What are the communication equipment in these substations?
35 thousand volt station configuration is relatively low, relatively simple, with the yellow line that's optical fiber transceiver SDH, back with a bunch of various interfaces should be group access equipment PCM, what other switch ah, ah, what the fan wiring should read all know.
Substation communication equipment: no external wiring equipment, terminal equipment, access equipment, wiring equipment including ODF ODU, digital distribution unit DDU, unit VDU, audio wiring network terminal equipment supporting unit NDU, SDH, PCM and so on, switch access equipment
