/ANSI C37.20.3
LR1705R is a relay, as defined in IEE/ANSI C37.20.3, that is designed, manufactured, and tested to meet the requirements of the standard. It is a multi-function, two-pole, time-delayed, inverse time overcurrent relay. It is capable of detecting various types of overcurrent conditions, such as phase-to-phase or phase-to-ground faults, as well as balanced/unbalanced system faults. The LR1705R is typically used for current measuring, overcurrent protection, and coordination between other protective devices. It also includes several advanced features that can help protect the power system from various faults or events.