Numerical Neutral Displacement Protection Relay : ADR212ESpecifications1 Phase Neutral Displacement Relay. Programmable (Non- Volatile) Setting By local keys. Display of fault voltage / Load voltage. Back - lit LCD display for settings. Voltage Sensing Setting Range – 5V to 20V. in steps of 0.5V. IDMT Curve equivalent to VDG14 of EE. Design using DSP technology. Latching of fault value. Pass-word protection for setting. RS232C and RS485 communication port.The ADR212E is a single phase neutral voltage displacement relay with timer suitable for capacitor bank protection, VT supervision etc.