SU1096722A1 - Cabinet for factory-assembled switch-gear - Google Patents

Abstract

1. CABINET COMPLETE DISTRIBUTION OF THE DEVELOPMENT DEVICE, comprising a case with a door, inside of which is placed a switch with fixed and sub- movable contacts, with movable contacts mounted on a shaft rotatable from the handle, characterized in that, in order to simplify its design, reduce overall dimensions and increase reliability, it is equipped with a sleeve, a finger and a pull, and the sleeve is rigidly connected to the door, one end of a finger placed in the sleeve rotatably, and the other end thereof is pivotally connected to one end of the rod, which is pivotally connected to the shaft handle by the other end. 2. The cabinet according to claim 1, is also distinguished by the fact that the hinged connection of the cable with the handle is made in the form of an axis rigidly connected to the handle and placed in the hole of the cable which is made with rounded edges .. 3. The cabinet according to PP.1 and 2, of which there is a box and with the fact that the hinge connection of the pin and the finger is made in the first view of the axis, the end of the finger is made from,; two protrusions, between which the ram is clamped to the end of the rod, the protrusions and tails being made with holes in which the axis is placed.

Description

FIELD OF THE INVENTION The invention relates to electrical engineering, in particular, to complete electrical distribution distribution structures. Krayev (KRU) medium voltage.

A switchgear cabinet is known, comprising a case with a door, inside of which there is an isolator with fixed and movable contacts, with movable contacts mounted on a shaft rotatable from the handle, fij.

The disadvantages of the known device are large dimensions, complexity of design, low reliability in operation and maintenance, since the rotary unit must be pulled out of six high-voltage contacts without much reduction in effort (since there is no kinematics that reduces the force: due to the transmitting units). It is also insufficient without the danger of maintenance, since the operation of turning the disconnector unit is performed with the cabinet door open and personnel may get under high voltage, since there is no partition or preventing access to high voltage on the fixed contacts of the disconnector.

The purpose of the invention is to simplify the design, to enlarge its dimensions and to increase reliability.

The goal is achieved by the fact that the cabinet of the complete switchgear, comprising a case with a door, inside which there is an isolator with fixed and movable contacts, the movable contacts being mounted w-on the shaft rotatable from the handle, equipped with a sleeve, a finger and a pull, the yrich sleeve rigidly is connected to the door, one end of the finger is placed in the sleeve rotatably, and the other end is pivotally connected to one end of the rod, which is pivotally connected to the shaft handle by the other end.

The hinge connection of the cable with the handle can be made in the form of an axis rigidly connected with the handle and the cable placed in the hole, which is Bk with rounded edges.

The hinged connection of a pin with a pull can be made in the form of an axis, the end of a finger is made with two protrusions between which the end of the pull is placed, and the protrusions and the end of the pull are made with holes in which the axis is located.

FIG. Figure 1 shows a cabinet with a detached side wall, side view; in Fig.2, section A-A in Fig.1; in fig. 3 - the same, with the door in the open position; . in fig. 4 section bb in fig.Z; in fig. 5 — node 1 in FIG. 3; on. FIG. b - se 1e dd in fig. 2

1Kaf KRU contains a housing 1 with a door 2, inside of which is placed a disconnector 3 with fixed 4 and

5 movable contacts in the form of knives. Seat transformer b and high-voltage fuses 7 are also located in case 1, and line buses 8 are separated from transformer by insulating partition 9.

The handle 10 of the shaft 11 of the disconnector 3 is pivotally connected to the end of the rod 12, and its other end is pivotally connected to one end of the finger 13, the other end of which is placed with the possibility of alignment in the sleeve 14 rigidly fixed on the door 2 of the cabinet 1 of the cabinet. Moreover, the end of the finger 13, which is connected to the thrust 12, is made in the form of a fork with two projections 15 and 16, between which is placed the end of the thrust 12, and the protrusions 16 and the end of the thrust 12 are made with holes in which the axis 17 is located.

On the shaft 11 of the disconnector 3, the movable contacts 5 of the disconnector 3 are fixed by porcelain insulators 18. The flexible connection 19 makes electrical contact between the movable contacts 5 of the disconnector 3 and the terminals of the transformer b through a fuse 7. There is also a second door 20 that prevents access to the inside of the cabinet if not relieved. The hinge connection of the handle 10 of the disconnector 3 with the step 12 is made in the form of an axis 21 rigidly fixed on the handle 10 of the handle 10. placed in: openings 22 with rounded edges, which is made in ta ge 12. This connection allows ta 12 to rotate around two axes, i.e. such a connection performs a rotary hinge.

The device works as follows.

To perform a routine inspection or to replace fuses 7, a circuit breaker (not shown) must be turned off. at the same time, the auxiliary transformer is disconnected from the secondary circuit and door 2 is unlocked, which turns 100 and rotates the hinge connected to it 1 Shaft 11, also connected to 12, rotates and ends disconnector 3 disengages from fixed contacts 4 disconnector 3 I

Thus, the auxiliary transformer is disconnected from the main circuit. The shaft 11, when rotated, is approximately fixed by a physiator (not shown). The last one will temporarily unlock the second door 20. When the door 20 is open, access to the auxiliary transformer and high-voltage fuse lm 7 for inspection and replacement are possible. When the door is closed, 2 tons ha 12 turns shaft 11 with movable contacts 5 disconnector 3, Movable contacts 5 disconnector 3 enters its fixed contacts 4 when door 2 is completely closed. The second door 20 must be closed first, and when it is closed, door 2 is unlocked (not shown).

When using the invention, the cabinet dimensions are reduced, the design is simplified, there is no need to install a disconnector drive, the access to high-voltage fuses is simplified, the control of handles is simplified,

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Claims (3)

1. CABINET OF THE COMPLETE DISTRIBUTION DEVICE, comprising a housing with a door, inside of which there is a disconnector with fixed and under-. movable contacts, and movable contacts are mounted on a shaft rotatable from the handle, distinguishing with the fact that, in order to simplify its design, reduce dimensions and increase reliability, it is equipped with a sleeve, a finger and a pull, the sleeve being rigidly connected to the door, one the end of the finger is rotatable in the sleeve, and its other end is pivotally connected to one end of the rod, which is pivotally connected to the shaft handle by the other end. 2. Wardrobe pop. ^ characterized in that the articulation of the rod with the handle is made in the form of an axis rigidly connected to the handle and placed in the hole of the rod, which is made with rounded edges. 3. The cabinet according to claims 1 and 2, with the fact that the swivel of the finger with the rod is made in the form of an axis, the end of the finger is made with two protrusions, between the end of the rod, moreover. nets traction made with holes in which the axis is located. with which the protrusions and