Minilec 3 PH-4W System Phase Failure Relay D2VMR2
http://www.minilecgroup.com/products/d2-vmr2/
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Suitable for 3 Ph-4W system, Microcontroller design, Absolute values of UV/OV settings, Phase Failure, Unbalance, Phase Sequence, Under voltage, Over Voltage, Auto/Manual reset, Adjustable settings for Unbalance, UV/OV and trip delays, 2 CO output relay.
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