DE158373C - - Google Patents

Description

IMPERIAL

PATENT OFFICE,

The present invention relates to a high voltage rotary switch with under oil lying contacts, in which the neglect bezw. Replace the worn ones Contacts can be accomplished easily and quickly.

In the past, switches of this type had to ensure that the contacts could not be touched safely to make accessible the electricity in front of the

ίο switches are interrupted. By present Invention it is possible to replace the worn contacts without turning off the power or removing the To accomplish connecting lines and thus the monitoring of a high voltage system much easier than previously possible.

The switch consists of a carrier for the contacts and the switching device

serving, half-filled with oil , which is closed on the upper planed edge by a lid c held with a clamp b .

In the end walls of the box, the insulating bushes d holding the fixed contacts - two or more depending on the type of current and purpose - are firmly cemented in place.

The current is through square, with

Metal bolts e provided with nuts for fastening the connecting lines are fed to the fixed contacts f; from here, the switching contacts g, which are enclosed by the jaws of the contacts f, establish the connection with the fixed contacts /. The switching contacts g are rigidly connected by means of cemented insulating sleeves h to the U-shaped switching cross member k which is rotatable about its shaft i.

The contacts I are also connected to the current conductors with square metal bolts with nuts.

The connection screws protruding outward from the insulating bushes d are provided with insulating caps n, which are held by insulating buttons m , to prevent contact.

Switching on and off is done by means of the switch lever p, which is located on the outside of the box with the switch mounted in brass bushings 0. shaft i is firmly connected.

The deflection of the shift lever ρ is limited by the stops q and r.

The stop pin s is used to hold in the respective position.

To inspect or replace the worn contacts, the cover c and the stop screw q are removed, the switching lever and thus also the movable contacts g rigidly connected to it are rotated upwards and held in this position, indicated by dots in FIG. 2, by the stop pin s . Then all wearing out contacts - g and / - are currentless and can be replaced as required; the contacts g by loosening the screws t, the contacts / by loosening the screws 11.

To avoid accidental touching of the contacts / - during replacement - with the energized con-

clocks f the first-mentioned contacts are guided in the metal pieces ν firmly screwed and soldered to the current bolt e in a swivel-tail groove in such a way that half the length of the contact arm w can only be removed in the vertical direction.

Claims (1)

Patent claim: High-voltage rotary switch with contacts located under oil, characterized in that the contacts ff and I) arranged for the current supply and discharge lines on opposite vessel walls are connected to one another by contact segments (g) which are isolated on the axis of rotation and rotatable outwards after the vessel lid is opened be connected so that the latter first come into contact with the contacts ff) of the supply lines and then close the current at the discharge contacts (I) , whereby the contacts can be easily replaced after unscrewing the contact segment on the container without the current elsewhere having to interrupt. 1 sheet of drawings.