Determination of the constants of instrument transformers . 5 cycles. ^ ~ ~ \ 25 ^ ^ s \ k m- N \ Kl ~ r^ 42 24 is ^ ^ ^ rJit a. 2_ ~~ -J —\ — ?— 1 00 S SECONDARY AMPERES Fig. 24.—Ratio curves, current transfor t , i \ 25 SJ ^im ^ s It •\ N K^, ?*-K| ^ i <, ^ ^T-J ^ — L - £5 r. _ _ L ^ — SECONDARY AMPERES s angle curves, current transformer E. Agnew-~\Fitch. J Instrument Transformers. 299 rature. v^are must be taken that the deflection is in the properdirection, or the emf. may contain a resistance drop twice as greatas the reactance drop, as well as the reactance drop. The two wi

---

Determination of the constants of instrument transformers . 5 cycles. ^ ~ ~ \ 25 ^ ^ s \ k m- N \ Kl ~ r^ 42 24 is ^ ^ ^ rJit a. 2_ ~~ -J —\ — ?— 1 00 S SECONDARY AMPERES Fig. 24.—Ratio curves, current transfor t , i \ 25 SJ ^im ^ s It •\ N K^, ?*-K| ^ i <, ^ ^T-J ^ — L - £5 r. _ _ L ^ — SECONDARY AMPERES s angle curves, current transformer E. Agnew-~\Fitch. J Instrument Transformers. 299 rature. v^are must be taken that the deflection is in the properdirection, or the emf. may contain a resistance drop twice as greatas the reactance drop, as well as the reactance drop. The two willbe opposed so that the deflection may have the proper magnitude,but be in the wrong direction. One may make certain of havingthe correct connection by lagging the field current, when the deflec-tion should decrease.) Now, if the moving coil be connected tothe unknown shunt, the deflection measures the reactance , or the deflections are proportional to the inductances andare independent of the resistances. QUARTERPHASE DOWN. DYNAMOMETER TRANSFORMER

---

Size: 2547px × 981px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1900, bookiddete62812991909130130agne