Rectangular air-insulated Busbars

Busbars with air and solid insulation are designed to make electrical connections in alternating current circuits with a voltage of 6-10 kV, rated current up to 4000 A and a frequency of 50-60 Hz, climate control UHL (*-NF according to Russian standardisation «GOST»), location category 3.1 according to GOST 15150 in accordance with TU 344-011-73361303- 2007.

Advantages of rectangular air-insulated busbars manufactured by TERMA-ENERGO:

  1. Simple installation and assembly.
  2. Convenience of service and repair.
  3. The ability to install additional equipment as agreed with the customer, for example, arc protection devices.
  4. Control assembly is carried out before shipment.
  5. High manufacturing accuracy allows the installation at the facility without presence of manufacturer.
  6. Using high quality imported semi-solid copper tires; panels and metal parts are produced of high-quality galvanised steel Ruukki (Finland).
  7. Air-insulated busbars are certified and tested at the Research Center of Automotive Engineering of JSC «NIIVA».

Air-insulated busbars manufactured by TERMA-ENERGO are divided into several types according to their functional purpose:

  1. Lead-in type
  2. Sectional and others

Metal structures of busbars with air- and solid insulation are made of powder-coated (or galvanised steel) panels which form a strong frame.

The lead-in busbars with air insulation are connected to the cell from one side. From other side busbars outputs are connected into another room to another energy drainage system. An example of this type of busbar is shown in Fig. 1. Air insulated busbar consists of longitudinal sections of different lengths, sections with bushing polymeric insulators (if it is necessary to ensure tightness when the conductor passes through the wall), a vertical outlet to the cell. Section sizes are shown in table 2.

Rated operating voltage, kV from 6 to 10
Rated operating current, A from 630 to 4000
Rated current of electrodynamic resistance, kA up to 80
Closed, rectangular, UHL(*NF) 2

Sectional bridges transfer energy from one cell to another in one room or from one room to another. This type of busbars is made of powder-coated panels (walls), which are interconnected by self-tapping screws, forming a strong frame. An example of this type of busbar is shown in Fig. 2. The busbar consists of rectilinear sections and corner sections. Rectilinear sections interconnect the corner sections. Corner sections are connected to the cells.

Busbars with air insulation include:

  1. Hatches for assembling copper busbars (see Fig. 3);
  2. Perforation on panels to cool down heated bus tires (see Fig. 3);
  3. Holes for assembling busbars to the cells and assembly of busbars’ cells between each other;
  4. Pressure relief valves (see Fig. 3);
  5. Flexible bars and bar holder mechanism to compensate inaccurate construction lengths and bar lengthening when heated by electric current (if this compensation is necessary).
  6. Places for slinging sections

In bar connections a disk washer system is used to provide a fixed force. The set includes lubricant EPS-98 TU 2257-001-47926093-99 to reduce contact resistance.

In bar connections a disk washer system is used to provide a fixed force. The set includes lubricant EPS-98 TU 2257-001-47926093-99 to reduce contact resistance.

  1. Operation reports;
  2. Installation instructions, launching instructions, regulation and running-in of the product;
  3. Passport;
  4. Installation drawings;
  5. Test reports.