Current transformer Concordance
Current transformer
Section titled “Current transformer”Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.
189 hits
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59 sections
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Matched Aliases
Section titled “Matched Aliases”Current transformer, current-transformer
Source Distribution
Section titled “Source Distribution”| Source | Hits | Sections |
|---|---|---|
| Theory and Calculation of Alternating Current Phenomena | 46 | 8 |
| Theory and Calculation of Alternating Current Phenomena | 32 | 8 |
| Theoretical Elements of Electrical Engineering | 28 | 15 |
| Theory and Calculation of Electric Apparatus | 25 | 5 |
| Theory and Calculation of Alternating Current Phenomena | 21 | 5 |
| Radiation, Light and Illumination | 9 | 2 |
| Theory and Calculation of Transient Electric Phenomena and Oscillations | 7 | 3 |
| Theory and Calculation of Electric Circuits | 7 | 4 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 5 | 3 |
| Engineering Mathematics: A Series of Lectures Delivered at Union College | 3 | 2 |
| General Lectures on Electrical Engineering | 3 | 2 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 3 | 2 |
Section Hits
Section titled “Section Hits”Representative Source Snippets
Section titled “Representative Source Snippets”Chapter 12: Frequency Converter Or General Alternating Current Transformer - 20 hit(s)
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CHAPTER XII FREQUENCY CONVERTER OR GENERAL ALTERNATING- CURRENT TRANSFORMER 103. In general, an alternating-current transformer conafete of a magnetic circuit, interlinked with two electric circuits or sets of electric circuits, the primary circuit, in which power, sup- plied by the impressed voltage, is consumed, and the second ...Chapter 14: The Alternating-Current Transformer - 18 hit(s)
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CHAPTER XIV. THE ALTERNATING-CURRENT TRANSFORMER. 126. The simplest alternating-current apparatus is the transformer. It consists of a magnetic circuit interlinked with two electric circuits, a primary and a secondary. The primary circuit is excited by an impressed E.M.F., while in the secondary circu ...Chapter 15: The General Alternating-Current Transformer Or Frequency Converter - 18 hit(s)
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CHAPTER XV. THE GENERAL ALTERNATING-CURRENT TRANSFORMER OR FREQUENCY CONVERTER. 141. The simplest alternating-current apparatus is the alternating-current transformer. It consists of a magnetic- circuit, interlinked with two electric circuits or sets of electric circuits. The one, the primary circuit, is exc ...Chapter 17: The Alternating-Current Transformer - 16 hit(s)
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CHAPTER XVII THE ALTERNATING-CURRENT TRANSFORMER 141. The simplest alternating-current apparatus is the trans- former. It consists of a magnetic circuit interlinked with two electric circuits, a primary and a secondary. The primary circuit is excited by an impressed e.m.f., while in the secondary circu ...Chapter 14: The Osni!Raij Aiitebnatina-Cubbent Tbakbfobmsb - 13 hit(s)
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CHAPTER XIV. THE OSNI!RAIj AIiTEBNATINa-CUBBENT TBAKBFOBMSB. 131. The simplest alternating-current apparatus is the alternating-current transformer. It consists of a magnetic circuit, interlinked with two electric circuits or sets of electric circuits. The one, the primary circuit, is excited by an impressed E.M.F., while in the other, the secondary circuit, an E.M.F. is induced. Thus, in the primary ...Chapter 13: Ths Alternating^Cnrrent Traxsfobmer - 10 hit(s)
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... ux is E 1()» W'2.irNn To produce the magnetism, *, of the transformer, a M.M.F. of JF ampere-turns is required, which is determined by the shape and the magnetic characteristic of the iron, in the manner discussed in Chapter X. §119] ALTERNATING-CURRENT TRANSFORMER. 169 For instance, in the closed magnetic circuit transformer^ the maximum magnetic induction is (» = *, where 5 = the cross-section of magnetic circuit. 119. To induce a magnetic density, (B, a M.M.F. of 3C^ ampere-turns maximum is required, or, JC^ ...Lecture 8: Arc Lamps And Arc Lighting - 8 hit(s)
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... a sufficiently high steadying resistance, or, in alternating-current circuits, a steadying reactance. Arc lamps for use on constant-current circuits, that is, cir- cuits in which the current is kept constant by the source of power supply, as the constant-current transformer or the arc machine, require no steadying resistance or reactance. 152 RADIATION, LIGHT, AND ILLUMINATION. Where several lamps are operated in series on constant poten- tial mains, as two flame-carbon arcs in series in a 110-volt cir- cuit, or five enc ...Theory Section 13: Alternating-current Transformer - 6 hit(s)
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13. ALTERNATING-CURRENT TRANSFORMER 60. The alternating-current transformer consists of one mag- netic circuit interlinked with two electric circuits, the primary circuit which receives energy, and the secondary circuit which delivers energy. Let TI = resistance ...Chapter 4: Arc Rectification - 5 hit(s)
