Micro Inverter
WVC-2800 USER MANUAL
This manual provides detailed information for the Kaideng WVC-2800 Micro Inverter, a communication-type intelligence micro grid-connected inverter.
Key Features
- Maximum power point tracking (MPPT)
- Reverse power transmission
- Adaptive voltage/frequency
- Internal high precision meter
- I/O, fully isolated
- App monitoring system
- No installation, no maintenance
- Forward full-bridge topology
Specifications
| Parameter | WVC-2800 |
|---|---|
| Maximum input power | 3000 Watt |
| Output voltage mode | 120/230V Auto switch |
| PV Open circuit voltage | 30-60VDC |
| Operating voltage range | 22-60V |
| Starting voltage range | 22-60V |
| Short-circuit current | 12.8A |
| Maximum working current | 10.7A |
| Output parameters @120V | |
| Output peak power | 3000 Watt |
| Rated output power | 2800 Watt |
| Output current | 23.5A |
| AC voltage range | 80-160VAC |
| AC frequency range | 48-51Hz/58-61Hz |
| Power factor | >95% |
| Number of branch connections | 2PCS (Single) |
| Output efficiency | 99.5% |
| Static MPPT efficiency | 99.5% |
| Max output efficiency | 95% |
| Loss of power at night | <0.5W |
| Total current harmonics | <5% |
| Output parameters @230V | |
| Output peak power | 3000 Watt |
| Rated output power | 2800 Watt |
| Output current | 12.2A |
| AC voltage range | 180-280VAC |
| AC frequency range | 48-51Hz/58-61Hz |
| Power factor | >95% |
| Number of branch connections | 4PCS (Single) |
| Output efficiency | 99.5% |
| Static MPPT efficiency | 99.5% |
| Max output efficiency | 95% |
| Loss of power at night | <0.5W |
| Total current harmonics | <5% |
Appearance and Technical Features
- Temperature range: -40°C to +65°C
- Size (L×W×H): 370mm × 300mm × 41.6mm
- Net weight: 3.0kg
- Waterproof grade: IP65 NEMA3R
- Heat dissipation mode: Self-cooling
- Communication mode: 433MHz/WiFi
- Power transmission mode: Reverse transmission, Load priority
- Monitoring system: Mobile phone APP, Browser
- Electromagnetic Detection: EN61000-6-1:2007, EN6100-6-3:2007+A1:2011+AC:2012
- Power Grid standard: EN50549-1, EN50549-2, NBR 16149:2013, UL1741
- Power grid detection: IEC/EN 62109-1, IEC/EN 62109-2, IEC 62116, IEEE 1547
- Certificate: CE, ETL, INMETRO, Patented technology
- Packing weight (Each): 4.36 KG (Box of 4PCS: 18.38KG)
- Packing size: 430×375×140mm (Box of 4PCS: 430×405×380mm)
System Diagram and Monitoring
System Diagram
The system diagram illustrates the connection of photovoltaic modules to the micro inverter. The micro inverter connects to a WiFi Modem, which then communicates with the KDM Cloud Server. This setup allows for monitoring via a mobile phone app or computer.
Components shown: Photovoltaic module, Micro inverter, WiFi Modem, KDM Cloud Server, WiFi Router, Computer, APP Control, Switch, Meter, Power Grid.
Description of the Connector and Cable Core of the Micro Inverter
The micro inverter features a 3-pin AC output connector. The pins are designated as:
- PIN 1: L (Live wire) - Brown wire
- PIN 2: N (Neutral) - Blue wire
- PIN 3: G (Ground) - Yellow-green wire
Note: A professionally customized AC bus with a T-type connector can be used for branch wiring systems.
LED Indicator Function of Micro Inverter
The micro-inverter has an LED indicator to show its operational status:
- Red light on: Micro-inverter is powered on and ready.
- Red light flashing: Micro-inverter is prepared and entering a delayed startup state.
- Flashing green: Searching for Maximum Power Point (MPPT).
- Green light on: MPPT locked state.
- Green light turns red: Indicates protection modes such as islanding, frequency, AC over/under-voltage, DC over/under-voltage, fault, or software shutdown.
Normal working indicator process: Upon connecting AC and DC power, the indicator sequence is: Red light on (3s) → Red light flashing (30s) → Flashing green (MPPT search) → Green light on (MPPT lock).
Installation Guide
Appearance Description of Micro Inverter
The micro inverter has DC input terminals (positive and negative) for connecting to PV modules, an AC output terminal for connecting to the AC main cable or next inverter, an independent ground connection point, a status indicator LED, and an antenna. It also features fixing holes for mounting.
Preparation Before Installation
- Install Kaideng micro inverter series products as shown in the figures.
- Only qualified personnel should install or replace Kaideng micro-inverters.
- Read all instructions, technical details, and warning marks before installation or use.
