SU736187A1 - Multi-turn adjusting winding of transformer - Google Patents

Description

one

The invention relates to the electrical industry, in particular to the current-carrying taps of the multi-way control windings of transformers with voltage regulation under load (RPN) -,

The known adjustment winding of a transformer with PnHj, whose outlets from each stage of regulation are carried out separately, i.e. All taps are located in areas of increased distance from the winding to the wall of the tank 1.

However, the placement of the adjusting taps requires an increase in the distance between the winding and the tank in excess of the minimum determined by the electrical strength of the insulating gap, due to the large insulating gaps between the taps, the taps and the taps to the tank wall.

Also known is the multi-way adjustment winding of a transformer, having several strokes - adjustment steps assembled at the output of the winding into a single-layer package of taps, in which taps of the nearest adjustment steps are located, and split into two groups, one of which at some distance from the winding a large radius is bent to the right angle, and the branches of the other group are fanned out with a direction to the side of the limb of the branches of the first group, then the branches of both groups are placed in two parallel layers 2.

Such a winding is closest to the proposed technical essence.

ten

However, in the place of the transfer, in front of the switching device, there are taps with a large potential difference, and to ensure the electrical strength, it is necessary to increase the insulating gap between the taps and the thickness of the solid insulation on the taps. Reposition of taps requires a large space, because of which the adjusting windings are placed on the side (vertical) frame, the magnetic circuit is extended

Claims (2)

20 and tank. All this increases the size, consumption of expensive electrical and structural steel, copper, refrigerant and other materials, as well as labor intensity, which significantly impairs the technical and economic performance of transformers. The aim of the invention is to reduce the capacity of the pipe by reducing the layout dimensions of the adjusting taps at the place of their transfer. This is achieved by the fact that in the proposed multi-way adjustment winding of a transformer with several adjustment steps, assembled at the output of the winding into a single-layer package of taps, in which the taps of the next adjustment steps are located, the adjustment taps are grouped into a spatial stepwise trapezoid, each step KOiroroy is filled with two branches of the adjacent adjustment steps. Moreover, the taps are filled with winding copper (wire). In FIG. 1 is a schematic diagram of the proposed adjustment winding with taps; in fig. 2 is a view along arrow A in FIG. 1, the preferred embodiment in FIG. 3 - the same, a possible option; in fig. 4 is a view along arrow B in FIG.: 2; in fig. 5 is a view along arrow B in FIG. 3. The number of entries in the control winding is equal to the number of steps of regulation. Each winding run has a tap made by winding copper and numbered in order of increasing potentials (adjustment steps) from 1 to 16. The wires of the winding adjustment steps at the output of the latter are assembled into a single-layer horizontal package, and then to reduce the insulating gaps between the taps and The values of solid insulation, the taps are located near, with a minimum (equal to the level of regulation) potential difference. For this wire, regulating winding steps at the point of their transition to adjusting taps are grouped into a spatial step trapezium, each step of which is made by two taps of adjacent adjustment steps: 1-2.3-4 ,, 15-16, having a minimum (equal adjustment step) potential difference. The reduction in the layout dimensions of the taps allows the adjustment windings to be located not on the side (additional) frame, but on the main rod, which reduces the laboriousness of winding manufacture and the consumption of materials. Invention Multiple adjustment winding of a transformer having several strokes - adjustment steps assembled at the output of the winding into a single-layer package of taps, in which taps of the next adjustment steps are located in a row, which is different in that it reduces the laboriousness by reducing the layout dimensions of adjustment taps in the place of their transfer, adjusting taps are grouped into a spatial stepped trapezium, each step of which is made of two taps adjacent steps regulation. Sources of information taken into account in the examination 1.Sapozhnikov A.V. Designing transformers. SEI, 1959, p. 213, 215. 2. Autotransformer AODTSTN-417000/750 / / 500. Calculation note 6BB.639.091SB, sheet 3, 1975. P 7 I iii, K til igi I I 1 I ± Ж igi i i / fi fT , - „-:, 736187  .j, ;;, G., V-. f .. V -:.  i 3 J4 | 5 | ff | 7fB | gpOpll tf | t3jy | 5 | r6 7 7 7 I-77-77-g7 1  J I J f / J / J