China Suppliers Factory: SMC Fiberglass Photovoltaic Grid-connected Boxes for Efficient Solar Energy Management
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.
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.
- SMC material is lightweight, reduces bracket load and simplifies high-altitude installation
- Fully sealed structure prevents moisture intrusion and avoids internal condensation
- Lifespan ＞30 years. Full life cycle cost is lower than metal box
- Modular design supports rapid expansion and component replacement
| 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 | Quantity |
|---|---|---|---|
| Incoming switch | Disconnector | CDGK 2P 100A | 1 |
| Outlet switch | Miniature circuit breakers | CDBKs C type 2P 63A dedicated to power grid | 2 |
| 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 | Quantity |
|---|---|---|---|
| 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 |
SMC (glass fiber reinforced unsaturated polyester resin) offers high insulation resistance (≥20MΩ), outstanding flame retardancy (UL94 V0 level), and lightweight structural properties. It provides superior resistance to UV aging, acid and alkali corrosion, and has a service lifespan of over 30 years, outperforming traditional metal boxes.
These boxes feature an IP65 protection rating and above. The fully sealed structure prevents dust and water intrusion, making them highly reliable for harsh outdoor environments, including heavy rain, sandstorms, and coastal salt sprays.
The boxes include built-in lightning protection modules (surge protectors), overcurrent protection devices, disconnectors, and miniature circuit breakers. These components safeguard the PV system against grid fluctuations, lightning surges, short circuits, and electrical fire hazards.
Yes, the SMC material and internal components are designed for stable operation across a wide temperature range from -40℃ up to +120℃ (with reliable performance up to +70℃ in high-temperature environments like deserts).
The TY-SXD2-GF1 is designed as a single-phase multi-meter photovoltaic grid-connected box, whereas the TY-SXS2-GF1 is configured as a three-phase multi-meter box. The three-phase model (SXS2) features higher-capacity components, including a surge protector and a small recloser to handle three-phase power requirements.