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Metal to Carbon Relays are used in railway signaling on Indian Railways for operating various signaling functions viz. signals / points / track which make and break as per the signaling logic and operate the signaling equipment. The reliability of these relays is very poor and its major reason is High Contact Resistan operations and adversely affects the… (More)
Metal to Carbon Relays are used in railway signaling for operating various signaling functions viz. signals/points/track circuits etc. These relays consist of a metal (Silver) contact and a Carbon (Silver Impregnated Graphite) contact, which make and break as per the signaling logic and switch on the current to the signaling equipment. The reliability of… (More)