GEYA W2R-100 Dual Power Automatic Transfer Switch User Manual

1. Important Safety Information

Please read this manual carefully before installing or operating the product. Failure to follow these instructions may result in equipment damage, personal injury, or improper operation. If you have any questions, please contact the manufacturer.

• Unauthorized disassembly of the product is strictly prohibited to prevent instrument failure or malfunctions.
• Installation and wiring must be performed by qualified personnel familiar with electrical systems and this manual.
• Before installation, carefully check the ATS for any damage or missing parts.
• Manually operate the mechanism using the operation handle to verify smooth movement, correct switching of all phases, and the load status of both power sources.
• Ensure the text on the ATS panel is visible from the front. Contact the manufacturer if the correct mounting orientation cannot be achieved due to wiring or space constraints.
• Install suitable circuit breakers in accordance with IEC 60947-6-1 and the distribution system design to ensure personnel and equipment safety.

2. Product Overview

The GEYA W2R-100 is a mini dual power automatic transfer switch designed to seamlessly switch between two power sources, such as PV/solar inverter power and city power or a generator. It ensures uninterrupted power supply to your load.

Figure 2.1: GEYA W2R-100 Automatic Transfer Switch

2.1 Component Identification

Figure 2.2: Product Overview Diagram

1. Composite Terminal Block for Main Power A
2. Main Power Indicator
3. Standby Power Indicator
4. Manual/Automatic Selector Switch
5. Composite Terminal Block for Standby Power B
6. Main Power Terminals
7. Standby Power Terminals
8. Mounting Hole (4P)
9. Manual Rotary Switch
10. Load Terminals

3. Setup and Installation

3.1 Mounting

The W2R-100 ATS can be mounted on a DIN rail or directly to a panel using screws.

3.1.1 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.

3.1.2 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.

3.1.3 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.

3.2 Wiring Instructions

All wiring must be performed by qualified personnel. Ensure all power sources are disconnected before wiring.

• Connect the phase (AR) and neutral (AN) to the main power input terminals (Source A - mandatory).
• Connect the phase (BR) and neutral (BN) to the backup power input terminals (Source B - 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.
• Connect the load to the lower terminals on the backup power side using stepped wiring.
• Remove the isolation board before wiring, connect the load, reinstall the board, and ensure proper alignment. It is recommended to connect the load before wiring the backup power.

Figure 3.1: Wiring Diagrams and Product Dimensions

3.2.1 2-Pole (2P) Wiring Diagram

Connect the Service control line and Neutral (N) from the Common power supply. Connect the Standby power supply. Connect the Backup control line and Load output.

3.2.2 3-Pole (3P) Wiring Diagram

Connect the Common power supply, Common control line, Common Neutral line, and Alternate control line. Connect Backup power and Load output.

3.2.3 4-Pole (4P) Wiring Diagram

Connect L1, L2, L3, and N from the Common power supply. Connect L1, L2, L3, and N from the Backup power. Connect the Load output.

4. Operation

4.1 Working Conditions

• Ambient Temperature Range: -5°C to +40°C (24-hour average must not exceed +35°C).
• Altitude: Should not exceed 2000 meters.
• Operating Humidity: Up to 50% at +40°C; up to 90% at +25°C (condensation prevention required).
• Contamination Level: Level 3.
• Mounting Orientation: The ATS can be installed vertically in cabinets.

4.2 Manual / Automatic Operation

• Automatic (Electric) Operation: Ensures reliable switching. This is the recommended mode for normal operation.
• Manual Operation: May cause contact wear and unstable performance due to variations in operator speed. Switch to manual mode only after power is disconnected and maintenance is completed.
• Always return the switch to automatic mode promptly after any manual operation.

4.3 Control Circuit (TSE)

• The TSE is instantly energized during transfer. If internal switches malfunction after transfer, the control coil may be damaged.
• The coil operates reliably within 85%-110% of its rated voltage. Insufficient voltage can cause overheating and failure. Ensure a stable power supply to avoid coil damage.

4.4 Safe Operating Limits

Do not operate the device at control voltages below:

• 190 V (for models with Ue: AC 220 V, 50/60 Hz)
• 95 V (for models with Ue: AC 110 V, 50/60 Hz)

Operation below these limits may cause overheating and permanent damage.

5. Maintenance

Maintenance and inspection must be performed by qualified personnel after disconnecting all power supplies. Regular maintenance ensures the longevity and reliable operation of the ATS.

• Initial Inspection: Complete within 6 months of commissioning.
• Routine Inspection: At least once per year thereafter. In harsh environments, increase inspection frequency as needed.
• Key Tasks:
  • Remove dust and debris.
  • Check contact parts for damage, discoloration, or burn marks.
  • Measure contact resistance if necessary.
• Moisture/Storage: 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).
• Store the ATS in a clean, dry environment, protected from mechanical impact.

6. Troubleshooting

This section provides guidance on common issues. For problems not listed or if issues persist, contact technical support.

• Overheating or Permanent Damage: Can occur if the device is operated below its safe control voltage limits (190V for 220V models, 95V for 110V models). Ensure stable and correct control voltage.
• Control Coil Damage: May result from unstable power supply or internal switch malfunctions during transfer. Ensure a stable power supply to the control circuit.
• Instrument Failure/Malfunctions: Often caused by unauthorized disassembly. Do not attempt to repair the unit yourself; contact qualified service personnel.
• Switching Issues: If the ATS does not switch smoothly or correctly, verify all wiring connections are secure and correct according to the diagrams. Check for any physical obstructions or damage.

7. Specifications

7.1 Dimensions (Approximate)

Safety Distance: S1 > 30mm (refer to Figure 3.1 for diagram).

8. User Tips

• Reliable Switching: The W2R-100 is noted for its integrated logic circuit, contributing to reliable and efficient power transfer.
• Included Accessories: Some packages may include useful accessories like crimped cables, mini screwdrivers for assembly, and an aluminum DIN rail bracket, which can simplify installation.
• Performance: Users often report great quality and excellent switching times, ensuring minimal disruption during power transitions.
• Quality Assurance: The product undergoes insulation testing before leaving the factory. Avoid conducting dielectric testing with the ATS as it can damage the control system.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the manufacturer or your authorized dealer. Please have your product model number (W2R-100) and purchase details ready.

An additional user manual in PDF format may be available for download: View PDF Manual