â·ÃÊͺ¶ÒÁÃÒ¤Ò PQ3450: 1200A 3-Phase Power Analyzer/Datalogger Datalogging Power Analyzer (up to 30,000 sets of measurements) PQ3450: 1200A 3-Phase Power Analyzer/Datalogger Datalogging Power Analyzer (up to 30,000 sets of measurements) Features: Large dot-matrix, sun-readable, numerical, backlit LCD with easy-to-use onscreen menu Full system analysis with up to 35 parameters: V (phase-to-phase), V (phase-to-ground) A (phase-to-ground) KW / KVA / KVAR / PF (phase) KW / KVA / KVAR / PF (system) KWH / KVAH / KVARH / PFH (system) Phase angle Optional 200A, 1200A Current Clamps or 3000A Flexible Current Probes Adjustable Current Transformer CT (1 to 600) and Potential Transformer PT (1 to 1000) ratio for high power distribution systems Log up to 30,000 reading on a removable SD memory card in Microsoft Excel® format Wide sampling rate range (2 seconds to 2 hours) Built-in Clock and Calendar For complete specs please download the product datasheet (not available for some accessories) Click to see explanation Click to see explanation Extech Power Analyzer PQ3450 à¤Ã×èͧÇÑ´¡ÓÅѧ俿éÒ à¤Ã×èͧÇÔà¤ÃÒÐËì¡ÓÅѧ俿éÒ