1. Product Overview
The GEYA Mini ATS (Automatic Transfer Switch) is designed for the automatic or manual conversion between two power supplies. It continuously monitors the primary and backup power sources to ensure a stable and reliable electricity supply. This device is compatible with various power inputs, including mains electricity, generators, and photovoltaic systems.
When the primary power supply becomes abnormal, the switch automatically transfers the load to the backup power supply, minimizing interruptions. Once the primary power supply returns to normal, the switch automatically reverts the load back. This functionality is crucial for applications where power continuity is essential, such as hospitals, cold storage facilities, and data centers.
Key features include:
- Automatic and Manual Operation Modes
- Integrated Over-Voltage and Under-Voltage Protection
- Fast Switching Time (typically less than 100 milliseconds)
- Indicator Lights for Power Source Status
- Suitable for 2-pole, 3-pole, and 4-pole systems (depending on model)
2. Safety Information
WARNING: Electrical installation and maintenance should only be performed by qualified personnel. Failure to follow these instructions may result in serious injury or death.
- Always disconnect all power sources before installing, servicing, or performing any maintenance on the transfer switch.
- Ensure that the voltage and current ratings of the transfer switch match your electrical system requirements.
- Use appropriate personal protective equipment (PPE) during installation and maintenance.
- Verify all connections are secure and properly insulated to prevent short circuits.
- Do not operate the switch if it appears damaged or malfunctioning.
3. Product Components and Dimensions
Familiarize yourself with the components and physical dimensions of the GEYA Mini ATS for proper installation planning.
This image illustrates the product dimensions and identifies key components such as control power, selection switch, manual knob, normal power main circuit terminal, alternative power main circuit terminal, load side main circuit terminal, and power indicators.
Key Components:
- Control Power
- Selection Switch (Auto/Manual)
- Manual Knob
- Normal Power Main Circuit Terminal (Source A)
- Alternative Power Main Circuit Terminal (Source B)
- Load Side Main Circuit Terminal
- Power A Indicator
- Power B Indicator
Dimensions (approximate for 3P-100A model):
- Width: 125 mm
- Height: 103 mm
- Depth: 78.5 mm
- Safety Distance S1: >= 30mm
- Safety Distance S2: >= 203mm
4. Technical Specifications
The following table details the main technical parameters for the GEYA W2R-3P 100A model.
This image provides a detailed table of technical specifications for the GEYA W2R-100 series, including current ratings, voltage, electrical life, and conversion times.
| Parameter | Value |
|---|---|
| Rated Current (Ie) | 100 A |
| Insulation Voltage (Ui) | AC690V, 50Hz |
| Rated Voltage (Ue) | AC400V, 50Hz |
| Classification | PC class (can be manufactured and withstand without short circuit current) |
| Utilization Category | AC-33iB |
| Pole No. | 3P |
| Weight (approx.) | 0.72 kg |
| Electrical Life | 2000 times |
| Manual Operation Life | 5000 times |
| Rated Short Circuit Current (Iq) | 50KA |
| Short Circuit Protection Device | RT16-00-63A (fuse) |
| Rated Impulse Withstand Voltage | 8KV |
| Control Circuit Rated Voltage | AC220V/50Hz |
| Control Circuit Normal Working Conditions | 85-110%Us |
| Auxiliary Circuit | 2 relays, each with 2 sets of contact converter contact capacity, AC220V/50Hz Ie=5V |
| Conversion Time of Contactor | <50ms |
| Operation Conversion Time | <50ms |
| Return Conversion Time | <50ms |
| Power Off Time | <50ms |
| Over-Voltage Protection (220V) | 260V (Recovery: 240V) ± 5V |
| Under-Voltage Protection (220V) | 175V (Recovery: 195V) ± 5V |
| Over-Voltage Protection (110V) | 145V (Recovery: 130V) ± 5V |
| Under-Voltage Protection (110V) | 85V (Recovery: 95V) ± 5V |
| Material | Copper (contacts) |
| International Protection Rating | IP54 |
| Certification | CE |
5. Setup and Installation
Installation of the GEYA Mini ATS requires electrical expertise. It is strongly recommended that a qualified electrician performs the installation to ensure safety and compliance with local electrical codes.
5.1 Wiring Diagrams
The following diagrams illustrate typical wiring configurations for the transfer switch. Ensure correct connection of the common power supply (Source A), standby power supply (Source B), and load output.
This image displays wiring diagrams for different pole configurations (2P, 3P, 4P) of the GEYA Mini ATS, detailing connections for common power, standby power, and load.
5.2 Installation Steps
- Mounting: The switch is designed for guide rail installation. Securely mount the device within an appropriate electrical enclosure.
