1.Product Overview
The Low Voltage PV Grid-Connected Cabinet is a critical component in PV power generation systems, serving as the interface between PV inverters and the grid. It performs essential functions such as power distribution, protection, monitoring, and metering. With the rapid development of renewable energy worldwide, distributed PV systems have become a key part of the energy transition, making grid-connected cabinets indispensable for ensuring safe and stable operation.
Modern low-voltage PV grid-connected cabinets feature a modular design, integrating intelligent protection devices, metering instruments, and communication modules. They continuously monitor PV system performance, grid parameters, and equipment status. The cabinet is typically constructed from high-quality cold-rolled steel or stainless steel, offering excellent corrosion, dust, and water resistance for harsh outdoor environments. Internally, it uses renowned international brand components for long-term reliability.
Compliant with IEC and national standards, the product undergoes rigorous testing and certification to prevent hazards such as islanding effects and grid abnormalities. It also supports remote monitoring and data acquisition, enabling real-time system status tracking and improved maintenance efficiency.
2.Product Functions
1).Grid Connection Function
Provides a standard interface between PV inverters and the grid
Supports parallel connection of multiple inverters
Ensures smooth power transmission and distribution
2).Protection Functions
Over/Under Voltage Protection: Disconnects from the grid if voltage exceeds or falls below set thresholds
Over/Under Frequency Protection: Monitors grid frequency anomalies and triggers protective measures
Anti-Islanding Protection: Rapidly disconnects upon grid failure
Reverse Power Protection: Prevents reverse power flow hazards
Short-Circuit Protection: Circuit breakers for fault protection
Leakage Protection: Detects leakage current and initiates safety shutdown
3).Monitoring & Metering
Real-time measurement of voltage, current, power, and frequency
Tracks PV generation, grid export, and consumption
Logs fault events and historical data
4).Communication & Remote Control
Supports RS485/Modbus protocols
Optional Ethernet, 4G, or NB-IoT wireless modules
Integrates with SCADA systems and PV monitoring platforms
Allows remote parameter configuration and firmware updates
5).Safety Features
Mechanical interlocks to prevent misoperation
Visible disconnect indicators
Emergency stop button
Surge and lightning protection
3.Product Features
1).High Reliability
Premium electrical components (e.g., breakers, contactors from leading brands)
Multi-layer protection for safe operation under abnormal conditions
Rigorous factory testing (dielectric, functional, temperature rise tests)
Modular design for easy maintenance
2).Smart Monitoring
Embedded intelligent control unit for real-time data collection
Remote diagnostics and fault alerts to minimize on-site visits
Data logging for historical performance analysis
Compatible with third-party monitoring platforms
3).Enhanced Safety
Advanced anti-islanding protection meeting global grid standards
Multiple electrical isolation mechanisms
Foolproof design (mechanical interlocks, visible disconnects)
Surge and lightning protection for noise immunity
4).Flexible Configuration
Customizable capacity and grid connection types
Optional add-ons (metering, communication modules)
Multiple mounting options for diverse site conditions
Scalable for future expansions
5).Eco-Friendly
Energy-efficient design
RoHS-compliant materials
Long service life, reducing waste
High recyclability
6).User-Friendly
Intuitive HMI with clear status indicators
Simplified wiring for easy installation
Comprehensive documentation (manuals, datasheets)
Full after-sales support
