TOMZN TOQ5-100PV/2 Dual Power Automatic Transfer Switch User Manual

1. Product Overview

The TOMZN TOQ5-100PV/2 is a high-performance Dual Power Automatic Transfer Switch (ATS) designed for seamless power switching between a PV (photovoltaic) inverter system and city grid power. This device ensures an uninterrupted power supply to your load by automatically switching to the available power source in milliseconds. It is suitable for single-phase applications with rated currents of 63A, 100A, or 125A.

Key Features:

• Millisecond Switching: Achieves automatic power transfer in less than 8ms, ensuring no interruption to connected loads.
• PC Level Performance: Designed for reliable and stable operation.
• Industrial Silver Contacts: Utilizes high-quality silver contacts for extended service life and superior conductive performance.
• Dual Operation Modes: Supports both manual and automatic adjustment methods for flexible control.
• DIN Rail Installation: Easily mounts on a standard 35mm DIN rail in household lighting distribution boxes.
• High Power Load Support: Capable of handling up to 100A, meeting the power needs of various household appliances and industrial equipment.

2. Installation and Setup

Important Safety Information: Installation should only be performed by qualified personnel. Ensure all power sources are disconnected before installation to prevent electric shock.

2.1 Mounting

The TOQ5-100PV/2 is designed for 35mm standard DIN rail installation. It can be directly installed in a household lighting distribution box or similar electrical enclosure.

2.2 Wiring Diagram

This ATS is specifically designed for PV inverter systems as the main power source (Source A) and city power as the backup power source (Source B). It is NOT intended for use with city power and generators as both primary and secondary sources.

Wiring Instructions:

1. Source A (PV & Inverter): Connect your PV inverter system to the 'Source A' terminals. This will be your primary power input.
2. Source B (City Power): Connect the stable city grid power to the 'Source B' terminals. This will be your backup power input.
3. Load Output: Connect your electrical load to the 'Load Output' terminals.
4. Control Lines: Connect the common control lines and backup control lines as indicated in the diagram.
5. Secure Connections: When inserting power lines (L and N), ensure you screw down firmly to penetrate the insulating layer of the power lines for a secure connection.

CRITICAL NOTE: For PV type applications, 'Source B' (City Power) MUST be powered on. This is crucial because the voltage from the inverter (Source A) may not always be stable, and the system relies on a stable 'Source B' for proper operation and switching logic.

3. Operating Instructions

The TOMZN TOQ5-100PV/2 ATS offers both manual and automatic operation modes.

3.1 Automatic Mode

In automatic mode, the switch will detect the presence and stability of power from Source A (PV & Inverter) and Source B (City Power). It will prioritize Source A. If Source A fails or its voltage becomes unstable, the switch will automatically transfer the load to Source B within 8 milliseconds. When Source A recovers, the switch will automatically transfer the load back to Source A.

3.2 Manual Mode

The device features a manual handle and a manual/automatic switch. To operate the switch manually, ensure the selector is set to the 'Manual' position. You can then use the manual handle to switch between Source A and Source B as needed. Always exercise caution when operating manually.

4. Maintenance

The TOMZN TOQ5-100PV/2 ATS is designed for durability with industrial silver contacts, minimizing the need for frequent maintenance. However, regular visual inspections are recommended:

• Check Connections: Periodically inspect all wiring connections to ensure they are tight and free from corrosion. Loose connections can lead to overheating or intermittent operation.
• Cleanliness: Keep the device free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
• Operational Check: Occasionally test the automatic transfer function by simulating a power failure on Source A (if safe to do so and within system capabilities) to ensure it switches correctly.

For any internal issues or repairs, contact a qualified electrician or the manufacturer's support.

5. Troubleshooting

• Device Not Switching:
  • Ensure both Source A (PV Inverter) and Source B (City Power) are providing power.
  • Verify that 'Source B' is powered on, as it is essential for the PV type ATS to function correctly due to potential inverter voltage instability.
  • Check if the switch is in 'Auto' mode. If it's in 'Manual' mode, it will not switch automatically.
  • Inspect all wiring connections for looseness or damage.
• Inconsistent Power Output:
  • Confirm that the input voltage from both sources is within the rated specifications (220-230V AC). This device is rated for 220V AC and may not operate correctly with 100V systems.
  • Ensure the inverter output (Source A) is stable.
• Overheating:
  • Check for loose wiring connections.
  • Ensure the load does not exceed the rated current (63A, 100A, or 125A depending on model).
  • Verify adequate ventilation around the device.

6. Specifications

7. User Tips

• Voltage Compatibility: This ATS is designed for 220-230V AC systems. If your grid power is 110V or a different voltage, this product may not be suitable. Always verify voltage compatibility before installation.
• Stable Backup Power: Ensure your city power (Source B) is consistently stable and powered on. The ATS relies on this stability, especially when the inverter (Source A) might have fluctuating voltage.
• Prioritize PV: The system is configured to prioritize the PV inverter (Source A) as the main power source, switching to city power (Source B) only when Source A is unavailable or unstable.
• Professional Installation: Due to the electrical nature of this device, professional installation by a certified electrician is highly recommended to ensure safety and correct operation.

8. Warranty and Support

For warranty information, technical support, or service inquiries, please contact TOMZN Official Store directly through your purchase platform or their official website. Keep your purchase records for any warranty claims.