GEYA G2R Mini ATS Dual Power Automatic Transfer Switch User Manual

1. Introduction

The GEYA G2R-63 Automatic Transfer Switch (ATS) is a PC class infrequent change-over switch designed with a two-station configuration (commonly used for primary power 'A' and standby power 'B'). It is suitable for AC systems operating at 50-60Hz with a rated current ranging from 6A to 63A. The primary function of this ATS is to automatically switch to the backup power supply (Backup power supply B) when the main power supply (Common power supply A) fails, ensuring continuous operation with a switching speed of less than 50 milliseconds. This effectively mitigates disruptions caused by power outages. When both power sources A and B are available, the system prioritizes the use of power source A.

2. Safety Information

Important Notice:

• Read this manual carefully before installing or operating the product.
• Unauthorized disassembly of the product is strictly prohibited to prevent instrument failure or malfunctions.
• Only qualified professionals should install and commission the ATS.
• Install the ATS on a clean, dry surface with adequate airflow.
• Ensure all electrical connections are secure to prevent overheating and fire hazards.
• Avoid Neutral-Ground Bonding: Do not connect the neutral line to the grounding system, as this can create hazards.
• Follow all applicable local electrical codes for safety and reliability.
• Ensure correct phase sequence when connecting input power.
• Avoid using single-pole breakers for neutral/live control lines.
• Switch neutral and live lines simultaneously to prevent malfunctions.
• Prefer automatic mode for reliability; excessive manual use can cause contact wear.
• Switch to manual mode only after power disconnection for maintenance.
• Keep the switch in automatic position normally; return to it after manual use.
• For dual-power ATS, minimize switching and allow at least 1 minute between tests.
• Only qualified personnel should operate the ATS while powered.
• The dual power supply needs to activate the coil switching instantaneously, and the required power cannot be less than 3000W (inverter rated power).
• Do not operate the device at control voltages below 190 V (for 220V models) or 95 V (for 110V models). Operation below these limits may cause overheating and permanent damage.
• When performing manual operation, the mode selection switch must be in the "Manual" position.
• This product has undergone insulation testing before leaving the factory. Incorrect dielectric testing will damage the control system, and it is strictly prohibited to conduct dielectric testing with ATS.

3. Package Contents

The package typically includes:

• GEYA G2R Mini Automatic Transfer Switch unit
• DIN rail (for mounting)
• Mounting screws and fasteners

4. Specifications

Dimensions Diagram

Figure 1: G2R ATS Dimensions (2P and 4P models)

5. Installation

5.1 DIN Rail Installation

1. Insert the upper end of the ATS base into the DIN rail.
2. Push the lower end of the ATS base into the DIN rail until the snap fastener locks securely.

Figure 2: DIN Rail Installation

5.2 DIN Rail Disassembly

1. Insert a screwdriver into the round hole of the DIN rail snap fastener at the bottom of the ATS.
2. Use a screwdriver to pry the DIN rail snap fastener downward.
3. Tilt the ATS upwards and remove it from the DIN rail.

5.3 Screw Mounting

1. Pull out the upper and lower snap fasteners located at the bottom of the ATS.
2. Secure the ATS to the panel with screws.

Figure 3: Screw Mounting

5.4 Wiring Instructions

General Wiring Notes:

• The ATS is equipped with screw-type terminals, each with a width of 7.4 mm, suitable for copper wires with a cross-sectional area of 1 to 16 mm².
• When wiring, strip the wire to a length of 12 to 13 mm. It is recommended to use a duckbill-shaped terminal for secure connection.
• Tighten the screws with a recommended torque of 2.5 Nm to ensure proper tightening without damaging the terminals.
• Connect the phase (AR) and neutral (AN) to the main power input terminals (mandatory).
• Connect the phase (BR) and neutral (BN) to the backup power input terminals (mandatory).
• The power indication signal uses a dry contact output; the generator signal is taken from the common (C) and normally closed (NC) terminals.
• Use copper wires with a cross-sectional area of at least 2.0 mm², and keep control circuit wiring as short as possible.

Important: The input power supply must be connected in the correct phase sequence.

5.4.1 2-Pole Wiring Diagram

Figure 4: 2-Pole Wiring Diagram

5.4.2 4-Pole Wiring Diagram

Figure 5: 4-Pole Wiring Diagram

5.4.3 Detailed Wiring and Indicator Guide

Figure 6: Detailed Wiring and Indicator Guide

Power Indicator Light Status:

• Common Power Supply: When the power supply is abnormal (under voltage or over voltage state), the indicator light flashes.
• Backup Power Supply: When the power supply is abnormal (under voltage or over voltage state), the indicator light flashes.
• Closing Indication: Green indicates ON, Red indicates OFF.

6. Operating Instructions

The GEYA G2R ATS offers both manual and automatic operation modes. Ensure all power sources are connected correctly before operation.

6.1 Manual Mode

In manual mode, you can manually switch between the two power sources using the selector switch. This mode is primarily for maintenance or specific testing scenarios.

