老快3下载安装 www.sthfyl.com.cn 產品簡介
Energy metering box is to ensure accurate and reliable energy metering, maintenance of power supply sector and the economic benefits of both units of the special measuring equipment. Products meet the relevant provisions of GB16934 and power sector requirements. Metering box for indoor three-phase AC 50Hz, rated voltage 380v / 220v, rated current of 25-630A the implementation of the rate of assessment and do not implement the power rate assessment of low-voltage power supply or high for the user's energy metering. In this case, Metering box is to measure the electrical energy necessary for measuring instruments and auxiliary equipment in the overall, including the energy meter, metering voltage, current transformer and its secondary circuit, energy metering box.
Use of the Environment
海拔高度：<1000m 環境溫度：-10~+45℃，極限工作溫度范圍：-15~+55℃ 相對濕度：+20℃時，不應高于90%；+45℃時，不應高于50% 防護等級：戶外不低于IP34D戶內不低于IP20 額定電壓：500v以下 額定電流：單相或三相直接入式每戶負荷電流不大于40a 額定邊緣電壓：660v 頻率：50hz 接地方式：TT.TN
Altitude: <1000m Ambient temperature: -10 ~ +45 ℃, limit the working temperature range: -15 ~ +55 ℃ Relative humidity: +20 ℃, should not be higher than 90%; +45 ℃, should not be higher than 50% Protection class: outdoor IP34D not less than IP20 indoor Rated voltage: 500v or less Rated current: single-phase or three-phase direct-load current per household is not greater than 40a Rated edge voltage: 660v Frequency: 50hz Ground: TT.TN
Metering box can be suspended or floor-mounted. To ensure the quality of the installation, hanging box must be built-in expansion bolts, bolt size to meet the security requirements of solid and outdoor installation conditions.
Equipment Arrangements Within the Metering Box
Direct access must be set into the line switch room, metering room and the emergence of the switch room; access to the transformer must be set up line switch room, transformer room, measuring room and the emergence of switch room. The functional areas are separated. Energy meter, power information collection terminal should be installed in the fixed fixture, mounting bracket or grid. The horizontal distance between the electric energy meter and the electric energy meter is not less than 30mm, the vertical distance is not less than 80mm. Test junction box, power meter, power information collection terminal and the distance between the shell of not less than 60mm. The distance between the front of the energy meter and the observation window should be between 15-20mm.