Medium voltage
Container – MV/LV transformer stations in concrete enclosures
KSW and KSZ containerized transformer stations are designed to power urban consumers, construction sites, industrial plants from cable or overhead-cable medium-voltage networks.
Implementation
- Enclosures of containerized transformer stations are made in the form of elements that are monoliths. Self-compacting concrete SCC class C30/37 is used for production. Stations with external service (KSW) consist of three independent elements: cable cellar, main body, roof.
- Externally operated substations (ASCs) and MV cable connectors are made up of 2 components: main body, roof.
- Cable cellar made of a uniform prefabricated structure that is also the foundation of the station. A partition is made in the cable basement to separate the cable compartment from the part serving as an oil sump. This sump is capable of holding all the oil from transformers installed in the station in case of their failure. The exit of cables from the foundation is carried out through sealed cable penetrations. The entire surface of the cable cellar is coated with means to ensure water and oil tightness.
- Main body is a monolithic system of four walls and a floor made of self-compacting concrete SCC class C30/37. In the main body are mounted MV and LV switchgears, metering panels, telemechanical cabinets, transformers and other equipment of the station. Underneath the switchboards, penetrations are made in the floor in order to run cables to the station foundation. At the request of the client, in order to achieve the required fire resistance class (up to REI 120), fireproof panels are fixed on the inside of the walls.
- The outer surface of the walls is covered with acrylic plaster. The standard color scheme of the station is given in the table. It is possible to use a different color scheme or a different type of station facade. The inner surface of the housing is covered with acrylic plaster in white as standard.
- Separate doors are provided for the transformer compartment and the compartment with switchgear, made of steel sheet (aluminum doors on request) powder-coated in any RAL color. The doors are equipped with ventilation louvers for equipment cooling and room ventilation.
- Roof It is seated on the walls of the station on elastomeric pads. It is made in the form of a rectangular reinforced concrete slab with a thickness of: 130mm in the center, 90mm at the edges. Variable thickness is used to achieve a 2.2% slope. The outer surface of the roof is painted with weather-resistant paint in RAL colors. It is also possible to make the roof in variants of two- or four-slope overlays adapted to the architectural requirements. Covering of the overlays can be made of sheet metal or ceramic tiles.
Apparatus
- Apparatus is selected to meet the individual needs of the customer and the professional power industry. The offered solutions take into account the optimization of performance in terms of technical and economic aspects. In order to satisfy a wide range of customers and meet their individual needs, our stations are approved for use in the professional power industry with the following types of switchgear.
- Performances of individual stations also take into account the possibility of using other apparatus. Detailed data on the products used can be found in the catalogs and DTRs of individual devices on the websites of their manufacturers.
MV switchgears
- We use switchgear from several manufacturers, which we select according to individual needs. We use switchgear in air insulation and in SF6 insulation. Switchgears are adapted for operation in Smart Grid networks. Switchgears are made of individual fields with any equipment, which, when combined together, form a fully functional switchgear. The configuration and parameters of the switchgear depend on the selected manufacturer, we offer, among others: our own production – RSS-24w, Schneider – RM6, SM6, ABB – SafePlus, SafeRing, UniSec; Efacec Normafix, Fluofix; Eaton – Xiria; Siemens – 8DJH.
- Available fields: linear; breaker; transformer; measuring; clutch; rail.
Transformer
- The transformer is selected individually for the project, taking into account the parameters of power supply, quality, and characteristics of the object. The connection between LV /MV switchgear and the transformer is made by cables. It is also possible to make a low-voltage connection using busbars, or rail bridges.
RWT LV switchgear
- The switchgear is built on the basis of a modular housing that provides a rigid structure in which LV apparatus is mounted. The switchgear can be configured according to your needs and can include the following modules: MZ power supply module; MO drain module; MP measuring and balancing module; MA aggregate module; SON lighting module; MBK; capacitor battery module.
- The RWT switchgear is additionally equipped with protection of own-needs (PW) circuits, which include station lighting, 230 V outlet and additional circuits depending on the project. In the case of KSZ-type stations, RWTz-type LV switchgear is installed in the enclosure.
Other equipment
- Door and ventilation joinery.
- Lighting and grounding installation.
- Fans.
- Fire dampers.
- Sealing systems for LV and MV cables.
Frequently asked questions
What is your delivery time?
Standard delivery time is approximately 6-8 weeks depending on the order. Please contact us to arrange a more detailed delivery date.
What effects do your charging stations have?
We offer an extensive range of products, encompassing both AC and DC EV chargers featuring diverse equipment configurations and power outputs. The power spectrum of our EV chargers includes:
- AC 3.7-43 kW
- DC 40-480 kW
Who installs charging stations?
Charging stations are only installed by Swedish certified electricians.
How fast do your stations charge?
The fastest DC chargers can charge a car in up to half an hour. Charging time for electric vehicles depends on:
- EV charger power
- battery capacity
- the power of the converter installed in the car.
Which station is best for private use?
The best choice for private use are small stations such as:
- EVB E-wall - mounted in the wall not only makes it much easier to use, but also blends almost seamlessly into the façade and improves its aesthetics.
- EVB Wallbox 2M AC - it can be hung on the wall in the garage, thanks to which it takes up little space and can charge two cars at the same time. Charging point power up to 22 kW.
How is the advertising content on EVB Adverts charging stations managed?
Advertising content on EVB Advert chargers is managed using the Digital Signage Android Player. It is an extremely functional software for remote management of content on the monitor. The software allows you to manage content from any place with Internet access - just log in to the relevant website, upload videos, images, webpages, RSS feeds, remote content, divide the screen into any number of screen areas of any size and position, and much more. The big advantage of Central Stacks software is that the server is in the cloud, so the client does not need to install and maintain it on its side, and therefore the content of any connected media can be managed anywhere and on any device by logging into the server through a web browser.
Our billing model for Central Stacks licenses is also very simple and transparent, unlike many other systems on the market, since the annual license price already includes all the costs incurred by the customer for the system including server maintenance, etc., so at each stage of the project the customer knows exactly how much it will cost him to expand the DS network with additional installations.
How to settle accounts with charger users?
Our stations are equipped with a measurement and billing system, which enables quick settlement with the customer. Settlements are made via mobile applications, RFID cards or a payment terminal.
What is the difference between charging a car with AC and DC?
In the simplest terms, the key distinction lies in the charging speed of the vehicle. In the case of alternating current (AC), the EV is usually charged slower compared to direct current (DC), because the alternating current needs to be converted, and the charging speed depends on how much current the wallbox can supply and how much current the vehicle battery can handle. Charging with alternating current is the most popular method of charging electric vehicles and is widely used, among others, while charging at home.
DC charging, on the other hand, is a faster charging option often used in public places using chargers with higher power outputs. Unlike AC charging, DC charging delivers direct current to the vehicle battery without a conversion process. The type of charging station you should install depends entirely on your needs and specific requirements. In public areas such as parking lots, a combination of AC and DC charging can provide a pragmatic solution to meet the diverse needs and preferences of different guests.
Are you nationwide?
Yes, we provide installations throughout Sweden, as well as in Europe.
Contact us
We are a dynamic company that places a strong emphasis on technology and innovation. With extensive experience in electrical systems, power solutions, and control mechanisms, we are well-equipped to meet your needs.
Our mission is to provide you with the most sustainable, environmentally friendly, and efficient solutions available. Contact us and discover how we can help you achieve your goals.