Investigation of inverse time limit overload relays (1915)
Deiss, William Charles · leaf 34
n figure (9), afford the proper protection. For a three-phase system with grounded neutral it is nec-essary to have three relays, connected as in figure (10). In all of these connections, we see that a direct currenttripping circuit is required to energize the tripping coil ofthe circuit breaker.… … Fig. 9. Fig. 10. (14) IV-DESCRIPTION AND CHARACTERISTICS OF DIFFERENT RELAYS.The three types of relays named in Chapter II, namely, thebellows type, the magnetic damping or induction type, and therepulsion motor type are manafactured and marketed by the GeneralElectric Co., the Westinghouse…
Short circuits · Electric apparatus and appliances · Electric conduits · Theses
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