??Abstract: This article introduces the application of “Acrel" DJSF1352-RN DC meter in the Russian UPS metering system. It is mainly used for the measurement of the output energy in the UPS system, and the measurement, communication and control of the circuit system through the Hall sensor.

1.項目概述：Project Overview

??該公司位于俄羅斯，是一家電池生產公司。主要在俄羅斯從事工業電池及UPS的生產和供應?？蛻粢褂弥绷麟姳?，用于UPS輸出端電能的監測計量。

??The company is located in Russia and is a battery production company. Mainly engaged in the production and supply of industrial batteries and UPS in Russia. The customer needs to use a DC meter for monitoring and measuring the electrical energy at the output of the UPS.

2.DJSF1352-RN介紹 DJSF1352-RN DC Energy Meters

DJSF1352-RN導軌式直流電能表，主要針對電信基站、直流充電樁、太陽能光伏等應用場合而設計，該系列儀表可測量直流系統中的電壓、電流、功率以及正反向電能等。在實際使用現場，即可計量總電能，又可計量規定時間段內的電能。檢測的結果既可用于本地顯示，又能與工控設備、計算機連接，組成測控系統。

??儀表可具有紅外通訊接口和RS-485通訊接口，同時支持Modbus-RTU協議和DLT645-97(07)協議；可帶繼電器警報輸出和開關量輸入功能；根據不同要求，通過儀表面板按鍵，對變比、警報、通訊進行設置；具有開關量事件記錄（Modbus協議）、編程和事件設置記錄（645協議）、數據瞬時和定時凍結功能（645協議）、電壓電流功率峰值、谷值記錄功能。

??DJSF1352-RN rail-mounted DC power meter designed for telecommunications base stations, DC charging piles, solar photovoltaic and other applications, this series of meters can measure the voltage, current, power and forward and reverse energy and so on in the DC system.The actual use of the site, you can measure the total power, but also measure the energy within a specified period of time. The test results can be used for local display, but also with industrial control equipment, computers to form a measurement and control system.

??The meter can have infrared communication interface and RS-485 communication interface, and supports Modbus-RTU protocol and DLT645-97 (07) protocol at the same time.The meter can have relay alarm output and digital input function;You can set the ratio, alarm, and communication through the meter panel keys according to different requirements.The meter can have event recording of switch (Modbus protocol), programming and event setting records (645 protocol), instantaneous and timing freeze function of data (645 protocol), maximum and minimum value recording function of voltage and current power.

3.型號及功能介紹 Type and Function Description

Note：when dual DC input（D）function is selected，if Hall current sensor input is used in current channel, a power supply module shall be provided to supply power to the second Hall sensor; if D function is not provided, the built-in power supply of electric meter can be used.

4.客戶要求 Customer Requirements

??客戶想計量UPS的實際輸出電能，來計算UPS儲能與耗能的轉化比，UPS輸入端用的是我們ADL系列的電表，輸出端用的是DJSF1352-RN直流電表，通過分流器采取電信號，達到輸出端測量的目的。

??The customer wants to measure the actual output power of the UPS to calculate the conversion ratio of UPS energy storage to energy consumption. The UPS input end uses our ADL series electric meter, the output end uses DJSF1352-RN DC meter, and the electrical signal is taken through the shunt in order to achieve the purpose of output measurement.

參考文獻 Bibliography

??1.Solutions For Enterprise Micro-grid System 2021.04