產品概述 Overview
光伏并網箱是用于在用戶場地附近建設的光伏電站，運行方式以用戶側自發(fā)自用、多余電量上網；為了限度的保護系統(tǒng)安全運行，逆變器與市電電網的安全協(xié)調，提高系統(tǒng)可靠性及電能計量而設計的光伏并網配電箱。該產品具有防護等級高，使用壽命長，安裝操作方便等特點。其功能有隔離保護，過載保護、短路保護、浪涌接地保護、過欠壓保護及恢復后重合、發(fā)電電能計量等。
Photovoltaic grid connection box is a photovoltaic power station built near the user's site, operating in a self use and excess electricity grid mode on the user's side; A photovoltaic grid connected distribution box designed to maximize the safe operation of the system, ensure the safe coordination between the inverter and the municipal power grid, improve system reliability and energy metering. This product has the characteristics of high protection level, long service life, and convenient installation and operation. Its functions include isolation protection, overload protection, short circuit protection, surge grounding protection, overvoltage and undervoltage protection, post recovery reclosing, and power generation energy metering.
產品優(yōu)勢 Product advantages
?金屬箱體采用武鋼生產的冷軋鋼板或不銹鋼板材料，箱體的防護等級達到IP54 以上，適用于戶外安裝
?箱體采用上下層設計，頂層設計為箱體的帽檐，防止下雨有雨水進入箱體；中間層設計為光伏計量電表，通過透明的玻璃板可觀察到電表上的各類數據，并在門鎖上設計有封簽接口；底層設計為控制及保護區(qū)域，方便維護人員維護檢修
?箱體的電網進線孔設計可從底部進線或側邊進線，側邊進線時安裝IP66 防水接頭，保證箱體的防護等級
?箱體的逆變器進線孔設計在底部，方便現場直接接線，箱體內的隔離開關采用知名品牌，并具有斷開明顯的斷點，設計容量為逆變器輸出電流的1.5 倍以上
?箱體內設計有光伏過欠壓保護裝置及電壓恢復重合保護裝置，該產品除了失壓保護外，還可對電網電壓不穩(wěn)定進行保護
?箱體設計有防雷浪涌保護，浪涌保護器的標準放電電流為40KA，在雷雨頻發(fā)地區(qū)可選用更大的防雷浪涌保護器，放電電流可達100KA
?箱體設計有過電流保護斷路器，保證系統(tǒng)出現過載和短路時，斷路器能可靠的分斷
?箱體內部的安裝板可根據客戶要求配置環(huán)氧樹脂絕緣板，絕緣板的厚度至少5mm 以上
?可根據客戶要求配置防孤島裝置
? All metal boxes are made of cold-rolled steel plates or stainless steel plates produced by Wuhan Iron and Steel Group. The protection level of the box reaches IP54 or above, making it suitable for outdoor installation
? The box adopts an upper and lower layer design, with the top layer designed as the brim of the box to prevent rainwater from entering the box during rain; The middle layer is designed as a photovoltaic metering meter, where various data on the meter can be observed through a transparent glass plate, and a sealing interface is designed on the door lock; The bottom layer is designed as a control and protection area for easy maintenance and repair by maintenance personnel
? The design of the power grid inlet hole of the box can be accessed from the bottom or side. When accessing the side, IP66 waterproof joints are installed to ensure the protection level of the box
? The inlet hole of the inverter in the box is designed at the bottom, making it convenient for direct on-site wiring. The isolation switch inside the box adopts a well-known brand and has obvious disconnection points. The designed capacity is more than 1.5 times the maximum output current of the inverter
? The box is designed with a photovoltaic overvoltage/undervoltage protection device and a voltage recovery/reclosing protection device. In addition to voltage loss protection, this product can also protect the unstable voltage of the power grid
? The box design is equipped with lightning surge protection. The standard maximum discharge current of the surge protector is 40KA. In areas with frequent thunderstorms, larger lightning surge protectors can be selected, with a maximum discharge current of up to 100KA
? The box design has an overcurrent protection circuit breaker to ensure reliable breaking of the circuit breaker in case of overload and short circuit in the system
? The installation plate inside the box can be equipped with epoxy resin insulation board according to customer requirements, with a thickness of at least 5mm or more
? Anti islanding devices can be configured according to customer requirements
