MRN3

Productomschrijving

Because of combination of three protection functions in one device the MRN3 is a very compact mains decoupling device. Compared to the standard used single devices it has a very good price/performance ratio.

Features
• Microprocessor technology with watchdog,
• effective analog low pass filter for suppressing harmonics when measuring frequency and vector surge,
• digital filtering of the measured values by using discrete Fourier analysis to suppress
• higher harmonics and d.c. components induced by faults or system operations,
• integrated functions for voltage, frequency and vector surge in one device as well as single voltage, frequency and vector surge devices,
• two parameter sets,
• voltage supervision each with two step under-/and overvoltage detection,
• frequency supervision with three step under-/or over frequency (user setting),
• completely independent time settings for voltage and frequency supervision,
• adjustable voltage threshold value for blocking frequency and vector surge measuring,
• display of all measuring values and setting parameters for normal operation as well as tripping via a alphanumerical display and LEDs,
• display of measuring values as primary quantities
• Storage of trip values and switching-off time (tCBFP) of 5 fault occurrences (fail-safe of voltage),
• recording of up to eight fault occurrences with time stamp
• for blocking the individual functions by the external blocking input, parameters can be set according to requirement,
• user configurable vector surge measurement 1-of-3 or 3-of-3,
• reliable vector surge measuring by exact calculation algorithm,
• suppression of indication after an activation (LED flash),
• free assignment for output relays,
• display of date and time,
• in compliance with VDE 0435, part 303 and IEC 255,
• serial data exchange via RS485 interface possible; alternatively with SEG Electronics RS485 Pro-Open Data Protocol or Modbus Protocol.