Pressurised chamber

Unique pressure chamber for testing components under pressure

Things are getting exciting

To test the quality of components subjected to extremely high electrical loads, they are subjected to a voltage of 200,000 volts under positive pressure in the pressure chamber manufactured by Albrecht Edelstahltechnik on behalf of the customer.

Quality and safety

The features

Safety and reliable processes are among the highest priorities in industry. This is particularly true when high electrical voltages are involved and it must therefore be ensured that the machine operates as planned, so as neither to endanger users nor to compromise the quality of the machine.

To test the resilience of components subjected to high electrical stress, Albrecht Edelstahltechnik has manufactured a pressure chamber, tailor-made to a customer’s specifications. Within this chamber, several components can be tested in parallel under overpressure up to 200,000 volts to assess their partial discharge behaviour. Partial discharge is an indicator of the quality of a component’s insulation. This ‘discharge’ is measured in coulombs (1 C = 1 A × 1 s). Good insulation shows no discharge.

The unique pressure chamber is made of boiler-grade steel. Inside it, the electric field generated by the voltage is controlled. The measurement values and process parameters are recorded by a computer-controlled system. The pressure chamber is housed in a separate room. A wide range of safety-related considerations have been incorporated into the chamber’s design. Thanks to the quick-release fastener and the large internal space, it is possible to test specimens cost-effectively whilst maintaining a high standard of quality.

The realisation of such a high-quality and optimised pressure chamber requires the comprehensive expertise and high degree of in-house manufacturing capability that we, as a high-performance plant engineer and specialist in pressure vessel construction, are able to offer our customers. Working closely with you, we develop the solution that best suits your needs in-house as a one-stop service – efficiently, with minimal coordination issues and backed by a valuable all-round service.

Technical data

• Partial discharge testing up to 200,000 volts and a partial discharge value < 2 pC
• Telescopic test specimen support for easier loading of the test chamber with components to be tested
• Bayonet quick-release fastener with manual operation
• Useful volume: 1,100 litres
• Unladen weight: 1.5 tonnes
• Designed for over 1,000,000 load cycles
• Construction: boiler-grade steel with a wall thickness of 15 mm
• Coating: anti-corrosion system on the outside; electrically conductive paint on the inside for better dissipation of the electric field
• Operating pressure: 8 bar under dynamic load
• Pressure test with water at 11.8 bar
• Field-controlled area around the voltage supply
• All components at ‘earth’
    potential