China SMC Fiberglass Photovoltaic Grid-connected Box - Reliable Suppliers and Factory for Solar Energy Solutions
Core Role
The DC power output by the centralized photovoltaic array is converted into AC power through the built-in inverter and then connected to the power grid or supplied to the load, thus achieving a stable connection between the photovoltaic power generation system and the power grid.
The use of SMC material (glass fiber reinforced unsaturated polyester resin) provides high insulation resistance (≥20MΩ) and excellent flame retardancy (UL94 V0 level), effectively isolating arc and short circuit risks and preventing electrical fires.
Built-in lightning protection module and overcurrent protection device can resist power grid fluctuations and lightning surge impacts to ensure the safety of equipment and personnel.
The box has an IP65 protection level and above, and the dustproof and waterproof sealing structure can resist heavy rain and sandstorms;
It is resistant to acid and alkali corrosion and UV aging (stable operation at -40℃~+120℃), and can adapt to harsh outdoor environments such as salt spray and industrial waste gas.
The integrated data acquisition module monitors power generation, voltage, current and other parameters in real time, supports remote fault diagnosis and reduces maintenance costs.
Core Application Areas
The inverter output side of the centralized ground power station, as a regional grid-connected node, needs to be matched with high-capacity electrical components and dust-proof and heat-dissipating design.
Industrial plant/commercial building rooftop power station: the corrosion-resistant box adapts to the industrial exhaust gas environment, and the explosion-proof design meets the requirements of high-risk places such as chemical industry;
Agricultural-photovoltaic complementary project: The moisture- and heat-resistant structure is suitable for installation on the top of agricultural greenhouses and is compatible with irrigation water vapor environments.
Offshore platforms and island microgrids: Anti-salt spray corrosion performance ensures long-term operation in humid and high-salt air.
Desert/plateau power stations: Anti-sand sealing and wide temperature range adaptability (such as -40℃ extreme cold or +70℃ high temperature) ensure equipment reliability.
Technical Advantages
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SMC material is lightweight, reduces bracket load and simplifies high-altitude installation
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Fully sealed structure prevents moisture intrusion and avoids internal condensation
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Lifespan ＞30 years Full life cycle cost is lower than metal box
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Modular design supports rapid expansion and component replacement
Model Specifications & Configurations
TY-SXD2-GF1 Model
| TY | SX | D2 | GF1 |
|---|---|---|---|
| Company Code | SMC non-metallic metering box | Single-phase multi-meter meter box | Photovoltaic grid-connected box |
| Configuration | Name | Component Model | Qty |
|---|---|---|---|
| Incoming switch | Disconnector | CDGK 2P 100A | 1 |
| Outlet switch | Miniature circuit breakers | CDBKs C type 2P 63A dedicated to power grid | 2 |
TY-SXS2-GF1 Model
| TY | SX | S2 | GF1 |
|---|---|---|---|
| Company Code | SMC non-metallic metering box | Three-phase multi-meter meter box | Photovoltaic grid-connected box |
| Configuration | Name | Component Model | Qty |
|---|---|---|---|
| Incoming switch | Disconnector | HK1N-100/4F | 2 |
| breaker | Small recloser | CDBNE-100GQF 4P C type 63A | 1 |
| breaker | Miniature circuit breakers | CDBK C type 4P 32A | 2 |
| surge | Surge protector | CDYN-Ⅱ40kA 4P 385V | 1 |
Frequently Asked Questions (FAQ)
A1: It acts as a power confluence and transmission center, converting DC power output from centralized PV arrays into AC power via inverters, establishing a stable connection to the power grid, and providing electrical safety protection.
A2: SMC (glass fiber reinforced unsaturated polyester resin) provides high insulation resistance (≥20MΩ) and UL94 V0 flame retardancy. It effectively isolates electrical arcs, prevents short circuit risks, is lightweight, and resists corrosion and UV aging.
A3: The box features an IP65 protection rating, making it highly dustproof and waterproof. It operates stably within a wide temperature range of -40℃ to +120℃, making it suitable for deserts, high altitudes, and heavy rain environments.
A4: The TY-SXD2-GF1 is designed for single-phase multi-meter systems, utilizing components like the CDGK 2P 100A disconnector. The TY-SXS2-GF1 is designed for three-phase multi-meter systems and includes additional surge protectors (CDYN-Ⅱ40kA) and small reclosers.
A5: Yes, the system includes an integrated data acquisition module that monitors parameters such as power generation, voltage, and current in real time, supporting remote fault diagnosis and reducing manual maintenance costs.
A6: Thanks to the anti-aging and anti-corrosive properties of the SMC material, these boxes have a lifespan of over 30 years, resulting in a lower full life-cycle cost compared to traditional metal boxes.