1. Introduction and Overview
The TOMZN TOVPD1 series is an advanced voltage protection device designed to safeguard electrical appliances and systems from damage caused by over-voltage, under-voltage, and power surges. This device features a real-time voltage display, adjustable protection parameters, and an automatic recovery function, ensuring continuous and reliable power supply within safe limits. It is suitable for DIN rail mounting in various electrical distribution boxes.
2. Key Features
- Over-voltage Protection: Automatically disconnects power when voltage exceeds a set limit.
- Under-voltage Protection: Automatically disconnects power when voltage drops below a set limit.
- Automatic Recovery: Reconnects power automatically once voltage returns to normal range after a set delay.
- Real-time Voltage Display: Digital display shows the current working voltage.
- Adjustable Protection Values: Over-voltage and under-voltage protection values are adjustable according to actual electricity demand.
- Adjustable Recovery Delay Time: Customizable delay before automatic reconnection.
- Surge Protection: Provides protection against sudden voltage spikes.
- Voltage Manual Calibration: Allows for manual adjustment of voltage readings for accuracy.
- DIN Rail Mounting: Easy installation on standard 35mm DIN rails.
3. Specifications
| Function | Technical Parameter | Function | Technical Parameter |
|---|---|---|---|
| Input voltage | AC 170-300V | Power-on delay time | 1-500s (default 3s) |
| Over-voltage protection value | 230-300V (default 270V) | Over-voltage recovery value | 225-295V (default 265V) |
| Under-voltage protection value | 140-210V (default 170V) | Under-voltage recovery value | 145-215V (default 175V) |
| Recovery delay time | 1-500s (default 30s) | Action time | 0.1-30s (default 0.5s) |
| Rated current | 40A / 63A | Voltage calibration | -9.5 ~ 9.5 |
| Power consumption | <2W | Electrical and mechanical life | ≥100,000 cycles |
| Boundary dimension | 86 × 38 × 68mm | Wiring | Over-entering down-out |
4. Setup and Installation
The TOMZN TOVPD1 voltage protector is designed for easy installation on a standard 35mm DIN rail.
4.1 DIN Rail Mounting
The device supports 35mm standard rail installation and disassembly, making it simple and convenient to integrate into existing electrical panels.
4.2 Wiring Instructions
Follow the wiring diagram carefully. When connecting the power line, ensure the input (IN) is connected to the L (Live) and N (Neutral) terminals. Screw down firmly to penetrate the insulating layer of the power lines for a secure connection. The output (OUT) terminals connect to your protected load.
5. Operation
The device features a clear digital display and intuitive buttons for monitoring and adjustment.
5.1 Front Panel Overview
- Volt Display: Shows the current voltage in real-time.
- Power Indicator: Green LED indicates the device is powered on.
- >V (Over Voltage) Indicator: Red LED illuminates when an over-voltage condition is detected.
- <V (Under Voltage) Indicator: Red LED illuminates when an under-voltage condition is detected.
- SET Button: Used to enter and confirm settings.
- Up/Down Adjustment Keys: Used to navigate and change values in the settings menu.
5.2 Real-time Voltage Monitoring
The device continuously displays the working voltage. If the displayed voltage is not correct, you can manually calibrate it (refer to Section 6.1 for calibration instructions).
6. Product Setting
To adjust the protection parameters, press the SET button to enter the setting mode. Use the Up and Down arrow keys to navigate through the parameters and change their values. Press SET again to confirm and move to the next parameter, or to exit the settings menu.
6.1 Setting Parameters Flowchart
| Parameter Code | Description | Adjustable Range | Default Value |
|---|---|---|---|
| 230 | Voltage display (current voltage) | N/A (read-only) | N/A |
| P1 | Power-on delay time | 1-500 seconds | 3 seconds |
| U1 | Over-voltage protection value | 230-300 V | 270 V |
| U2 | Over-voltage recovery value | 225-295 V | 265 V |
| U3 | Over-voltage recovery delay time | 1-500 seconds | 30 seconds |
| U4 | Over-voltage protection action time | 0.1-30 seconds | 0.5 seconds |
| U5 | Under-voltage protection value | 140-210 V | 170 V |
| U6 | Under-voltage recovery value | 145-215 V | 175 V |
| U7 | Under-voltage recovery delay time | 1-500 seconds | 30 seconds |
| U8 | Under-voltage protection action time | 0.1-30 seconds | 0.5 seconds |
| U9 | Voltage calibration | -9.5 ~ 9.5 | 0 |
| End | Exit settings | N/A | N/A |
7. Maintenance
The TOMZN TOVPD1 voltage protector is designed for long-term, maintenance-free operation. However, periodic visual inspection is recommended to ensure:
- All wiring connections are secure and free from corrosion.
- The device casing is intact and free from physical damage.
- The digital display is functioning correctly.
- The ventilation slots (if any) are clear of dust and debris.
Always disconnect power before performing any inspection or maintenance.
8. Troubleshooting
If the device is not functioning as expected, consider the following basic troubleshooting steps:
- No Display/No Power: Check the input power supply and ensure connections are secure. Verify that the power source is active.
- Frequent Disconnections: Check the set over-voltage and under-voltage protection values (U1, U5) against your actual line voltage. Adjust if necessary to match your electricity demand.
- Delayed Reconnection: Review the recovery delay times (U3, U7) in the settings. Ensure they are set appropriately for your application.
- Incorrect Voltage Reading: Use the voltage calibration setting (U9) to adjust the display if it does not match a known accurate voltage meter.
For persistent issues, consult a qualified electrician.
9. User Tips
While no specific user tips were available from reviews, remember that this device is a voltage protector. Ensure it is installed by a qualified professional to guarantee proper function and safety. Regularly check the displayed voltage to monitor your power supply's stability.
10. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.
