单词 | pilot relaying |
释义 | pilot relaying [`pī·lǝt rē´lā·iŋ] ELECTRICITY A system for protecting transmission consisting of protective relays at line terminals and a communication channel between relays which is used by the relays to determine if a fault is within the protected line section, in which case all terminals are tripped simultaneously at high speed, or outside it, in which case tripping is blocked. |
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