Scanelec AS delivers Duresca touch safe busbar solutions manufactured by MGC Moser Glaser AG in a range up to 7000A / 12-170kV (for other demands on request).
This is a busbar system that I based on the RIP-insualtion(resin impregnated paper) and it is a compact system with small bending radiuses compared to cable at comparable current/voltage levels. The system is tailor-made to fit your project and demand, and it is a reliable and maintenance free solution with a long lifetime.
The DURESCA® busbar system provides a compact and a fully electrically shielded solution for power plants, substations, offshore windfarms.
The reduced bending radius allows the application in limited spaces. The individually insulated busbars are simple and quick to install and guarantee a long service life, maintenance and partial discharge free operation.
The DURESCA® busbars also withstand extreme conditions on offshore platforms, in petrochemical industries, and also in the desert with high sun exposure and temperatures above 50°C.
The DURESCA busbar system is available in two versions:
The DURESCA Busbar System
The conductor is made up of a cylindrical aluminium alloy type EN AW-6101B T7, or of an electrolytic copper. The insulation lies directly on the conductor and consists of wrapped paper dried under vacuum and impregnated with EPOXY resin. Conductive grading layers are embedded during the wrapping in the insulation for the field control. An earth screen in copper of min. 50 mm2 is embedded in the insulation. It is, in case of an exceptional failure, the best protection for the people and the installation. On the whole lenght of the bar, the surface of the insulation is covered by a protection tube. This tube provides an effective barrier against moisture ingress and an good protection against shocks.
The single bars are manufactured in lengths up to 10 meters. For longer bus runs or by tight place conditions where only short pieces can be installed, the single busbars are joined together on site. The joints are flexible or rigid and are also electrically shielded by insulating sleeve. The single bars are custom made and their installation consists mainly of the easy assembly of standard components. The adjustment of the length occurs in the insulating sleeves through the use of flexible connectors.
Testing / Quality assurance each single bar is subject to a routine test schedule which consists of:
measuring of capacitance, tan delta, partial discharges and 50 Hz withstand voltage test. Each GIS connection part is additionally pressure tested to check its sealing properties.
Type DURESCA® DE
The insulation body is protected by a high quality (PA12) corrugated tube in polyamide. Furthermore, the corrugation provides an increase of the creepage distance on the end of the busbar. The selected quality authorizes as well an indoor or outdoor use.
The good behaviour in the severe climatic conditions was checked according to the ASTM Cd 2565 standard and tested in an independant laboratory. MGC has used this type of protection tube for more than 20 years.
Description of DURESCA® busbars, type DE:
Type DURESCA® DG
In case of particular requirement in an heavely polluted area the polyamid corrugated protection tube could be replaced by one in CrNisteel or Aluminium.