Circuit breaker Concordance
Circuit breaker
Section titled “Circuit breaker”Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.
8 hits
Total text matches across processed Steinmetz sections.
6 sources
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7 sections
Chapters, lectures, sections, or report divisions with matches.
Matched Aliases
Section titled “Matched Aliases”Circuit breaker, circuit-breaker
Source Distribution
Section titled “Source Distribution”| Source | Hits | Sections |
|---|---|---|
| General Lectures on Electrical Engineering | 2 | 2 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 2 | 1 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 1 | 1 |
| Theoretical Elements of Electrical Engineering | 1 | 1 |
| Theory and Calculation of Transient Electric Phenomena and Oscillations | 1 | 1 |
| Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co. | 1 | 1 |
Section Hits
Section titled “Section Hits”Representative Source Snippets
Section titled “Representative Source Snippets”Lecture 4: Single-Energy Transients In Alternating Current Circuits - 2 hit(s)
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... ort-circuit current should be zero; the armature cur- 50 ELECTRIC DISCHARGES, TrAT'^>S AND IMPULSES. rent wave, therefore, is s}^nmetrical, and the field current shows only the double-frequency pulsation. Only a few half -waves were recorded before the circuit breaker opened the short circuit. Fig. 27. — CD5128. — Symmetrical. Momentary Single-phase Short Circuit of Alternator. Oscillogram of Armature Current, Armature Voltage, and Field Current. (Circuit breaker opens.) Fig. 28. — cd656o. — Asymmetrical. Momentary ...Report Section 2: Recommendations - 1 hit(s)
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RECOMMENDATIONS From the investigation, the following recommendations appear to me justified: 1.) To reduce the liability of trouble, by carefully going over all the controlling devices, such as relays, current transformers, circuit breaker-operating mechanisms, etc., especially those at or near the gen- erating stations to ascertain whether they are in perfect condition and whether they are of the most reliable and safest type now available, and where necessary replace them or change them to th ...Lecture 4: Single-Energy Transients In Alternating Current Circuits - 1 hit(s)
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... re short-circuit current should be zero; the armature cur- 50 ELECTRIC DISCHARGES, WAVES AND IMPULSES. rent wave, therefore, is symmetrical, and the field current shows only the double-frequency pulsation. Only a few half-waves were recorded before the circuit breaker opened the short circuit. Fig. 27. — CD5128. — Symmetrical. Momentary Single-phase Short Circuit of Alternator. Oscillogram of Armature Current, Armature Voltage, and Field Current. Fig. 28. — CD6565. — Asymmetrical. Momentary Single-phase Short Circu ...Lecture 6: Higher Harmonics Of The Generator Wave - 1 hit(s)
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... r neutrals, to ground through a separate resistance for every generator and to choose this resistance so high as to limit the neutral current, but still low enough so that in case of a ground on one phase, enough current flows over the neutral to open the circuit breaker of the grounded phase. The use of a resistance in the generator neutral is very desirable also, since it eliminates the danger of a high frequency oscillation between line and ground through the generator reactance in the path of the third harmonic, by ...Lecture 7: High Frequency Oscillations And Surges - 1 hit(s)
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... is iggooo ~ 94000 second, and thus, during on^ second, 94,000 waves would pass, that is, the frequency is 94,000 cycles. Or, if a transmission line of 80 miles' length short circuits at one end, and then disconnects at the other end by the opening of the circuit breaker, in the oscillation pro- ducd thereby the circuit is one-half wave. As the length of the circuit is 2 X 80 = 160 miles — conductor and return conductor, — the half wave is 160 miles; the complete wave therefore is 2 X 160 = 320 miles long, and the duratio ...Apparatus Section 17: Synchronous Machines: Short-circuit Currents of Alternators - 1 hit(s)
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... d current at first large and small waves alternate, but the successive waves gradually be- come equal with the dying out of the full frequency term. In Figs. 75 and 76 the oscillogram is cut off by the open- ing of the circuit breaker. For further discussion, and the theoretical investigation of momentary short-circuit currents, see "Theory and Calculation of Transient Electric Phenomena and Oscillations," Part I, Chapters XI and XII. For further discussion ...Chapter 3: Mechanical Rectification - 1 hit(s)
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CHAPTER III. MECHANICAL RECTIFICATION. 9. If an alternating-current circuit is connected, by means of a synchronously operated circuit breaker or rectifier, with a second circuit in such a manner, that the connection between the two circuits is reversed at or near the moment when the alternating voltage passes zero, then in the second circuit current and voltage are more or less unidirectional, ...