SVP-916 Automatic Adjustable Voltage Relay

1. Product Overview

The SINOTIMER SVP-916 is an automatic adjustable voltage and current protection device designed to safeguard household appliances and electrical circuits from over-voltage, under-voltage, and over-current conditions. It features a dual LED display for real-time monitoring of voltage and current, and allows for adjustable protection parameters.

Key Features:

• Easy installation and user-friendly operation.
• Automatic power restoration once circuit conditions return to normal.
• Dual LED display for simultaneous voltage (V) and current (A) readings.
• Adjustable over-voltage, under-voltage, and over-current protection thresholds.
• Efficient protection for household appliances against electrical fluctuations.
• Durable construction with high precision and pressure resistance.

2. Specifications

3. Installation and Setup

3.1 Mounting

The SVP-916 is designed for DIN rail mounting. Ensure the DIN rail is securely installed in your electrical panel. Align the device with the rail and press firmly until the blue clip at the bottom engages, securing the protector in place.

3.2 Wiring Diagram

WARNING: Electrical installation should only be performed by qualified personnel. Ensure power is disconnected before wiring.

Connect the SVP-916 according to the wiring diagram below. The device has 'IN' (Input) and 'OUT' (Output) terminals for Live (L) and Neutral (N) connections.

1. Connect the incoming Live (L) and Neutral (N) wires from your power source (e.g., main breaker or power switch) to the 'IN' terminals of the SVP-916.
2. Connect the outgoing Live (L) and Neutral (N) wires from the 'OUT' terminals of the SVP-916 to the load circuit (e.g., air circuit breaker for protected appliances).
3. Ensure all connections are tight and secure.

4. Operating Instructions

4.1 Display and Indicators

The SVP-916 features a dual LED display and several indicator lights:

• Top Display: Shows real-time voltage (V).
• Bottom Display: Shows real-time current (A).
• OV.fast / OV.slow: Over-voltage protection indicator (fast/slow response).
• UV.fast / UV.slow: Under-voltage protection indicator (fast/slow response).
• OC.fast: Over-current protection indicator (fast response).
• ADJ: Adjustment mode indicator.

4.2 Setting Protection Parameters

To adjust the protection thresholds:

1. Press and hold the SET button for approximately 3-5 seconds until the 'ADJ' indicator lights up and the voltage/current value starts flashing. This indicates you are in adjustment mode.
2. Use the UP (▲) and DOWN (▼) buttons to navigate through the adjustable parameters (Over Voltage, Under Voltage, Over Current).
3. When the desired parameter is displayed, use the UP (▲) and DOWN (▼) buttons to change its value.
4. Press the SET button again to confirm the setting and move to the next parameter, or wait for approximately 5-10 seconds for the device to automatically save the settings and exit adjustment mode.

4.3 Automatic Reconnection

When an over-voltage, under-voltage, or over-current event occurs, the SVP-916 will automatically cut off the power to the protected circuit. Once the voltage and current return to within the set normal range, the device will automatically restore power after a short delay (typically a few seconds, which may also be adjustable in some models).

5. Maintenance

• Keep the device clean and free from dust and moisture.
• Periodically check all wiring connections to ensure they are secure.
• Do not attempt to open or repair the device yourself. Refer to qualified technicians for any servicing needs.
• Ensure proper ventilation around the device to prevent overheating.

6. Troubleshooting

6.1 Device Not Powering On

• Check the main power supply to ensure it is active.
• Verify all input (IN) wiring connections are correct and secure.
• Ensure the incoming voltage is within the operational range of the device.

6.2 Power Trips Frequently

• Over Voltage (OV) / Under Voltage (UV) Indicators: If these indicators light up, check your main power supply voltage. Adjust the OV/UV thresholds if necessary, but ensure they are within safe operating limits for your appliances.
• Over Current (OC) Indicator: If this lights up, it means the current drawn by your appliances exceeds the set limit. Reduce the load or increase the over-current threshold (if safe and appropriate for your wiring).
• Check for short circuits or overloaded circuits in your protected system.

6.3 Incorrect Voltage/Current Readings

• Ensure wiring is correct and connections are tight. Loose connections can cause inaccurate readings.
• Compare readings with a calibrated multimeter to verify accuracy.

7. User Tips

• For optimal protection, set the over-voltage and under-voltage thresholds slightly above and below the nominal voltage (e.g., 220V ± 10-15V) to allow for minor fluctuations without unnecessary tripping.
• When setting the over-current limit, consider the maximum continuous current draw of all connected appliances. It's advisable to set it slightly higher than the expected peak load to prevent nuisance tripping, but lower than the circuit breaker's rating.
• Regularly observe the voltage and current displays to understand your typical power consumption and identify any unusual patterns.

8. Warranty and Support

For detailed warranty information, technical support, or further assistance, please contact the seller or refer to the official product documentation. A comprehensive user manual in PDF format may be available for download:

Reference: SVP-916 User Manual (PDF)