BG99778A - Stepping regulator selector, predominantly with complete insulation between the phases - Google Patents

Abstract

The selector is used to selectively select and link deviations from regulating coil of an adjustable under load power transformer, primarily connected in a triangle. It has a basic oil isolation between the phases, resulting in it reduce the gauges, especially when requiring complete isolation between the phases. At the same time its design is simple, light and stable. The selector is composed of stacked insulating rings on which, linearly on the circumference of two phase stages are arranged even and odd fixed contact elements. The insulating rings are mounted on three vertical insulating columns the edges are connected to the upper and lower shields. Elevated in the center of the selector current-carrying rings fastened by current radial bearers to the insulating ones columns. In another option, select the even and odd fixed contact elements of each phase are zigzagged on a single ring with the help of ears or additional insulating noses attached to it. The insulating cage can also be applied to selected ones where the current conduction current rings are made by conductors passing axially through a central tube.

Description

The invention relates to cellars. .. handsome for alternately linking the acting

ATOP, PLEASANTLY FULL: ASY h of the foot controller, fronted in a triangle with adjustable gud

Known is the chosen for step:

in a cylindrical cage, insulation columns connected at both ends is a forest: a piece and a bottom shield. Each insulation column consists of two insulating rails, between which are evenly mounted one even and one odd fixed contact element on the basement. the center of the selection is located current-collecting fingers.; :::, which are secured to insulating columns by radial currents; elements.

The disadvantage of this voter with the topic of height is because .. the bottom strength is superficial. .. the rivers are relatively low.

This is especially true for voters with complete phase isolation

disadvantages are the high consumption of insulation material and the relatively low mechanical resistance.

A step regulator selector (2) is also known, comprising an insulating cylinder fixed between the upper shield and the lower shield, on which even and odd fixed contact elements are mounted on the floor. 'The guide rings are connected via D-beams to the insulation cylinder.

The disadvantage of this voter is the significantly higher consumption of insulation material, which leads to increased mass and cost of the product.

the disadvantage is that the insulation distances between adjacent fixed contact elements are on the surface of a solid dielectric, resulting in reduced electrical insulation parameters at identical dimensions.

It is an object of the invention to provide a selector for a step regulator that has a stable insulation casing with a simple and light construction and high electrical insulation parameters, especially when requiring complete phase isolation.

The task is cut with a selector of a step regulator containing an insulated cage fixed between the upper shield and the lower shield with • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

- 2 odd and even fixed contacts! elements and radial carriers of current-carrying rings, with odd and odd fixed contact elements mounted on floor-mounted insulation rings, which are secured to two or more insulating columns connected between the upper shield and the lower shield. rings.As a variant, even odd odd fixed contact elements .. for phase are zigzagged on an insulating sacha ring attached to isolaclon

Preferably, there may be an additional advantage; insulation noisolation ring.Roors and ducts can be formed on insulation rings and: columns.

and the step adjuster selves inventively-

here is that there is mainly oil insulation between the ointments, which provides a relatively small height, especially for step regulators with full phase isolation. The advantage is that the insulation rings and insulation columns are easily made of standard workpieces and are light and stable construction.

Exemplary embodiments of the step voltage selector according to the invention are shown in the accompanying figures, of which:

Figure 1 • Draws a longitudinal section through three '·' '? Η voters with linearly arranged ... ... iodine other fixed even and odd, .... contact elements.

Figure 2 is a cross-sectional view of the voter of Figure 1 according to AA.

Figure 3 is a portion of the voter cavity unfolding of Figures 1 and

Figure 4 is a cross-sectional view of a three-phase selector with a zigzag arrangement of the contact fixed elements.

Figure 5 is a cross-sectional view of the voter of Figure 4 in BB.

Figure δ is a portion of the voter's cage unfolding of Figures 4 and

The insulated rings 1 are fitted / Figures 1,2 and 3 / even 2 and odd 3 fixed contact elements of phases X, Y, Ζ. The insulation rings 1 are secured mainly by insulating screw connections 4 to three insulating columns 5, in in the case of longitudinal strips cut from a cylinder.In principle, the columns can be made of insulating rails, pipes, etc. For stability, the insulating columns 5 may have cylindrical grooves into which the insulating rings enter and be glued to them. number n ep.

two or four insulation columns may be used as contact points.

