English to Russian Tech/Engineering Energy / Power Generation steam turbine sprecs

Excitation regulator (AVR)
1) AVR is of two-channel digital type.
2) The regulation mode of AVR is P, PI and PID (optional).
3) There are 2 channels and each channel can trace automatically and be switched over without disturbance.
Each channel has complete functions and can work independently.
At the same time, it has manual excitation regulating unit, to manually trace the automatic tracing, with ***undisturbed switching.