How is remote hard hand manipulation achieved?
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Experts, do you have any experience using hardwired controls over a distance of around 1.5 kilometers (with the site being 1.5 km away from the control room) to directly drive the relay at the site? Do I need to add anything to China League One? Also, with such a distance, how should the electric contact level gauge on the drum be handled?
Convert on-site IO to bus signals
The topic description by the original poster is quite professional; there are replies from those who have participated in the discussion, so please keep up with the exchanges promptly