- Power Disconnection: Before making any connections, ensure that both the primary and backup power sources are completely disconnected and locked out.
- Connect Power Source A: Connect the main power supply (Source A) to the designated terminals.
- Connect Power Source B: Connect the backup power supply (Source B) to its designated terminals.
- Connect Load: Connect the load circuit to the load output terminals.
- Control Wiring: Connect any necessary control wiring as per the specific system requirements.
- Verify Connections: Double-check all wiring for correctness, tightness, and proper insulation.
- Restore Power: Once all connections are verified, restore power to the system cautiously and observe the switch's operation.
This image highlights the robust construction details of the switch, including silver contacts for durability, copper terminals for strong conductivity, and a guide rail installation mechanism for secure mounting.
6. Operating Instructions
The GEYA Mini ATS offers both automatic and manual operation modes.
6.1 Automatic Mode
In automatic mode, the switch continuously monitors the primary (Source A) and backup (Source B) power supplies. It will automatically transfer the load based on the availability and stability of these sources.
- When the normal power supply A is working properly, the 'A' (red light) indicator will be on.
- If the normal power supply A becomes abnormal (e.g., due to undervoltage, overvoltage, or outage), the 'A' (red light) indicator will turn off, and the switch will automatically transfer the load to power supply B. The 'B' (red light) indicator will then turn on.
- When power supply A recovers and stabilizes, the switch will automatically revert the load back to power supply A.
6.2 Manual Mode
In manual mode, you can manually select between power supply A and power supply B using the red handle on the right side of the switch.
- To select power supply A, operate the red handle towards power supply A. The 'A' (red light) indicator will turn on.
- To select power supply B, operate the red handle towards power supply B. The 'B' (red light) indicator will turn on.
- Ensure the automatic/manual selection switch is set to 'Manual' before attempting manual operation.
6.3 Over-Voltage and Under-Voltage Protection
The switch includes built-in protection against voltage fluctuations:
- For 220V systems: Undervoltage protection activates at 175V (recovers at 195V). Overvoltage protection activates at 260V (recovers at 240V). (± 5V tolerance)
- For 110V systems: Undervoltage protection activates at 85V (recovers at 95V). Overvoltage protection activates at 145V (recovers at 130V). (± 5V tolerance)
This image explains the core functions of the automatic transfer switch: fast switching (under 100 milliseconds) and intelligent control, including self-restoring, over-voltage, and under-voltage protection.
7. Maintenance
Regular maintenance helps ensure the longevity and reliable operation of your GEYA Mini ATS.
- Visual Inspection: Periodically inspect the switch for any signs of physical damage, loose connections, or overheating.
- Cleaning: Keep the switch free from dust, dirt, and moisture. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Connection Checks: Annually, or as needed, verify that all electrical connections are tight and secure.
- Functionality Test: If safe to do so, periodically test the automatic transfer function by simulating a power outage on the primary source.
- Professional Service: For any complex issues or internal inspections, consult a qualified electrician.
8. Troubleshooting
If you encounter issues with your GEYA Mini ATS, refer to the following troubleshooting guide. Always ensure power is disconnected before inspecting internal components.
| Problem | Possible Cause | Solution |
|---|---|---|
| Switch does not transfer automatically | 1. Automatic mode not selected. 2. Primary power source is stable. 3. Control circuit issue. 4. Over/under voltage protection active. | 1. Ensure the selection switch is set to 'Auto'. 2. Verify primary power status. Simulate outage if testing. 3. Check control wiring and auxiliary circuit. 4. Check voltage levels; wait for recovery or address source issue. |
| No power to load after transfer | 1. Backup power source failure. 2. Loose connections. 3. Internal fault in the switch. | 1. Verify backup power source is active and stable. 2. Inspect all wiring connections for tightness. 3. Contact a qualified electrician for inspection. |
| Indicator lights not working | 1. No power to the switch. 2. Faulty indicator light. 3. Control circuit issue. | 1. Check power supply to the switch. 2. This typically does not affect functionality, but contact support if concerned. 3. Consult a qualified electrician. |
| Switch makes unusual noises or smells burning | 1. Overload. 2. Loose connections. 3. Internal component failure. | 1. Immediately disconnect all power. Reduce load if possible. 2. Inspect and tighten all connections. 3. Do not operate. Contact a qualified electrician immediately. |
If problems persist after attempting these solutions, contact GEYA customer support or a certified electrician.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact GEYA customer service or refer to the official GEYA website. Keep your purchase receipt and product model number (W2R-3P 100A) handy when contacting support.
Manufacturer: ZHEJIANG GEYA ELECTRICAL CO.,LTD
Brand: GEYA