- Plan AC branch circuits to ensure they do not exceed current limits, allocating the maximum number of micro-inverters per branch.
- Implement all national and local electrical codes (e.g., NEC, ANSI/NFPA 70).
- Do not attempt to repair the micro-inverter; it contains no user-serviceable parts. Contact Kaideng customer service for assistance. Tampering voids the warranty.
- Ensure AC power is disconnected before installation. Do not install with power on.
- After power station installation, install a ground wire on the photovoltaic support. Install lightning protection and/or surge suppression equipment in the AC junction box. A switch device for lightning/surge protection is crucial.
- When installing the inverter handshake cable, plan branch circuits to manage current limits and allocate micro-inverters per branch.
- Ensure the current of each channel at the branch circuit does not exceed 40 Amp to avoid unsafe factors.
- Check for necessary related equipment: AC junction box, screwdriver, wire cutter, voltmeter, torque wrench, socket, and wrenches.
Note: The number of micro-inverters per branch may vary by region. Refer to local requirements.
Inverter Model and Maximum Number of Micro-Inverters Per Branch
| Inverter Model | Number of Branches |
|---|---|
| WVC-295 | 30PCS |
| WVC-300 | 30PCS |
| WVC-350 | 25PCS |
| WVC-600 | 15PCS |
| WVC-700 | 12PCS |
| WVC-1000 | 10PCS |
| WVC-1200 | 8PCS |
| WVC-1400 | 6PCS |
| WVC-1600 | 5PCS |
| WVC-2000 | 5PCS |
| WVC-2400 | 3PCS |
| WVC-2800 | 3PCS |
Inverter Installation Steps
- Install the inverter on the photovoltaic panel bracket using the provided screws.
- Connect the positive and negative poles of the DC connection MC4 plug from the photovoltaic board to the DC input terminal of the inverter.
- Open the waterproof cover of the AC output connector and connect the AC cable to the AC waterproof plug.
- Connect the AC output cable to the AC main cable.
- Repeat steps 1-3 for all inverters.
- Connect the AC main cable to the utility grid to begin operation.
Note: Always follow safety symbols and instructions in this manual for safe installation and operation.
Wiring Diagram WVC-2800 Triple Phase
The diagram shows a triple-phase wiring configuration for the WVC-2800. It illustrates multiple PV arrays, each connected to an inverter. The inverters' AC outputs are then connected to a common AC main cable, which is then connected to the grid via L1, L2, L3, N, and Ground connections. Each array branch has a maximum of 3 micro-inverters.
Wire connections for AC output:
- L1 (Live): Brown wire
- N (Neutral): Blue wire
- G (Ground): Yellow-green wire
For triple-phase connections, L2 and L3 also use brown wires, N uses blue, and G uses yellow-green.
Monitoring System Setup
Distribution Network Preparation Tool
To install the KDM monitoring system, first configure the KDM monitoring system by downloading and installing the MxEasyLink network distribution tool. Use the provided QR code or URL for download. (iOS system download password: Mxchip).
Monitoring System Distribution Network Instructions
Network Configuration Process:
- Press the reset button on the collector until the indicator light flashes quickly.
- Operate within the mobile phone's MxEasyLink interface.
- Once network configuration is complete, the 'Ready' and 'Link' lights on the collector will become solid.
Android Client Configuration
- Connect your mobile phone to your home wireless network.
- Open the MxEasyLink client.
- Fill in the wireless SSID and password.
- When the collector is in the quick flashing state (indicator light), click the 'Send Command' button.
- The system will automatically configure the network and confirm successful data string reception.
iOS Client Configuration
- Open the MxEasyLink client.
- Click "+" in the upper right corner to create network configuration settings.
- Fill in the SSID and password, and select the mode as "EasyLink AWS".
- When the collector flashes quickly, click "Start EasyLink AWS Mode".
- Upon receiving module data, click "Confirm" to complete network configuration.
KDM Monitoring System Setup
Ready to Work: Install the "KDM Monitoring System" tool on your Android Phone. For iPhones, use the browser and log in to: kdm.kaidengdg.com.
Create Account: Open the KDM software, click 'Register', create your KDM account, and save the details.
Add Station: After logging in, click "Add Station". Fill in the required information, including the 8-digit code from the back of the WiFi Modem. For the electrical box option, select "None" and fill in "1".
Add Inverter: Once the power station is created, the interface will jump to adding an inverter. Ensure the inverter is installed correctly. Fill in the 8-digit ID from the inverter and click "Add". After addition, you can query the inverter's working status and view the power station's operating status.
Wi-Fi Modem Working Mode: The Wi-Fi modem's working mode can be changed by pressing and holding the reset button:
- TCP/IP mode: Release the 'Ready' indicator from "off → on → off".
- Internet of Things mode: Release the 'Ready' indicator from "off → on".