• Turn on both power sources.
• Set the product to 'Manual' mode using the selector switch.
• You can now manually switch between the primary and backup power sources.

Caution: Only switch to manual mode after power disconnection for inspection and maintenance. Excessive manual use can cause contact wear.

6.2 Automatic Mode

For reliable and continuous operation, the ATS should normally be kept in automatic mode. In this mode, the switch automatically manages power transfer.

• Turn on both power sources.
• Set the product to 'Auto' mode using the selector switch.
• When the main power supply is disconnected, the product will automatically switch to the backup power supply.
• When the main power supply is restored, the product will automatically switch back to the main power supply.
• Disconnecting the backup power supply while the main power is active will not affect the main power supply.

6.3 Overvoltage and Undervoltage Protection Demonstration

The ATS features built-in overvoltage and undervoltage protection. The following video demonstrates this functionality:

Video 1: GEYA G2R ATS Manual, Automatic, and Voltage Protection Demonstration

Demonstration Summary:

• Undervoltage Scenario: When the main power supply voltage drops below 175V (for 220V systems), the ATS automatically switches to the backup power supply. The power indicator light flashes, indicating an abnormal voltage situation. Once the voltage returns above 195V, the ATS automatically switches back to the main power supply.
• Overvoltage Scenario: When the main power supply voltage increases to 260V or above (for 220V systems), the ATS switches to the backup power source. The power indicator light flashes. Once the voltage is restored to below 240V, the ATS switches back to the main power supply.

Note: When abnormal voltage returns to normal, the indicator light flashes for 15 seconds (with a delay of 15 seconds) and then returns to normal light. The power supply of this circuit will only be considered normal in the chip judgment after 15 seconds before switching between primary and backup logic again.

7. Maintenance

Regular maintenance is crucial for the safe and effective functionality of your GEYA G2R ATS. All maintenance and inspection must be performed by qualified personnel after disconnecting all power supplies.

• Professional Inspection: Engage qualified personnel to regularly inspect the ATS, verifying proper operation. The first inspection should be completed within 6 months of commissioning, and at least once per year thereafter. Increase inspection frequency as needed in harsh environments.
• Routine Cleaning: Periodically remove dust and debris to ensure optimal performance.
• Electrical Contact Check: Inspect electrical contacts for wear or damage and tighten any loose connections to maintain reliable operation.
• Humidity Control: Maintain a dry environment to prevent moisture-related malfunctions.
• Insulation Testing: Routinely test insulation resistance to verify adherence to safety standards. If the ATS is damp or idle for an extended period, dry it thoroughly and measure insulation resistance with a 500V megohmmeter (minimum 10 MΩ).
• Proper Storage: Store the ATS in a protected environment, shielded from dust, humidity, and physical harm when not in use.

8. Troubleshooting

If you encounter issues with your GEYA G2R ATS, consider the following:

• No Power Transfer:
• Verify that both primary and backup power sources are active and within the specified voltage range.
• Check all wiring connections for tightness and correct phase sequence.
• Ensure the ATS is set to 'Auto' mode for automatic switching.
• Indicator Lights Flashing:
• This indicates an abnormal voltage condition (overvoltage or undervoltage) on the respective power supply. Refer to the specifications for voltage protection ranges.
• Allow 15 seconds for the system to re-evaluate the power supply after voltage returns to normal.
• Overheating or Malfunction:
• Ensure the ATS is installed in an environment with adequate airflow and is not operating below the safe control voltage limits (190V for 220V models, 95V for 110V models).
• Check for any loose connections that could cause resistance and heat buildup.
• Confirm the power supply to the control circuit is stable and within 85%-110% of the rated operating voltage. Insufficient voltage can cause coil overheating.
• Physical Damage:
• Do not attempt to disassemble the product. Contact support if physical damage is suspected.

9. User Tips

• Ease of Use: Many users find the G2R ATS very comfortable to work with and easy to turn on, performing its function well.
• Fast Switching: The unit offers fast and imperceptible switching between power sources, which is crucial for uninterrupted power.
• Generator/Solar Inverter Compatibility: This ATS is highly recommended for emergency switching in solar installations or with generators, especially for inverters with sufficient power output (e.g., 6.5kW inverter, or above 3000W for pure sine power supply inverters).
• Installation Considerations: Be aware that the unit might have more depth than standard components, potentially requiring a deeper electrical box for installation.
• Quality Assurance: GEYA products are noted for their excellent quality and robust construction, inspiring confidence in their performance.
• Automatic Mode Preference: For optimal reliability and to prevent contact wear, always prefer using the automatic mode. Manual switching should be reserved for specific maintenance tasks after power disconnection.

10. Warranty and Support

For specific warranty information, technical support, or any questions regarding your GEYA G2R Mini ATS, please contact GEYA Global Electrical Store directly. You may also refer to the comprehensive user manual available in PDF format for detailed guidance:

View User Manual (PDF)

11. Compliance

The GEYA G2R Mini ATS complies with various industry standards and holds the following certifications:

• CE
• CB
• SAA
• ISO
• UKCA
• RoHS