Daystar户外多通道IV测试系统Multi-Tracer设备特点 Daystar Multi-Tracer Characteristics * Offers a complete solution for long-term testing of PV modules. 为PV组件长期户外测试提供了完整的解决方案。 * Reliable, accurate, low maintenance requirements - Daystar has been selling Multi-Tracers for 10 years. Daystar销售多通道户外IV测试仪已超过10年，实际案例证明了Daystar 多通道Multi-Tracer产品稳定、低维修率。笔者注：美国Daystar公司专注户外IV测试设备的研究开发超过23年，他们*早开发单通道户外IV测试仪DS-100C，他们20多年来只做户外IV测试设备。 * Individual control of up to 16 PV modules (expandable). 单台控制器可同时控制16个组件，并可根据客户要求对通道数进行扩展，如32通道户外IV测试仪。 * Peak power tracking or constant voltage operation; IV curves at scheduled intervals. 可实现对工作PV组件的大功率点的追踪测试，或者在恒压工作模式下，按照设计的自动测试间隔要求对IV曲线进行测量绘制。 * Can measure positive grounded, negative grounded, or floating PV sources. 可以测试正极接地、负极接地，或者浮动光伏系统的IV测量。 * Two-decade Current Ranges, accuracy ~0.2% 20个可选测量电流档位，精度达~0.2% * Three-decade voltage ranges, accuracy ~0.2%. 30个可选测量电压档位，精度达~0.2% * 3200 Watt and 2400 Watt units available (expandable). 功率测试范围分别为3200W和2400W两档，也可按客户要求进行扩充。 * Base Multi-Tracer includes 24 thermocouple inputs, Type T standard. Multi-Tracer的热电偶输入端口基本配置为24个，T型。 * 4-Wire Kelvin load PV connection to measure voltage. 四线开尔文方式测电压 * On-board data storage. FTP file transfer. 现场数据存储，FTP文件格式传输 * Universal AC power 85/264 Vac, 50/60Hz. 可使用常规的交流电源85/264 Vac, 50/60Hz * Operated on Ethernet local area network. 可通过当地的因特网进行远程操作 * Base Multi-Tracer has 8 analog voltage inputs; auto-scaling 4 decades to ±5 Volts. Multi-Tracer有8个电压接入端口， * Voltage, current, irradiance and temperature are saved for each module. 可完成对每个PV组件电压、电流、辐照度和温度进行测量，并对数据进行保存。 Daystar Multi-Tracer Software Capabilities * User communications through Firefox browser. 用户可通过火狐浏览器进行通讯。 * Extensive Help Menu 强大的帮助菜单功能，帮助客户快速掌握设备的操作。 * Data files retrieved with FTP client software. 数据文件可通过FTP软件实现 * Daily MTD data file with averaged data for each module plus weather data. Daily MTD文件可自动对每个组件每天的数据进行一个平均，再加上天气数据。 * IV curves data file in XML format. IV曲线的数据以XML的格式进行存储 * Data analysis including IV curve normalization with IVPC software. 通过IVPC数据分析软件，可对IV数据及曲线进行标准化处理，将现场测试数据转换为标准状态（STC）下的测试数据，转换参照的方法有三种标准供选择，如Approximation, ASTM-E1036-93, or ASTM-E1036-96.保证了转换结果的正确性。
Multi-Tracer Software 操作体验
Daystar MT5 Multi-Tracers are designed to be integrated into any Ethernet network. Common browser software such as Firefox may be used to setup the Multi-Tracer and access data. Data files are collected using ftp software. All data collection routines, timing, averaging, and storing data, are "on-board" the unit which will retain several weeks of collected data depending on the averaging and number of IV curves specified by the user. However, we recommend data be collected periodically (daily) and stored/backed up for security. A example of the Multi-Tracer browser interface is available here
A separate file is created for each days data. Averaged values for all channel and auxiliary input data are stored in this file. Users may view the data from any computer having access privileges to the network.