• Advanced Microtech

Voltage Protection Devices

Advanced Microtech offers Voltage Protection Devices, m-VPD. Features: man-machine interface through keyboard and display; in-built single phase, unbalance, over voltage, under voltage, phase reverse protection; digital voltmeter with auto scanner (settable scroll time); more than mere annunciation, it displays the faulty condition at which tripping is occurred; software calibration facility; simple to install and through-wiring; and single source for turnkey automation. Salient features: 7-segment, 4-digit LED display for fault indication and digital voltmeter indicator; selection of phase voltage through advanced keyboard is used for main machine interface (MMI) with display; auto scanning of RY-YB-BR voltage with selectable scroll time feather touch keys to "set voltage" with digital display of set value; in-built fault annunciator display in addition to voltage protection; display resolution 0.1/0.2/1 V (up to maximum set value) for different ranges; software calibration facility for all three phase to phase voltages; all settings are stored in memories in case of power failures, backup time>10 years; in case fault occurs, (SPP, UB, O/V, etc) and power fails, fault conditions are stored in the memory after power resolution, the power is not supplied to load unless fault is reset. For manual reset and after fixed time for auto reset; extra wide range for set over voltage 420 to 500 V, for set under voltage 320 to 410 V, for set unbalanced voltage 20 to 100 V; and keyboard setting for under voltage and over voltage (setting in voltage and not in percentage) with fault annunciation.