• Medium voltage switchgears
• RXD
• RXD 36
• RELF
• RELF ex

• Low voltage switchgears

• More MV Switchgears

EXTRANET

• Home Page /
• Products /
• Medium voltage switchgears /
• RXD 36 /
• Structure

Medium voltage switchgears RXD 36

Structure

The switchgear is a cubicle type device in an enclosure, made of riveted sheet metal shaped by bending. The walls with apparatus brackets create a self-supporting structure. The enclosure contains a separate auxiliary circuit compartment.
The doors are covered with a powder coat of grey colour (RAL 7032) or another colour, upon the customer’s order.

Vent flaps.
There are outlets in the upper part of the enclosure closed by exhaust flaps. Their task is to discharge the pressure created inside the compartment as a result of an internal arc fault. A sudden increase of pressure inside the switchgear causes the plastic screws to break and the flaps to open by deflection.

The busbars are located in the upper part of the enclosure. The busbars pass between the enclosures through gland plates.
This prevents damage from spreading to adjacent enclosures if an internal arc fault occurs. The gland plates made of insulation material are fitted with grommet insulators supporting the busbars. Outflow bars branch off from the busbars.

The main connectoris installed on the withdrawable unit. The withdrawable unit working position and in test/disconnection position is located inside the enclosure behind a closed door. After opening the door, it can be rolled out to separation position.

In the back part of the enclosure there are brackets for installing additional equipment for main circuits.

The auxiliary circuit compartment  i.e. a separate cabinet installed in the upper front part of the switchgear front panel is used to install:

• protection units,
• inspection,
• measurement and control equipment ,
• automation elements.

There is a series of openings in the enclosure walls for cable trays, as well as grommets for cables and wires. The openings are covered by plates in which holes can be made if necessary. A perforated installation plate was designed for equipment installation, placed at the back wall of the enclosure. The equipment may also be installed on the side walls. 
 

RXD36 switchgear - panel equipment

1 - connecting busbars,
2 - main device: circuit breaker,
3 - earthing switch,
4 - current transformers,
5 - voltage transformers,
6 - support insulators (reactance),
7 - bushing insulators,
8 - surge arresters,
9 - protection devices,
10 - earthing busbar.

print add to notes