Numerical UV/OV Protection Relay : ADR232ASpecifications3 Phase start connected, full under / over voltage protection.. Programmable (Non- Volatile) Setting By local keys Back - lit LCD display for settings. Display of fault voltage / Load voltage. Wide Under voltage range – 45% to 100% (100% = bypass under voltage element). Wide Over voltage range – 100% to 155% (100% = bypass over voltage element). Design using DSP technology. Latching of fault value. Pass-word protection for setting. RS232C and RS485 Communication port.The ADR232A is a communicable 3 phase under over voltage relay with timer suitable for capacitor bank protection , VT supervision etc.