Numerical Inverse Time Over Voltage Relay : ADR212ASpecifications1 Phase inverse time over voltage Relay or under voltage protection. Programmable (Non- Volatile) Setting By local keys Back - lit LCD display for settings. Display of fault voltage / Load voltage. IDMT Curve. Equivalent VDG11 and VDG13 of EE make relay. Design using DSP technology. IDMT Curve equivalent to VDG14 of EE. Design using DSP technology. Latching of fault value. Pass-word protection for setting. With RS232 & 485 port.The ADR212A is a single element inverse time under or over voltage relay with timer suitable for capacitor bank protection, VT supervision etc.