DE1944341C3 - Tap changer for changing the transformation ratio of a transformer in the de-energized state - Google Patents

Description

the support strips together with the fixed contacts a rigid support unit on which the movable contacts are reliably guided. The: fixed Contacts can be arranged closely with any number of contacts in delta and star connections to

clock sets can be compiled, one of the assembly simple and reliable Klernrnverbindungen can be made, which requires neither end pieces nor eyelets. Each set of contacts inserted between the support strips can be set so as to be adjustable between two adjustable adjusting pieces. This allows the spacing between the contact sets to be adjusted within certain limits. By appropriate design of the insulating sleeves a gVoßer creepage can at the same time close distance! Wipe the contacts are achieved with the inventive Anzapfumsteller the gear ratio in the star point can be changed in _an d Windungsmittelpunkt. .

Further refinements of the invention and the subject matter of the subclaims. .

⁸ The invention is explained in more detail below using an exemplary embodiment. In the drawing sleeves15! Are

fine top view of a tap Figure 2 is a sectional view of the tap. 3 is a side view of a fixed contact

tig. 4 is a front view of a fixed contact; The construction of the tap changer consists from two basic units, namely the actual diverter and the manual drive.

The diverter has two Tragle.sten 3 of bel.ebigem cross-soft de Tragemheit form are incorporated into soft fixed contacts 4, the number of _hen on the arrangement and number of stages of the environmental ^ ÄSÄ Kontakte4 patch Iso.ierrang "™ ^m ™ _- Instead of the payloads 3 _r j provided ^

8 ^ ™ Nahrungsmittel ^ _{on the} insulating sleeve, earth the recesses A ^ smd ^ ^ _{dcnen below}

"" ° Y ⁰ J ^ f _56n interlock.

BarteI ^so ™ ^se _{the one} assigned to the phase

_n "! vkSk are arrested by means of adjusting pieces 12, xo con ^ tsatze ^ sJ *" J ^, _areas allow the

? ™haben * "£ ° ^ _ha ß of the support strips 3« patterns

The SteUstoAe ^ _{assigned to the} contact set

whose Hachenw _verse ,, _Uen the fold of

ne can ^be · _{ktsatz lays} the Abslande m

Pmmas f | g ^nd ^ _differently firm. .

the support £ ^th ^ _{4 has a} U-shaped clamp

Jedeito * ° _chniuenen thighs 14, which U ^

Grant for the Le> ^do S ^{en zu} , o K ^ mmsteüej ^ r ^ ^ _{b ld}

ne _r incision in the Ü-thighs and a gect DeJ ^ J ™ ^ _cs> lines »nteisduedhnete ^^ ^ _several lines cjnzuful ·

Guides"

n 5 of the individual fixed contacts -.

vjjji ^^^ 15 for _{ntakte t6} , 17 arise The ^ J ^ S ^^ toff manufactured holder 15 of the £ tonmge, a contacts 16, Π is with

Srtza 9 from "g ^^ _we lche a BoI-

^ taking _{contact 16} 17 ml

35 zer, 2 rag, aer ^ _{n drive strips} 19 ve -

the H, teH u ^ ^ ^^ ^ _{n made of} insulating material

Gefühn, spur gear transmission 20 can be used.

For this purpose 2 sheets of drawings

Claims (4)

