Libratherm Digital Voltage scanner model LVS-3, designed to monitor the incoming 3 phase AC supply voltage. It displays the AC voltage across 2 phases (like RY, YB & BR) sequentially at regular interval of time. LVS-3 also monitors one of the phase failures and phase reversal condition, under voltage and over voltage condition compared to the factory set values. The respective status is indicated on the front panel LEDs. In case of any of the abnormalities in the supply voltage a relay output is provided to indicate the false conditions.
Under normal operation the relay will remain energized and under faulty condition the relay de-energizes. The relay contacts (rated for 5A @ 230VAC) can be used to trip the external load or contactor operating on 3-phase AC supply. LVS-3 is a useful instrument to protect the 3 phase loads like AC motors and it is widely used by the electrical panel builders. LVS-3 is rugged, reliable and field proven and is available in 14 DIN size of (96 x 96 x 120) mm.
Application

Libratherm Digital Voltage scanner model LVS-3, designed to monitor the incoming 3 phase AC supply voltage. It displays the AC voltage across 2 phases (like RY, YB & BR) sequentially at regular interval of time. LVS-3 also monitors one of the phase failures and phase reversal condition, under voltage and over voltage condition compared to the factory set values. The respective status is indicated on the front panel LEDs. In case of any of the abnormalities in the supply voltage a relay output is provided to indicate the false conditions.
Under normal operation the relay will remain energized and under faulty condition the relay de-energizes. The relay contacts (rated for 5A @ 230VAC) can be used to trip the external load or contactor operating on 3-phase AC supply. LVS-3 is a useful instrument to protect the 3 phase loads like AC motors and it is widely used by the electrical panel builders. LVS-3 is rugged, reliable and field proven and is available in 14 DIN size of (96 x 96 x 120) mm.
Application