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... raphs. The constant-current mercury arc rectifier system, as used for the operation of constant direct-current arc circuits from an alternating constant potential supply of any frequency, is sketched diagrammatically in Fig. 60. It consists of a constant-current transformer with a tap C brought out from the middle of the secondary coil AB. The rectifier tube has two graphite anodes ARC RECTIFICATION 251 a, 6, and a mercury cathode c, and usually two auxiliary mercury anodes near the cathode c (not shown in diagram, Fi ...Apparatus Section 4: Alternating-current Transformer: Regulation - 4 hit(s)
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... of the transformer. Such "impedance curves" and "short-circuit loss curves" for the transformers in Figs. 154 and 155 are shown in Fig. 156. If the short-circuit loss is greater than the sum of primary and ALTERNA TING-CURRENT TRANSFORMER 287 secondary izr losses, the difference represents load losses caused by eddy currents in the conductors, etc. * The reactance of the transformer is often given as percentage. Six per cent, reactance thus means that ...Apparatus Section 7: Induction Machines: Frequency Converter or General Alternating-current Transformer - 3 hit(s)
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VH. Frequency Converter or General Alternating-current Transformer 159. The e.m.fs. generated in the secondary of the induction machine are of the frequency of slip, that is, synchronism minus speed, thus of lower frequency than the impressed e.m.f. in the range from standstill to double ...Chapter 16: Induction Motor - 3 hit(s)
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CHAPTER XVI. INDUCTION MOTOR. 151. A specialization of the general alternating-current transformer is the induction motor. It differs from the stationary alternating-current transformer, which is also a specialization of the general transformer, in so far as in the stationary transformer only the transfer of electrical energy from primary to secondary ...Chapter 14: Constant-Potential Constant-Current Trans Formation - 3 hit(s)
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... es inductive reactance with the load is usually accomplished automatically by the mechanical motion caused by the mechanical force exerted by the magnetic field of the current, upon the conductor in which the ciurent exists. For instance, in the constant-current transformer, as shown diagrammatically in Fig. 114, the secondary coils, S, are arranged so that they can move away from the primary coils, P, or in- versely. Primary and secondary currents are proportional to each other, as in any transformer, and the magnetic field ...Lecture 5: Single-Energy Tra.Nsient Of Ironclad Circuit - 2 hit(s)
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... not constant, but varies w^ith the current, or the capacity is not constant, but varies with the voltage. The most important case is that of the ironclad magnetic cir- cuit, as it exists in one of the most important electrical apparatus, the alternating-current transformer. If the iron magnetic circuit contains an air gap of sufficient length, the magnetizing force con- sumed in the iron, below magnetic saturation, is small compared with that consumed in the air gap, and the magnetic flux, therefore, is proportional to the ...Lecture 4: Single-Energy Transients In Alternating Current Circuits - 2 hit(s)
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... uency tran- sient pulsation of the rotating magnetic field of armature reaction. Interesting in this oscillogram is the irregular initial decrease of the armature current and the sudden change of its wave shape, which is the result of the transient of the current transformer, through which the armature current was recorded. On the true armature- current transient superposes the starting transient of the current transformer. Fig. 25 shows a single-phase short circuit of a quarter-phase alternator; the upper wave is the volta ...Lecture 5: Single-Energy Transient Of Ironclad Circuit - 2 hit(s)
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... s not constant, but varies with the current, or the capacity is not constant, but varies with the voltage. The most important case is that of the ironclad magnetic cir- cuit, as it exists in one of the most important electrical apparatus, the alternating-current transformer. If the iron magnetic circuit contains an air gap of sufficient length, the magnetizing force con- sumed in the iron, below magnetic saturation, is small compared with that consumed in the air gap, and the magnetic flux, therefore, is proportional to the ...Chapter 3: Trigonometric Series - 2 hit(s)
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... n^eo^ MAXIMA AND MINIMA, 173 This is an extreme, if is an extreme, hence, and nro y= \-rx dx x^ -^-*: that is, ^=\/-::r = 4 cells are connected in multiple, and -=^/ — = 20 cells in series. X \ro 115. Example 16, In an alternating-current transformer the loss of power is limited to 900 watts by the permissible temper- ature rise. The internal resistance of the transformer winding (primary, plus secondary reduced to the primary) is 2 ohms, and the core loss at 2000 volts impressed, is 400 watts, and v ...Lecture 17: Arc Lighting - 2 hit(s)
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... yet represent much power; and when supplying thousands of arc lamps a large number of small machine units are required, which are uneconomical in space, in attendance and in efficiency. The mercury arc rectifier in combination with the stationary constant current transformer enables us to derive the power from the alternating current con- stant potential supply system. 222 GENERAL LECTURES Constant alternating current is derived by a constant cur- rent transformer or constant current reactance. Diagram- matically, th ...