乐清市东禾电气有限公司

产品概述  Overview

光伏并网箱是用于在用户场地附近建设的光伏电站，运行方式以用户侧自发自用、多余电量上网；为了限度的保护系统安全运行，逆变器与市电电网的安全协调，提高系统可靠性及电能计量而设计的光伏并网配电箱。该产品具有防护等级高，使用寿命长，安装操作方便等特点。其功能有隔离保护，过载保护、短路保护、浪涌接地保护、过欠压保护及恢复后重合、发电电能计量等。

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.

产品优势 Product advantages

▪金属箱体采用武钢生产的冷轧钢板或不锈钢板材料，箱体的防护等级达到IP54 以上，适用于户外安装

▪箱体采用上下层设计，顶层设计为箱体的帽檐，防止下雨有雨水进入箱体；中间层设计为光伏计量电表，通过透明的玻璃板可观察到电表上的各类数据，并在门锁上设计有封签接口；底层设计为控制及保护区域，方便维护人员维护检修

▪箱体的电网进线孔设计可从底部进线或侧边进线，侧边进线时安装IP66 防水接头，保证箱体的防护等级

▪箱体的逆变器进线孔设计在底部，方便现场直接接线，箱体内的隔离开关采用知名品牌，并具有断开明显的断点，设计容量为逆变器输出电流的1.5 倍以上

▪箱体内设计有光伏过欠压保护装置及电压恢复重合保护装置，该产品除了失压保护外，还可对电网电压不稳定进行保护

▪箱体设计有防雷浪涌保护，浪涌保护器的标准放电电流为40KA，在雷雨频发地区可选用更大的防雷浪涌保护器，放电电流可达100KA

▪箱体设计有过电流保护断路器，保证系统出现过载和短路时，断路器能可靠的分断

▪箱体内部的安装板可根据客户要求配置环氧树脂绝缘板，绝缘板的厚度至少5mm 以上

▪可根据客户要求配置防孤岛装置

▪ 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