Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 150
ively to dis-connect the defective line only, but installations with only two CURRENT AND PRESSURE LIMITING DEVICES 1,669 outgoing lines in parallel have the same load conditions in both lines and selective tripping of the circuit breakers in the defective ine is obtained by means of a selective… … ^ig. 2,340.—General Electric direct current, reverse current relay, used to protect dynamos,storage batteries, or main station busses from damage on reversal of current due to shortcircuits or from the grounding of mack ne or connections. It is mounted on vertical busbars as in the case of cables,…
Electrical engineering
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