Y&H Hybrid Solar Inverter User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Y&H Hybrid Solar Inverter. This advanced all-in-one hybrid solar inverter charger supports both on-grid and off-grid applications, featuring a pure sine wave output and dual MPPT solar charge controllers. It is designed to maximize energy utilization and provide reliable power for various household and office loads.

Figure 1: Y&H 10.2KW 48V Hybrid Solar Inverter highlighting 90-500Vdc PV Input, MPPT 160A, DC 48V Battery, and 24 Months Warranty.

2. Features

• Pure sine wave solar inverter for both on-grid and off-grid applications.
• Capable of running without a battery, provided the solar module voltage exceeds 200V DC.
• Output power factor of 1.0 for efficient energy delivery.
• High PV input voltage range (90~500VDC) for flexible solar panel configurations.
• Integrated Wi-Fi and GPRS for remote monitoring and control via iOS and Android devices.
• Built-in anti-dust kit for enhanced durability in harsh environments.
• Equipped with a 160A (for 10.2KW model) or 120A (for 6.2KW model) MPPT solar charge controller.
• Smart battery charge design to optimize battery lifespan.
• One-click restoration to factory settings for easy configuration reset.
• Dual AC output for main and secondary loads, with power-saving features.
• Built-in Lithium battery automatic activation function to awaken sleeping batteries.
• Intuitive touch button interface for easy operation.
• Comprehensive 360° protection against short circuits, over-load, over current, backfill, over voltage, over-temperature, under voltage, and over charge.
• RGB lighting indicators for different working modes: Purple (PV Mode), Red (Battery Mode), Blue (Utility Mode).

Figure 2: Wi-Fi Communication allows remote control of the system via mobile phone.

Figure 3: Comprehensive 360° protection features including Short Circuit, Over-Load, Over Current, Backfill, Over Voltage, Over-Temperature, Under Voltage, and Over Charge protection.

Figure 4: LCD screen and LED indicators for dynamic display of system data, dust net for protection, and RGB lighting for different working modes (Purple-PV, Red-Battery, Blue-Utility).

3. Specifications

4. Setup

4.1 Basic System Architecture

The inverter/charger is designed to integrate into a comprehensive power system. A typical setup includes:

• The Y&H Hybrid Solar Inverter.
• PV modules (solar panels).
• A battery bank (optional, but recommended for energy storage).
• Connection to a generator or utility grid (for hybrid functionality).

WARNING: DO NOT CONNECT THE SECOND OUTPUT TO THE GRID. DOING SO WILL DAMAGE YOUR INVERTER.

4.2 Port Introduction

Figure 5: Port Introduction. Labels include: (1) LCD display, (2) Status indicator, (3) Charging indicator, (4) Fault indicator, (5) Touch Function buttons, (6) AC input, (7) Main output, (8) Second output, (9) PV1 and PV2 input, (10) RS-232/WIFI/Remove LCD communication port, (11) Battery input.

4.3 Wiring and Technical Specifications

Refer to the diagram below for proper wiring connections and technical specifications for each component.

Figure 6: Wiring and Technical Specifications. This diagram illustrates connections for PV panels, battery, generator, mains power, and electrical appliances. Key details include: PV Power: 10200W, Max PV Open Circuit Voltage: 500V, PV MPPT Voltage Range: 90V-450VDC, Start-up voltage (initial charging): 120VDC, Suggested cable: 6mm², Recommended to connect solar panels in series. Battery Type: Lead-Acid (SLD, AGM, Gel, Flooded) and Lithium battery, Battery voltage: 48V, Wire Size: 2AWG, Cable: 25mm². Max AC Input Voltage: 300Vac, Charging Current: 160A, Suggested cable: 6mm², Recommended breaker: 63A. AC Output Power: 10200W, AC Output Voltage: 220V 230V, Suggested cable: 6mm², Recommended breaker: 63A. Wiring color code: Red for Live/Positive wire, Black for Neutral/Negative wire.

Figure 7: Compatible with multiple battery types (AGM, GEL, FLD, LI, SLD). Note: The inverter can be used without batteries, but the solar module voltage should be more than 200 volts DC when no battery is connected.

