TOMZN TOQ5-250/4P Automatic Transfer Switch User Manual

1. Safety Information

Warning: To avoid danger of suffocation, keep packaging away from babies and children. This packaging is not a toy.

This device operates with high voltage. Installation and operation must be performed by a qualified electrical professional to ensure safety and proper functionality.

General Precautions:

• Do not place the device near flammable materials.
• Ensure adequate ventilation during operation to prevent overheating.
• Disconnect the device from all power sources before performing any maintenance, inspection, or when storing for extended periods.
• The EU LVD Voltage for this device is High voltage: Above 50Vac or 75Vdc.

2. Product Overview

The TOMZN TOQ5-250/4P is a PC Class dual power Automatic Transfer Switch (ATS) designed to automatically switch between a normal (main) power supply and a reserve (backup) power supply. This ensures continuous power to your load in case of a main power failure.

The switch supports both automatic and manual operation modes, offering flexibility in power management. It features a 'two in one out' wiring method for convenient installation.

3. Specifications

Dimensions:

Package Dimensions:

• Length: 42 cm
• Width: 23 cm
• Height: 26 cm
• Weight: 7.802 kg

4. Setup

Upon receiving the product, it is essential to have a qualified electrical professional perform the installation and initial setup.

Wiring Instructions:

1. Ensure all power sources are disconnected before beginning any wiring.
2. Connect the equipment in accordance with the provided wiring diagram specifications. The device uses a 'two in one out' wiring method.
3. Connect the 'I Power supply' (commonly used) and 'II Power supply' (standby) to their respective terminals.
4. Connect the 'Load side' terminals.
5. Ensure the N-line (neutral) is correctly connected for both power supplies and the load.

Initial Parameter Adjustment:

After wiring, adjust any necessary equipment parameters according to the specific requirements of your electrical system. This may involve setting operational modes or other configurable options if available on your specific model.

5. Operating Instructions

The TOMZN TOQ5-250/4P Automatic Transfer Switch offers both automatic and manual operation modes.

Automatic Mode:

1. Press the button or switch to the 'Automatic' position.
2. In this mode, the switch will automatically transfer between the Normal power supply and the Reserve power supply.
3. The switch prioritizes the Normal power supply. If Normal power is available, the switch will connect to it.
4. If the Normal power supply fails, the switch will automatically transfer to the Reserve power supply (if available).
5. Once the Normal power supply is restored, the switch will automatically transfer back to the Normal power supply.

Manual Mode:

1. Press the button or switch to the 'Manual' position.
2. In this mode, you must manually operate the switch to select between the Normal and Reserve power supplies.
3. Use the provided handle or mechanism to physically switch the direction of power flow as needed.

Important Operational Note:

Power will be interrupted briefly (switch time < 2.5 seconds) during the transfer process between power sources, regardless of automatic or manual operation.

6. Maintenance

Regular maintenance helps ensure the longevity and reliable operation of your Automatic Transfer Switch.

• Cleaning: Keep the device clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
• Ventilation: Periodically check that the ventilation openings are clear and unobstructed to ensure adequate airflow and prevent overheating.
• Connections: Periodically inspect all electrical connections to ensure they are tight and secure. Loose connections can lead to poor performance or safety hazards.
• Storage: If the device is to be stored for an extended period, disconnect it from all power sources and store it in a dry, cool, and well-ventilated area, away from flammable materials.
• Contact Quality: The device is designed with thickened copper contacts for durability and reliable performance.

7. Troubleshooting

This section provides general guidance for common issues. For complex problems, consult a qualified electrician.

• No Power Transfer: Ensure both main and backup power sources are active and correctly wired. Check the operating mode (Automatic/Manual).
• Unexpected Power Interruption: Remember that a brief power interruption (<2.5 seconds) is normal during the transfer process. If interruptions are longer or frequent, check power source stability and wiring.
• Device Not Responding: Verify that the control circuit (if applicable) is receiving power and that all connections are secure.

8. User Tips

• Professional Installation: Always have an electrical professional install and perform initial setup of the Automatic Transfer Switch to ensure safety and compliance with local electrical codes.
• Ventilation is Key: Ensure the installation location provides adequate ventilation to prevent the device from overheating during operation.
• Understand Power Interruption: Be aware that there will be a brief power interruption (less than 2.5 seconds) when the switch transfers between power sources. Plan accordingly for sensitive equipment.
• Regular Checks: Periodically inspect the device and its connections for any signs of wear or damage.

9. Warranty and Support

For detailed warranty information and further technical support, please refer to the official documentation provided by TOMZN.

A comprehensive user manual in PDF format is available for download: TOMZN TOQ5 User Manual (PDF)