Threaded Cu Rod Hermetic

The default 80 psi air bubble or vacuum helium leak test shown on most drawings can be increased to much higher pressures upon request for almost all designs along with leak testing with either N2 or helium. Check with PAVE sales engineering for actual maximum or desired pressure test ratings or helium leak test rates for a particular design. PAVE-Seals seal in either pressure or vacuum direction, though pressure ratings will vary by pressure direction for high pressures.

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Threaded Cu Rod Hermetic

Most PAVE hermetic seals are bi-directional seals for vacuum or pressure.

Low and Hi-current/voltage terminal seals for low or high pressures and vacuum use. For bronze stud connectors for joining a threaded stud to cable instead of brass ring or spade terminals, please contact those manufacturers such as Hubbell Power Systems, Travis Pattern & Foundry (Bronze and Aluminum Stud Connectors), or others for the appropriate stud and cable size substation connectors.

Current capacity is affected by many different factors, including how much heat is carried away from the conductor. This would be theoretically more limited if there is less air surrounding the conductor (lower pressure), but a curve showing this would have to be generated with a specifically controlled experiment in the actual customer's application. The current capacity has no relation to the pressure or vacuum level. The only direct relation that the pressure or vacuum level has to an electrical characteristic is the voltage rating. However, we don't have any data to develop a curve that shows that relationship.

See http://www.powerstream.com/Wire_Size.htm for more information on amperage load carrying capacities and AWG wire sizes and metric wire gauges.