ASR-411 digital main transformer integrated monitoring and control devices as a complement of the transformer primary protection and backup protection functions, mainly to achieve telemetry, remote signaling, remote control and remote adjustment function. Main functions: a) device with measuring current, voltage, frequency and analog telemetry functions; b) acquisition of a circuit breaker, energy storage, isolation switch, distant position signal and switch signal telesignalling ╱ place, etc.; c) Sub-breaker and the remote storage function; d) OLTC.