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VMU-S String Measurement Unit
Variables measuring unit with built-in protection fuseholder (the fuse is not provided); particularly indicated for DC current, voltage, power and energy metering in PV solar applications. The current inputs/outputs and also the voltage inputs are made so to simplify the string common connections. Direct connection up to 16A or 30A depending on the model.
Moreover the unit is provided with an auxiliary serial communication bus. Alarms, fuse blow detection, PV module connection and serial communication are managed by means of VMU-M module. Housing for DIN-rail mounting, IP40 (front) protection degree.
Features
• Direct DC voltage measurement up to 1000V
• Energy measurements: kWh
• Direct DC current measurement up to 16A or up to 30A without fuse
• Instantaneous variables data format: 4 DGTs
• Energies data format: 6 DGT
• Instantaneous variables: V, A, W.
• Accuracy: Class 1 (kWh) ±0.5 RDG (current/voltage)
• Auxiliary power supply from VMU-M unit
• String alarm management by means of VMU-M unit only
• Fuse blow detection by means of VMU-M unit only
• PV module connection control by means of VMU-M unit only
• Integrated 10.3x38mm fuse holder for string protection
• Dimensions: 1-DIN module
• Protection degree (front): IP40
