The APsystems Microinverter EZ1 series is a photovoltaic grid-connected microinverter designed for balcony and DIY solar systems. It integrates several key elements to ensure efficient and safe energy production, including PV modules, a power cord, the EZ1 series microinverter itself, and connectivity options for a router and a cell phone.
Function Description
The primary function of the EZ1 series microinverter is to convert direct current (DC) electricity generated by solar PV modules into alternating current (AC) electricity suitable for the utility grid. Each microinverter features two input channels with independent Maximum Peak Power Tracking (MPPT). This design allows the microinverter to adapt to larger power modules and ensures that each PV module operates at its maximum power point, regardless of the performance of other modules in the array. This is particularly beneficial in situations where some modules might be affected by shade, dust, or different orientations, as it maximizes the overall energy harvest from the solar system.
The microinverter is designed for simple and convenient grid connection. Through an AC extension cable provided by APsystems, the EZ1 can be directly plugged into a standard wall socket, allowing it to start outputting energy without complex wiring or installation procedures.
Usage Features
The EZ1 series offers several user-friendly features that enhance its usability and monitoring capabilities:
- Dual Module Connectivity: Each microinverter connects to two PV modules, each with independent MPPT, optimizing power production.
- High Input Current: The microinverter is designed to accommodate larger power modules by supporting a high input current.
- Integrated Safety Relay: A safety protection relay is integrated into the device, enhancing operational safety.
- Dedicated for Balcony and DIY Systems: The design and features are tailored for small-scale, easy-to-install solar setups, making it ideal for balcony installations and do-it-yourself projects.
- Direct Plug-in: The ability to directly plug into a wall socket simplifies the installation process significantly.
- Wireless Connectivity: The EZ1 series includes built-in Wi-Fi and Bluetooth capabilities. This allows users to directly connect to the microinverter with their cell phones via Bluetooth to access real-time data of their solar systems. For remote monitoring, the Wi-Fi version of the EZ1 can also connect to a router, sending data to cloud servers.
- AP EasyPower APP: The AP EasyPower application provides two modes for monitoring and control:
- Direct Connect Mode: This mode allows the APP to connect to the device via Bluetooth, enabling local monitoring and control without an internet connection.
- Remote Mode: By logging into an account, users can remotely monitor and control the device through a Wi-Fi connection to a router, which then sends data to cloud servers.
- Real-time Data Visualization: The AP EasyPower APP displays real-time data, including current power output, energy produced, running time, working status (Normal or Alarm), and cloud connection status (Online or Offline). It also provides a "Benefits Overview" showing lifetime energy production and equivalent CO2 reduction.
- Status Indications and Error Reporting: The microinverter uses LED indicators to communicate its status:
- Start-up LED: Ten short green blinks upon DC power application indicate a successful microinverter startup.
- Operation LED: A slow flashing green light (5-second gap) signifies normal operation and power production. A slow flashing red light (5-second gap) indicates a protection status or disconnection from the grid.
- GFDI Error: A solid red LED indicates a Ground Fault Detector Interrupter (GFDI) error, prompting users to check DC inputs or contact technical support.
Maintenance Features
The APsystems Microinverter EZ1 series is designed for reliability and minimal maintenance:
- No Specific Regular Maintenance: APsystems microinverters do not require any specific regular maintenance, simplifying long-term ownership.
- Durable Design: The inverter case is designed for outdoor installation and complies with the IP67 environmental enclosure rating, ensuring durability in various weather conditions. It is built to operate at full power in ambient outdoor temperatures up to 65°C (149°F).
- Troubleshooting Guide: A comprehensive troubleshooting guide is available for professional users to diagnose and fix PV installations.
- Technical Support: APsystems provides local technical support to assist with product familiarity and troubleshooting when needed. Users are advised not to attempt repairs themselves, as this could void the warranty.
- Safe Replacement Procedure: In the event of a faulty microinverter, a clear replacement procedure is outlined, emphasizing safety steps such as disconnecting AC power before DC, and observing LED flashes during reconnection to confirm proper operation.
The distributed architecture of the APsystems Microinverter system enhances reliability by eliminating a single point of system failure across the PV array, a common vulnerability in traditional string inverter systems. The low DC voltage at the back of each PV module (typically below 60Vdc) also contributes to safety by reducing the risk of electrical shocks, arcs, and fires, making it "safe to touch" according to fire department standards.
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