.
After setting all desired parameters, wait for approximately 5-10 seconds without pressing any buttons. The device will automatically exit setting mode and save the changes.

Adjustable Parameters:

Overvoltage Value Range: 130V-150V-OFF (Default: 140V)
Overvoltage Recovery Value: Adjustable
Overvoltage Action Time: Adjustable
Undervoltage Value Range: OFF-80V-100V (Default: 90V)
Undervoltage Recovery Value: Adjustable
Undervoltage Action Time: Adjustable
Fault Recovery Delay Time: 2-512 seconds (Default: 60s)
Power-on Delay Time: 2-255 seconds (Default: 2s)

Note: The specific voltage ranges for over/undervoltage protection are configured for 100-130VAC systems. Always refer to the values displayed on your device and ensure they are appropriate for your electrical system.

5. Maintenance

The Walfront SVP-916 is designed for minimal maintenance. Regular inspection can help ensure its continued reliable operation.

Cleaning: Periodically clean the exterior of the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
Inspection: Annually inspect wiring connections to ensure they are tight and free from corrosion. Check for any signs of physical damage to the device.
Environment: Ensure the operating environment remains within specified temperature and humidity ranges.

6. Troubleshooting

This section provides guidance for common issues. For problems not listed here, contact customer support.

6.1 Fault Query

The device includes a fault query function to review past protection events. Consult the full product documentation or contact support for specific instructions on accessing fault logs.

6.2 Common Issues

Device Not Powering On:
- Check input power supply.
- Verify wiring connections are secure and correct.
- Ensure the power-on delay time has elapsed.
Constant Tripping (Overvoltage/Undervoltage):
- Check the actual line voltage with a multimeter to confirm stability.
- Review and adjust the overvoltage/undervoltage protection thresholds to suit your system's normal operating range.
- Adjust the action time and recovery delay settings if brief fluctuations are causing nuisance trips.
Settings Not Retained After Power Cycle:
- Ensure settings are properly saved by allowing the device to exit adjustment mode automatically after making changes.
- If the issue persists, perform a factory reset and reconfigure.

6.3 Factory Reset

To restore the device to its factory default settings, consult the specific instructions provided with your device or contact Walfront customer support. This action will erase all custom settings.

7. Specifications

Parameter	Value
Model	SVP-916
Rated Voltage	100-130VAC 50/60Hz
Rated Current (Adjustable)	1-80A (for 80A model)
Overvoltage Value Range	130V-150V-OFF (Default: 140V)
Undervoltage Value Range	OFF-80V-100V (Default: 90V)
Recovery Delay Time	2-512s (Default: 60s)
Boot Delay Time	2-255s (Default: 2s)
Mechanical & Electrical Performance	≥4000 times
Disconnect Capacity (Overvoltage)	(Values provided in source data, e.g., 221~300V, appear to be for 220V systems. Please refer to device markings for 100-130VAC specific values.)
Disconnect Capacity (Undervoltage)	(Values provided in source data, e.g., 219~150V, appear to be for 220V systems. Please refer to device markings for 100-130VAC specific values.)
Material	Plastic
Mounting Type	DIN Rail (Note: Some documentation may list 'Tabletop', but the device is designed for DIN rail mounting.)
Item Weight	6.5 ounces

Note: Some specification values, particularly for disconnect capacity, appear to be listed for a 220V system in the provided data. For the 100-130VAC model, the actual disconnect capacity values will correspond to the lower voltage range. Always refer to the specific markings on your device and the most current product documentation for precise specifications.

8. Warranty and Support

For warranty information, technical support, or service inquiries, please contact Walfront customer service through their official channels or the retailer from whom the product was purchased.

Keep your purchase receipt as proof of purchase for warranty claims.

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Walfront SVP-916