RU25651U1 - CAMERA COMBINED ONE-SIDED SERVICE (CSR) - Google Patents

Abstract

Prefabricated one-way service chamber (CSR), containing a high-voltage circuit breaker, current transformers and disconnectors, characterized in that the chamber frame consists of prefabricated structures, in the upper part of which there is a vacuum circuit breaker installed in the compartment, which is isolated from the cable partition with current transformers , the busbars and the low-voltage compartment are also isolated from the compartment of the high-voltage circuit breaker; the camera has a system of mechanical interlocks that prevent reading and disconnecting linear and bus disconnectors when the high-voltage switch is turned on, blocking that does not allow grounding knives to be turned on with the disconnector working knives turned on, blocking that does not allow disconnectors to be turned on when the grounding knives are turned on, there is also a system of electrical interlocks in the chamber that do not allow turning on the high-voltage switch the disconnector in an intermediate position and not also allowing the inclusion of an input switch when the grounding x knives ground busbar chamber.

Description

Chamber national team of unilateral service (KSO).

6 and 10 kV prefabricated one-way service chambers (CSR) belong to the field of electrical engineering and are intended for three-phase alternating current distributors with a frequency of 50 Hz of systems with an isolated neutral or grounded through a quenching reactor.

Known Cabinet complete switchgear (RF patent No. 1775781, Н02 В 11/26, 1992) containing a frame, in the upper part of which busbars are installed and inside which there are two disconnectors with movable and fixed contact plates, voltage transformers, high-voltage fuses, a power bus system connected to disconnectors, one of which is connected to a power bus system.

Known Complete switchgear type KCO (RF patent No. 1663672, Н02 В 13/02, 1991) containing a frame, the frame of which is made of two compartments - upper and lower, separated by an insulating partition, with busbars and a first located in the upper compartment disconnector, and in the lower compartment - the switch, the second

IPC: Н02В 11/26.

a disconnector, current transformers, interconnected by two disconnectors with movable and fixed contact plates, and a grounding knife, a switch is installed on the frame.

The purpose of this utility model is to improve the technical and ergonomic characteristics of the camera, the optimal location of the structure, reducing the dimensions of the camera, and improving its design.

This is achieved by placing the BB / TEL vacuum switch base up in the upper compartment of the chamber, which is a metal structure welded from bent sheet profiles, and also assembled by means of bolted joints. Inside the camera is placed the main circuit equipment, protection and control circuits. On the front side of the camera are meters and meters, handles of actuators and control devices, alarm relays.

Two doors provide access to the chamber: the upper one - to the zone of the high-voltage switch and current transformers "A, (Fig. 1) the lower - to the zone of cable connections" B. The high-voltage and cable compartments are separated by a continuous metal partition. The equipment of auxiliary circuits is located in the low-voltage compartment “C. Between low voltage and

a removable partition is installed in the high-voltage compartment, which prevents access to the high-voltage zone. The camera has viewing windows for viewing the inside of the camera.

The design of the low-voltage compartment allows you to install any set of relay protection, as well as microprocessor protection units.

The channel for the main busbars of the operational power supply circuits of the switching electromagnets and signaling control circuits is a box located in the middle of the chamber. Also in the box is an output terminal block for interchamber connections of auxiliary circuits.

The following locks are made in the camera:

1) mechanical:

-Lock, not allowing the inclusion and shutdown of linear and bus disconnectors when the high-voltage switch is on;

-Lock, not allowing the inclusion of grounding knives when the operating knives of the disconnector are on;

-Lock, not allowing the inclusion of disconnectors when the grounding knives are on;

-Lock, not allowing the inclusion of a high-voltage switch when the disconnector is in an intermediate position;

-Lock, not allowing the inclusion of the input switch when the grounding knives of the grounding of the busbars of the chamber are turned on.

The camera also provides the ability to install locks.

The switch (3) (Fig. 2) is attached to the upper part of the CSR chamber. A rod (2) connected to the axis of the interlocks (12) is connected to the axis of the switch (1), flags (5) are installed on the axis of the interlocks, which allow to block the operation of the disconnectors (linear and bus).

On the facade of the chamber in the lower part there is a grounding clamp, designed to connect elements temporarily to ground to the grounded housing. The upper door, on which the auxiliary circuit devices are installed, is grounded by a flexible wire.

In the chamber there is a device for installing an internal lighting lamp (incandescent lamp 36 V), which makes it possible to safely replace a burned out lamp without removing the voltage. The cameras have a stationary device for lighting the facade of cameras with a voltage of 220 V.

The busbars of the chamber have solid barriers with a viewing window from the front.

The KSO camera consists of prefabricated elements: front panel, rear panel, sidewalls and internal partitions. Elements are assembled through bolted connections. Inside the chamber, in the upper part, a vacuum high-voltage switch (1) is installed (Fig. 1) with the base up, which is connected through the disconnector RVFZ-10 (2) to the busbars (5). Through current transformers TPOL-10 (4), the switch is connected to the linear disconnector RVZ-10 (3). The control drives of the disconnectors are located on the front panel of the KSO camera.

The camera operates as follows; in this way: the BB / TEL vacuum switch automatically and by means of a control key switches off and turns on the main circuits in the chamber.

Disconnectors (2) and (3) are used to create a visible break in the main circuit and grounding for safety purposes when working in the chamber.

Current transformers (4) provide operation of measurement protection circuits.

Claims (1)

One-way service chamber (CSR), containing a high-voltage circuit breaker, current transformers and disconnectors, characterized in that the chamber frame consists of prefabricated structures, in the upper part of which there is a vacuum circuit breaker installed in the compartment, which is isolated from the cable partition with current transformers , the busbars and the low-voltage compartment are also isolated from the compartment of the high-voltage circuit breaker; the camera has a system of mechanical interlocks that prevent reading and disconnecting linear and bus disconnectors when the high-voltage switch is turned on, blocking that does not allow the grounding knives to be turned on with the disconnector working knives turned on, blocking that does not allow the disconnectors to be turned on when the grounding knives are turned on, there is also a system of electrical interlocks in the chamber that do not allow turning on the high-voltage switch when the disconnector in an intermediate position and also not allowing the inclusion of an input switch when the ground x knives ground busbar chamber.