Insulation columns 5 are held at both ends by an upper shield

G idol quote 7. The current even 3 and odd 9 rings are arranged

· · · · · · · · · · · · · · · · ·

floor along the axis of the voter and through the current conductors. the radial supports 10 are fixed to the insulating columns 5, and in the case of complete phase isolation, each phase is displayed on a separate column. 9 with insulating shaft 13 driving even movable contact ~. or 14, fastened bilaterally and an insulating shaft 15, occupied, gripping the odd movable contacts. nodes 16.The shafts 13 and 15 are lagged through bearing assembly 17 k:. .al shield 7 and trigger a laugh. by a known interrupt mechanism ?. ' action 18 located in the upper center ... Insulation rings 1 are ins / cylinder of insulating cylinder, but alternatively they may be molded but extruded from insulating material.In this case, it is advisable to have ribs 19, especially in large number of them ?, important contact elements. The selector of figures 4,5 and 5 is analogous and? structure of the insulating casing of that of Figures 1,2 and 3, which is why the functionally identical elements are marked with the same positions. Basics: the difference is that the odd 2 and odd 3 fixed contact elements .: each phase is zigzagged on one ring 1.This

:.: is to be done with different constants:

- Fixed contact «.: D .. 2 and 3 are fixed .. on y. ·. ..

rings 1 (Fig.6, phase X). This is appropriate if the rings are made by casting or pressing.

-If the insulating rings 1 are cut from a cylinder, it is preferable to mount the fixed contact elements 2 and 3 to the rings 1 through additional insulating supports 20.

-For a variant with full phase isolation, a wider ring 21 may be used for each phase (FIG. 6, phase Y /), through which ducts may be made for extension and leakage paths. and on insulation columns 5.

The structural solutions according to the invention can also be applied in the case of known fastening of the current rings 8 and 9 through G-different bearers or in the removal of the insulated wires from the current rings to the power switch axially through a central tube. For single-phase selector, only one floor of the three-phase voters shown in the figures is used. A two-phase selector with complete phase isolation can also be implemented.

The action of the stepper selector is the following:

In the steady state / Figures 1 and 2 / the three even contact bridges 14 make a galvanic connection between one of the five even stills ·· ····

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Нини ни ни ни ни ни ни контакт ни ни ни 8 контакт 8 и 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8

In this way, in a certain way, the current passes from the working deviation of the un shown control coil of the power transformer through the elements 2,14,8,10 and 11 ro the closed contact node of the power switch.

The chain of the adjacent selected deviation of the regulating winding through the elements 3,1?, 9,10 and 12 is connected to the open nozzle node of the power actuator and through it

provides an opportunity when the insulating shaft 15 is overtaken by the odd movable contact lug 13 from the non-fixed gear unit with the intermittent de :: o? '.:;

tact element 3 with which the stellar joint contacts

The night switch then transmits current to the odd contact circuit and interrupts readings. All deviations from the transformer coil of the transformer can be connected in series.

The action of the voter in Figures 4 and 5 is the same.

Claims (1)

H. Step regulator selector comprising an insulating cage fixed between the upper shield and the lower shield with even and odd double-ended contact elements and radial carriers of current-carrying rings mounted, characterized in that the even / 2 / and odd / 3 / stills: ??:;. elements are mounted on the floor. Isolated insulating ring :. which are secured to connected not: · γ upper shield / b / and divided by two or more insulating columns.ι / 2- /. The step regulator isoir, sir... to claim 1, characterized in that the radial supports (10) of the guide rings (8.0) are attached to the insulating columns (0). H. Step controller regulator according to claims 1 and 2, characterized in that the even (2) and odd (3) fixed phase contact elements are arranged zigzagly on a single insulating ring (1), for which purpose additional insulating supports (20) attached to the insulating ring (1). '.Stepler selector according to evil claims 1,2 and 3, har ... with the insulation ..,. ..instructions (1,21) on the insulating columns (5), ribs (19) and channels (22) may be formed. Application: 6 figures. Literature: 1. A.S. No. 36787 -Bulgaria. - 2. Stepless regulator type R - Machine factory Rhine-