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Digital Energy  Protection & Control Specialized Protection / Control |
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MIVII Voltage/Frequency Relay The MIV II, a member of the M II Family of Relays, is a digital device that provides voltage and frequency protection for a wide range of applications at any voltage level. The MIV II can be ordered with one of the following options:
Use the MIV II also to protect electrical machines like transformers, generators or motors against restricted earth faults.  Configurable logic, curves, I/Os and LEDs Flash memory for field upgrades Two settings groups Password protection for local operation Automatic display of last fault information Three models available for voltage, frequency and combined protection Drawout case for easy maintenance AC/DC power supply Access via front panel keypad or communication links Diagnostic features event recording and analog/digital oscillography EnerVista software for setting & monitoring Isolated front RS232 serial port RS485 rear port  Voltage and/or frequency protection at any voltage in automatic transfer systems, generators, motors, lines and busbars  Three-phase over and undervoltage, ground overvoltage Voltage unbalance, over and underfrequency Circuit Breaker control (open/close) Configurable I/O 6 outputs, four configurable, plus trip and alarm;  24-event record Analog/digital oscillography 24 cycles at 8 samples per cycle Frequency and per-phase voltage Monitoring of the last 5 trips information from the display  2x16 character LCD display 6 LED indicators, 4 configurable in function and color EnerVista software for setting and monitoring Front RS232 and rear RS485 ports using ModBus® RTU protocol up to 19,200 bps
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