SU1573498A1 - Measuring member for current protection - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to devices protecting electrical networks from short-circuit currents and overloads. The purpose of the invention is to expand the scope of use. The measuring device for current protection contains a reed switch 1, a turning disk 3, a rack 2, a holder, a clamp 12. It is installed near current-carrying elements on the wall of a switchgear cabinet or a closed conductor. Moving the device along the grooves and turning the disk, it is tuned to the amount of current at which the reed switch operates. 3 il.

Description

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The invention relates to electrical engineering, in particular, to devices protecting electrical networks from short-circuit currents to overloads.

The purpose of the invention is the expansion of the field of use

Figure 1 shows the measuring element for current protection, front view; on Fig - the same, side view; in Fig „3 - view A on fig„ 1о

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The reed switch 1 with the help of racks 2 is mounted on a non-magnetic disk 3, on the front side of which a scale 4 of the turn indicators is placed on the circumference. The disk 3 is connected by an axis 5 to a stand 6 to which the screws 8 secure the holder 8 with a rectangular protrusion 9 and the screws 10 attach the arrow 11 of the turn indicator ,, To fix the position of the disk, there is a clamp 12, at the end of which there is a rubber pad 13 Screw 14 clamp 12 presses the radial channels 15 of the disk 30 to install the measuring body in the wall 16 of the current lead (or the switchgear cabinet case) two through grooves are cut, the groove 17 - Under the edge of the disk 3, and the groove 18 - under the rectangular protrusion 9 of the holder 8 . Then holder 8 and edge of disk 3 with part of w Qala 4 and several radial channels 15 will be on one side of the wall 16, and a reed switch 1 on the other.

The installation of the measuring element for current protection is carried out as follows)

The holder 8 is detached from the rack 6 with screws 7. The disk 3 on the rack 6 is mounted on the wall 16 on the side of busbars (not shown) in such a way that the edge of the disk 3 should protrude from the groove 17 and the holes for the screws 7 are opposite the groove 18f. Then the holder 8 is fastened with screws 7t, while the rectangular protrusion 9 of the holder 8 is inside the groove 180

To move the measuring unit relative to the busbars, it is necessary to loosen the screws 7 and move it to the required distance along the slots 17 and 18, after which the screws 7 should be tightened, so that the reed switch position under the busbars is changed from the outside of the wall 16. To change the angle. the reed switch 1 and wall 16 must be loosened by screw 14. The latch 12 with the rubber pad 13 disengages from the radial channels 15 of the disk 30 The required angle y is set against the arrow 11, then the screw 14 is tightened aets. This operation is also performed on the outside of the wall 16.

Claims (1)

Invention Formula A current protection metering device containing a reed switch, an insulating bar, a rack, a direction indicator with a scale and an arrow, a wall, the reed switch is mounted on an insulating bar, the insulating bar is positioned on the rack so that it can be rotated, - so that, in order to expand the scope of application, it is provided with a holder and a retainer, the holder is made with a protrusion on one of the surfaces, the said bar is made in the form of a disk of non-magnetic material, on which is applied turn indicator, two through grooves are made on the wall, the indicated arrow of the turn indicator and retainer are fixed on the holder, the indicated stand and the holder are placed on opposite sides of the wall and fastened with each other, the holder's protrusion is inserted into one of the through slots of the wall, and another through groove of the wall is inserted disk. sixteen  1B 1 m16