Prefabrication of MV switchboards by Strunobet-Migacz Sp. z o.o. is the next step in the development of the company aimed at expanding its business on the market of products for the electric power sector. In 2013, new solutions of air-insulated distribution switchboards with the possibility of using them for cable connectors as well as for container stations were introduced.
Switchboards are prefabricated in accordance with the PN-EN 62271-200:2012 standard, and the fields are arc fault protected.
Another MV product of ours enables us to extend the range of our previously offered solutions.
SWITCHBOARD TYPE RSS-24/630 IN AIR INSULATION
The RSS-24/630 switchboard is to be used in transformer stations as well as in MV cable joints, in particular where SF6 insulation solutions are not allowed. This switchboard has been made in accordance with the PN-EN 62271-200:2012 standard. The switchboard set uses NAL 24 load break interrupter switches manufactured by ABB, in air insulation. Switchboard panels are produced as an arc fault protective type. The structure of the panel has components made of aluzinc metal sheet and are joined with blind rivets The system of mechanical interlocks makes it impossible to perform incorrect switching operations and to remove the guard before switching off the voltage and the earth switch. The basic panel is a feeder panel. Other panel options to be agreed on with the company Strunobet- Migacz Sp. z o. o.
The advantage of the switchboard is its compact system, with minimum panel dimensions for this type of switchboard sets. (width = 615mm, depth = 950mm, height = 1600mm).
Arranging the load break interrupter switches and earth switches one after another allows for a simple system of switching on and switching off, without the need to use the transmission of the drive system.
There are permanent insulating barriers in the switchboard that prevent service staff from access to the components under voltage. In this system, the insulation barrier widely used in the fused load break switch system, which is manually slid between the contacts of this switch in case access to the switchboard is needed, has been removed. It facilitates the operation of the switchboard panel.
The doors of the fused load break switch compartment and the cable compartment are installed on hooks. They are self-adjustable and therefore can be opened in an easy and reliable way. The doors installed on hooks make access to the inside of the switchboard panel easy, especially in the case of cable connectors. Inspection windows in the doors allow unambiguous visual determination of the position of the blades of the load break interrupter switch and the earth switch. The system of mechanical interlocks makes it impossible to perform incorrect switching operations as well as it prevents access to the switchboard panel before the voltage is switched off and the earth switch shut down.
Relatively small overall dimensions of the switchboard panels make it possible to use them as replacements for the switchboard sets which have gas insulation (SF6), thus eliminating the inspection and disposal of the SF6 gas.
RSSW-24/630 SWITCHBOARD IN AIR INSULATION
The RSSw-24/630w switchboard is designed to be used in container transformer stations which are managed from the inside and all types of internal stations. This switchboard has been made in accordance with the PN-EN 62271-200:2012 standard. The switchboard set uses the KLS 24 and KLSF 24 load break interrupter switches manufactured by UESA. It is also possible to use the equipment manufactured by ABB, types NAL and NALF. Switchboard panels are produced as an arc fault protective type. The structure of the panel has components made of aluzinc metal sheet and are joined with blind rivets The system of mechanical interlocks makes it impossible to perform incorrect switching operations. Switchboard panels have three separate compartments: for cable service lines, load break interrupter switches and secondary circuits. Configuration and additional components should be agreed upon with the representatives of Strunobet-Migacz Sp. z o. o.