RU12295U1 - OUTLET ELEMENT TYPE VET-6 COMPLETE DISTRIBUTION DEVICE (OPTIONS) - Google Patents

Description

Utility model - the rolled-out element of type VET-6 relates to the equipment of power plants and substations and is intended for use in complete switchgears (switchgear) with a voltage of 6 kV.

Retractable elements of this type are used in the reconstruction of switchgear cabinets of the KX, KXX1, KXXU series by replacing exhausted or failed electromagnetic circuit breakers of the VEM-6-2000 type with SF6 circuit breakers of the VF series or other series.

Known withdrawable elements of the KX, KXX1, KXXU series with high voltage circuit breakers of the VEM-62000 type installed on them (1).

The withdrawable element is a switch on which the upper and lower movable contacts of the main circuits are installed, flexible connection of the wires in the metal hose with the insertion of the plug connector at the end, a latch with a locking element and a handle displayed on the facade, a manual switch lever with a switch position indicator, manual disconnect handle protective grounding contacts, in the lower part there is a bracket for mounting the lapping lever for driving in and out, as well as strips for opening and closing protective curtains.

The design is a welded metal frame on a wheel base which is equipped with a VF series SFG circuit breaker (see figures 1, 2 and 3).

The terminals of the circuit breaker poles are connected by main busbars to the upper and lower disconnecting contacts mounted on the frame. As an embodiment, on the terminals of the switch poles, if necessary, cooling radiators are installed for the switchgear K-XX1 and K-XXU (2000 A).

On the withdrawable element, inter-fauna insulation partitions are installed. As an option, an insulating partition is provided between the upper and lower current-carrying terminals. A pressure gauge is installed on the withdrawable element, showing the pressure in the phases of the switch and the counter of the number of operation of the switch, which are closed on the facade sheet with a rotary cover.

On the front sheet there are windows for information on the status of the switch.

The grounding of the VET-6 is provided in the working, control and intermediate positions by two sliding spring-loaded contacts installed under the base of the withdrawable element.

6, the upper part of the withdrawable element is fixed with a flexible hose of auxiliary circuits with a plug connector. The draw-out element has rollers and strips for raising the curtains.

Figures 1 and 2 show a rolling-out element for switchgear cabinets KX, K-XX1, K-XXU (up to 1600 A). In Fig. 3, for switchgear cabinets K-XX1 and K-XXU (2000 A), the design of the VET-6 is shown with cooling radiators installed on the terminals of the switch poles.

An SF-2 circuit breaker 2 of the VF series is installed on the welded metal frame 1.

The terminals of the poles of the switch 2 are connected by buses 3 and 4 with the socket disconnecting contacts 5 and 6.

The findings of the poles of the switch (Fig.Z) installed cooling radiators 7.

The frame of the withdrawable element contains the elements of the fixation / control and blocking 8.

Interphase insulating partitions 9 are installed on the withdrawable element (Fig. 1).

In Fig. 3, an insulating partition 10 is installed between the upper and lower terminals of the switch / and the partition 11 is behind the poles of the switch.

Under the base of the frame VET-b (Figs. 1 and 3), two sliding spring-loaded contacts 12 are installed for grounding.

The facade of the VET-6 is closed by sheets 13 and 14. On the sheet 14 there are handrails 15 and a flexible hose of auxiliary circuits with a plug connector 16.

On the sheet 13 there is a handle of the locking mechanism 17, a pressure gauge 18 with a filling valve and a switch operation counter, a rotary switch 19 for manual (non-operational) turning on / off of the switch, locking locks 20, windows 21 and 22 for information on the state of the switch and actuator, a window for information on the number of trips of the switch 23, the hole for the cocking handle 24.

continuous operation compared to oil and vacuum circuit breakers. VET-6 have a higher switching resource.

VET-6 prototypes adopted by the interagency commission were manufactured at the enterprise.

A certificate of compliance with safety requirements ROSS RU.ME.25.B00445 was issued, issued by ANO and STC Standartzlektro-S.

Claims (3)

1. A draw-out element of the type ВЭТ-6 of a complete switchgear (КРУ), consisting of a welded metal frame located on a wheel base, designed to install a high-voltage switch, the terminals of the poles of which are connected by main busbars with upper and lower disconnecting contacts, including a latch with locking elements, with the handle of the locking mechanism pulled out onto the facade, with a bracket for the adjustment and retraction lever, rollers and strips for opening and closing the guard blinds, flexible connection of wires in the metal hose with the insert and complete with a plug for the connector at the end, two sliding spring-loaded contacts under the base of the frame, a rotary cover on the front sheet, closing the pressure gauge and the counter of the number of operation of the switch, windows for information on the status of the switch, different in that a gas-insulated circuit breaker of the VF series or another series is installed in the welded metal frame.  2. The withdrawable element according to claim 1, characterized in that cooling radiators are installed on the terminals of the poles of the 2000 A circuit breaker. 3. The withdrawable element according to claim 1, characterized in that insulating partitions are installed between the upper and lower current-carrying terminals and the poles of the 2000 A circuit breaker.