ι 2 to achieve a complicated creepage distance. Fer-. no, it is difficult to break contacts. 1. Tap changer to change the gear ratio. _{of the moving} contact is achieved with the switching ratio of a transformer in the voltage S JJie r in the in the g ^ _{by an arrangement VOft} voltageless state in which at least one ™ ⁿ ° ™ ° Zl _the ends of the changeover, what, .. drive bar fixed movable contacts ^^ f ^ aüe the buckling of long insulating longitudinally fixed contacts are displaceable J ^ J ¹ "J Verktemnung the same or to the con and in which each fixed contact is surrounded by such a link to the venuei s movable conformed insulating sleeve that the fe- »1 ^^^^ ^ unmoved Konsten contacts without mutual fastening element through ruiuu _B elements in the form of a modular system between bars ^se J ° ^st J "constructions are based on the two support brackets to contact sets you together ^ ^{E can} j _Isolierg iiedern, of which the are settable, characterized in that ^exc "^ ⁿ | J _{esti" s of} solid and the other for that the insulating sleeves (5) are provided parallel to the longitudinal, 5 I ^^ TfewegUchen contacts Extension of the loads (3) guides (8) on- Bf ^ f ^^^^ en arrangement forms each link ways where at least one is the movable one. At a suiui. £ _s ^J. . Contacts (16, 17) carrying holder (15) made of Iso- an independent J ^ f ^ ^T f _w .on bo will that lierstoff conducts the moment of inertia of these links so that 2 ^! Diverter according to claim U thereby * o follow! unfavorable ^^^ ίΎο ^ ΙζΤΖ ' marked that the holder (15) is provided with two ^raturan _t ^demn 8 ^e \ ^Z L ^ directions uS the guide strips (22). which leads on both sides, often> η different ^^ directions and _{that of} the insulating sleeve (5) in the guides (8) e.g. and that the holder (15) does not have recesses (18) in the known solutions, through which a bolt (2) protrudes, which allows the movable contacts (16, 17) to be controlled with the same control elements. with the shark delta connection for switching in the middle of the ter (15) and two drive strips (19). Windings and a star connection in the star 3 tap diverter according to claim 1 or 2 point to b> the. _{Contacts on the Iso} . characterized in that the insulating sleeve (5) L »e arrangement» u « _ar t _nr ^ rt " γαΠ. α κ at their ends form flanges (10) for creeping members from layers ο fen requires large Abstrrckenveragnlaration possesses. stand between the contacts for a corresponding 4. to secure the tap changer after one of the next dielectric strengths. Claims 1 to 3, characterized in that the moderately large Langsabmcssungen of the diverter Insulating sleeve (5) leads in the direction of the longitudinal extension and its E.nbau m kle.ncre transformers of the trap strips (3) depressions and projections 35 made more difficult. . (7), with which adjacent insulating sleeve .. A tapping plate is also known, with wel- (5) interlock. brazen two. angled support strips nnnenform.g ⁵ are screwed together. Between the ■ _ the webs of the _{support strips to be pointed are in} 40 savings are the fixed ones surrounded by insulating sleeves The invention relates to a tapping contacts clamped in guide grooves in the Steller to change the transmission ratio side walls of the channel forming webs of the support line Transformer in de-energized state. most a drive bar is slidably guided, m in the case of which at least one drive strip is attached to the groove of the drive strip in recesses Movable contacts are guided along fixed contacts 45 screwed movable Korrtakts sit. Through are displaceable and in which every fixed contact such a training of the support bars and Anmit is surrounded by an insulating sleeve shaped in this way, drive strips can make the fixed contacts in the manner of a that the fixed contacts without mutual fastening modular system to form sets of contacts together be placed in between in the manner of a modular system. Such a diverter 'st give it away, however two support strips to form sets of contacts - 50 relatively complicated. For example, they can be suspended are. Such a tap changer is savings in the support strips and the drive strip knows (German patent specification 621814). Elaborate to produce to accommodate the contacts. Known devices for changing the over- whereby care should be taken to ensure that they are evenly spaced. Settlement ratios of transformers contain a subsequent adjustment of the contact sets for contacts attached to insulating links. The insulating 55 Compensating for an incorrect distance is not links can be machined for their shaping. In addition, this well-known change allows what does not lose its dielectric properties, the advantages of a modular system deteriorate and to take full advantage of an increase in the external dimensions. makes these devices necessary. Furthermore, the invention is based on the object of having to screw the contacts 60 of the initially mentioned type to the insulating members during the assembly of the diverter and to create which must be simple, compact and easy to use during the drying process is sufficiently stiff. Game to be eliminated. This object is inventively ge The devices mentioned have still further solves that the Isoüerhülsen parallel to the longitudinal success end disadvantages: Ge- When using paper 6 ₅ stretching of the support strips guides have to pressed Schichtisolierstoffe it presents great difficulties which at least one the Movable contacts tarsity, by machining, such as drilling, gender holder made of insulating material slides. Milling or turning, grooves or ribs to form, in the case of the tap changer according to the invention bil-