DEP0034865DA - Device for lowering the start-up limit for direct current watt hour meters with iron in the current field - Google Patents

Description

Siemenp-Sohuckerti / verke Briangen, 21.2 * 49

Corporation

Device for reducing the start-up grenae in Gleiohütromwattstuaaensählern with Bisen in the stray field.

Bai Gleluhstroiwattstundanzählern with iron in Stromfölc ^first, especially those with an annular magnetisohen conclusion for this field _t is, as tests have shown, the Anlaufgrenge> d "h * those Zuluerlast in which the anchor is just starting running on au, relatively hooh . One could assume that this implication Auroh is due to the low initial poxmeability of iron in the current field, but Si ^ also occurs then> WQnn. Iron aorta with a relatively high initial exo-permeability can be used.

The invention is based on the knowledge that the high threshold limit is due to the presence of magnetic poles, which induce the armature ampere turns in the iron of the current field. that one can counteract a c.en anchor & rew indungen

Attaches compensation winding. Since the anchor is connected to voltage, this compensation winding is also connected to voltage and for example with the armature in series, similar to the known voltage auxiliary winding used for friction compensation. If the compensation winding is adjusted correctly, the start-up limit is significantly reduced »

Dia invention v / ill be explained with reference to the drawing, "A by 1, Fig. 1, indicated, by the voltage-fed armature in the air gap between an I-fb'rmigen, • a Stromwiöklung 2-carrying iron core 3 and an annular Rüoksohlussteil 4 arranged. The Anke ramp he ewindunge.n indu ~ decorate particular in the return ring 4 magnetic poles, deien priorities for 5 ^s awisohen the Stronipölen 6 lie. According to the invention, the formation of the poles 5 is suppressed by compensating coils 7, which counteract the armature and winding, thereby reducing the starting limit. Instead of what is indicated in FIG

G "■

Current pole centers adjacent points of the carbon fiber ring 4, Pig. 2, enclose and the hung-can at these points with appropriate ! flood 8 be provided »

Instead, as FIG. 3 shows, the ring 4 can also be divided at the middle of the current poles, at 9, and the interruption points can be bridged by iron brackets 10, which are provided by the compensation winding? are enclosed.

With the arrangement according to Pig. 4 and 5, the compensation winding V sits in slots 1Γ or bulges IS.des ring 4 on the

between ä & ü current poles G points. For holding Kompensationsepulen 7, these sites can / dos serve ring enclosing wire W indungen 13, the "a thorn electric field superimposed in a known manner, induce aur'Eöibungskoiaponsation serving Spannungshilfsfolä.

Claims (1)

5 claims 5 figures 1 ? at e η ta η a ρ r ü ehe » 1 · Device for reducing the start-up limit in the case of ß-leiohstromwatt-hour meters with iron in ötromf eld, marked üuroh oine the anchor amp © rev »indungen counteracting © Eornp © na a *» tion wioklang (7 ^ Pig. I to 5). 2, apparatus for counters with annular BisGurüokschluss for the current field by Anspruoh 1, characterized in that the compensation winding (7, Mg, 2) th Strompolmitten umsohliesst benaoh "· bart9 points of the ring (4), 3, device naoh ■ claims 1 and 2, characterized in that the ring (4 _? I ¹ Is, S) is interrupted at the studs (9) adjacent to the current pole centers and the gate bracing parts (9) are looped over by the compensation winding (7) Brackets (10) are bridged. 4, device for counters with an annular Sisenrüokaohluss for the current field according to spoke 1 _} thereby g (. 7 / 'J? i £ 4 and 5) in grooves (11 _# lig.4) or Ausbuohtungen (12, Hg ₁ O) of the ring (4) to between C.en. Strompoleii (6) located tunnel-sit " 5, Torrioiituiig according to claims 1 and 4, because the jKlompenJationswioIrlung Bopalon (7, l »'ig _% 5) for the iieil> ungskompönsation dionéo 35 wire windings (13) \ which surround the input (4), are held;