Chapter 26: Intebunkeid Foiiyfhase Systems
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theory and Calculation of Alternating Current Phenomena |
| Year | 1897 |
| Section ID | theory-calculation-alternating-current-phenomena-1897-chapter-26 |
| Location | lines 26028-26427 |
| Status | candidate |
| Word Count | 1580 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”CHAPTER XXVI. INTEBUNKEID FOIiYFHASE SYSTEMS. 249. In a polyphase system the different circuits of displaced phases, which constitute the system, may either be entirely separate and without electrical connection with each other, or they may be connected with each other electrically, so that a part of the electrical conductors are in common to the different phases, and in this case the system is called an interlinked polyphase system. Thus, for instance, the quarter-phase system will be called an independent system if the two E.M.Fs. in quadra- ture with each other are produced by two entirely separate coils of the same, or different but rigidly connected, arma- tures, and are connected to four wires which energize inde- pendent circuits in motors or other receiving devices. If the quarter-phase system is derived by connecting four equidistant pointsSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Impedance / reactance
Section titled “Impedance / reactance”... M.F. and ring current. In the generator of a symmetrical polyphase system, if : €* E are the E.M.Fs. between the ;/ terminals and the neutral point, or star E.M.Fs., $254] INTERLINKED POLYPHASE SYSTEMS, 373 /,• = the currents issuing from terminal i over a line of the impedance Z^ (including generator impedance in star connection), we have : Potential at end of line / : Difference of potential between terminals k and / : where /, is the star current of the system, Z, the star im- pedance. The ring potential at the end of the line between ter- ...Ether references
Section titled “Ether references”... atus into the system. {250] INTERLINKED POLYPHASE SYSTEMS. 369 1st. The star connection^ represented diagrammatically in Fig. 179. In this connection the n circuits excited by currents differ from each other by l/« of a period, and are connected with their one end together into a neutral point or common connection, which may either be grounded or connected with other corresponding neutral points, or insu- lated. In a three-phase system this connection is usually called a Y connection, from a similarity of its diagrammatical rep- resentation ...Alternating current
Section titled “Alternating current”CHAPTER XXVI. INTEBUNKEID FOIiYFHASE SYSTEMS. 249. In a polyphase system the different circuits of displaced phases, which constitute the system, may either be entirely separate and without electrical connection with each other, or they may be connected with each other electrically, so that a part of the electrical conductors are in common to the different phases, and in this case ...Waves / transmission lines
Section titled “Waves / transmission lines”... by a voltmeter con- nected between adjacent lines, in ring or delta connec- tion. In the same way the star or Y current is the current flowing from one line to a neutral point ; the ring or delta current, the current flowing from one line to the other. The current in the transmission line is always the star or Y current, and the potential difference between the line wires, the ring or delta potential. Since the star potential and the ring potential differ from each other, apparatus requiring different voltages can be connected into the same polyphase mains, ...Chapter-Local Concept Hits
Section titled “Chapter-Local Concept Hits”| Concept Candidate | Hits In Section | Status |
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| Ether | 2 | seeded |
Chapter-Local Glossary Hits
Section titled “Chapter-Local Glossary Hits”| Term Candidate | Hits In Section | Status |
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| ether | 2 | seeded |
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Figure Candidates
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Ether references: Verify exact wording before drawing conclusions. Ether language must be separated from later interpretive systems.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
- Waves / transmission lines: Map Steinmetz’s wave and line language onto modern distributed constants, propagation velocity, standing waves, and reflections.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Ether references: If Steinmetz mentions ether, quote only the verified source words first; any broader ether-field synthesis belongs in a labeled interpretive layer.
- Waves / transmission lines: Standing/traveling wave passages may support richer field interpretations; the page keeps those readings separate from verified Steinmetz wording.
Promotion Checklist
Section titled “Promotion Checklist”- Open the full source text and the scan or raw PDF.
- Verify the chapter boundary and surrounding context.
- Promote exact quotations only after checking the source image.
- Move mathematical candidates into canonical equation pages only after formula typography is corrected.
- Move diagram candidates into the diagram archive only after image extraction, crop verification, and manifest creation.
- Keep Steinmetz wording, modern translation, and ether-field interpretation in separate labeled layers.