5. Operating Modes

5.1 Charging Modes

The inverter offers four selectable charging modes to optimize battery charging:

• Utility First: The utility grid will be the primary source for charging the battery. Solar power will be used as a secondary source if available.
• Solar First: Solar energy will be the primary source for charging the battery. The utility grid will be used as a secondary source if solar power is insufficient.
• Solar and Utility (Default): Both solar power and utility power will charge the battery simultaneously.
• Only Solar: Solar energy is the exclusive source for charging the battery.

5.2 Output Modes

Three output modes are available to prioritize power sources for connected loads:

• Utility First (Default): The utility grid will provide power to the loads as the first priority. If the utility is unavailable, solar power will be used, followed by battery power.
• Solar First: Solar energy is the primary source for powering loads. If solar energy is insufficient, the utility grid will supply power, and then the battery.
• SBU Priority: Solar energy is the primary source for powering loads. If solar energy is insufficient, the battery will supply power to the loads.

Figure 8: Maximize energy use and reduce electricity bills with four charging modes and three discharge modes.

5.3 UPS System Functionality

The inverter can transform your power system into an Uninterruptible Power Supply (UPS), ensuring continuous power to critical loads during outages.

Figure 9: The inverter can be used as an Uninterruptible Power Supply (UPS) for connected appliances.

6. Maintenance

• Dust Prevention: The inverter features a built-in anti-dust kit to prevent dust from entering and extending its service life. Regularly inspect and clean the dust filters if necessary, especially in harsh environments.
• Battery Care: The smart battery charge design helps optimize battery life. Ensure your battery type is correctly configured in the inverter settings. For Lithium batteries, the automatic activation feature will attempt to reactivate sleeping batteries with a small charge current.
• System Reset: In case of unexpected behavior, a one-click restoration to factory settings is available. Refer to the device interface or manual for instructions on performing this reset.
• Environmental Considerations: Ensure the inverter is installed in a well-ventilated area to prevent overheating. Avoid installing it near bedrooms, as the cooling fan may produce noise during operation.

7. Troubleshooting

The Y&H Hybrid Solar Inverter is equipped with comprehensive 360° protection features to ensure safe and reliable operation. If you encounter issues, these protections can help identify the problem:

• Short Circuit Protection: Automatically disconnects power in case of a short circuit to prevent damage.
• Over-Load Protection: Shuts down if the connected load exceeds the inverter's capacity. Reduce the load and restart.
• Over Current Protection: Activates if current draw is too high. Check for faulty appliances or wiring.
• Backfill Protection: Prevents reverse current flow.
• Over Voltage Protection: Protects against excessively high voltage inputs or outputs.
• Over-Temperature Protection: Shuts down if the internal temperature becomes too high. Ensure adequate ventilation and clear any obstructions.
• Under Voltage Protection: Activates if input voltage drops too low, especially from batteries. Recharge or replace batteries.
• Over Charge Protection: Prevents battery overcharging.

For persistent issues, consult the detailed troubleshooting section in the full product manual (if available) or contact customer support.

8. User Tips

• Noise Consideration: The inverter's cooling fan can generate noise during operation. For optimal comfort, avoid installing the unit directly in or near bedrooms.
• Battery-Less Operation: If you plan to operate the inverter without a battery, ensure your solar module array can consistently provide more than 200 volts DC.
• Dual AC Output Management: The secondary AC output is designed to save power by disconnecting when PV and mains power are absent and battery voltage is low. If you do not require this power-saving feature or the secondary output, it is not necessary to connect it.
• Optimal PV Panel Placement: For dual MPPT inputs, consider orienting solar panels to capture sunlight at different times of the day (e.g., Panel A for morning sun, Panel B for afternoon sun) to maximize overall energy harvest.

Figure 10: Dual MPPT Inputs allow for optimized solar harvesting, for example, Panel A for 09:00 AM sun exposure and Panel B for 16:00 PM sun exposure.

9. Warranty and Support

The Y&H Hybrid Solar Inverter comes with a 24-month warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

For technical assistance, troubleshooting, or warranty service, please contact your retailer or the manufacturer's customer support. Provide your product model number and a detailed description of the issue to expedite service.