Movable Expansion Busbars
Our Laminated Expansion Busbars are used as expansion and vibration compensation within busbar connections. They are also installed as flexible current transmission elements in machine parts, vehicles and switchgear.
The engineering of an Expansion Busbars is influenced by the current intensity, the current path, the connection material, the flexibility requirements and the installation conditions such as ambient temperature.
Expansion Busbars - Conductor Material & Connections
Conductor Material of Expansion Busbars
Depending on the required current values, mainly copper and aluminum strips are used, but also combinations of both materials.
- Copper Expansion Busbars (DBCU) made of Cu-HCP copper fins of thickness 0.2 mm with pressure welded connections of the same material.
- Aluminium Expansion Busbars (DBAL) made of EN AW-1050 0.3 mm lamellae with MIG-welded EN AW-6060 connections.
Connections Expansion Busbars
Press-welded connections have excellent conductivity due to a perfect molecular bond. The connection surfaces can be drilled, milled and bent.
Shielding gas welded connections are locally melted by means of an electrically generated arc. The shielding gas prevents oxidation of the molten metal.
By soldering the connections, even very complicated designs can be realized. Depending on the application, various brazing alloys and processes are available.
The EMS Group is certified according to
DIN EN ISO 9001:2015
Flexible Expansion Busbars
The flexibility of Expansion Busbars compensates for expansion when busbars heat up.
Expansion Busbars also prevent damage to device connections in the event of switching vibrations, for example.
The press-welded connections have low contact resistances and are easy to install.
Configure Expansion Busbars correctly
Expansion Busbars customized
EMS engineers and manufactures Copper and Aluminum Expansion Busbars with technically advanced connections customized on request.
Our Expansion Busbars are manufactured according to DIN 46276, part 1. The current carrying capacity is designed according to DIN 43670 (air temperature 35 °C / rail temperature of 65° C).
Example description: DBAL40/5/60-220 S
Material: DBAL für Aluminium oder DBCU für Kupfer
Width: 40 mm
Thickness: 5 mm
Connection length: 60 mm
Total length: 220 mm (in the bent state, correspondingly longer in the stretched state).
Shape: S (similar to a sine wave)
We engineer your Expansion Busbars
EMS stands for holistic services
In close cooperation with you, we engineer projects systematically and implement them efficiently.
The focus is on optimizing functionality as well as on infrastructural, production-related and economic aspects. The result is individual solutions that are geared to cost-effectiveness and meet the customer’s requirements down to the last detail.
Getting to know fields of application
We have years of experience in engineering individual solutions for your requirements. In addition, we have the necessary “workbench” to manufacture the associated components on site.