Hermetic Seal Electrical Terminal Pin Rod Stud Seals
Copper or brass hermetic terminals are for the highest electrical ampacity or nickel, aluminum or stainless steel threaded or non-threaded rod pin hermetically sealed feedthrough terminals stud seals are available in a wide variety of styles both standard and custom designed for both low and high operating pressures, vacuums up to 10^-8 Torr, temperature ranges between -200C to 200C, voltages up to 32kV and amperages to 1000 amps. See below standard design hermetic terminal drawings and new custom seal designs can also be ordered.
Higher leak test pressures are available upon request for most designs with leak testing with either nitrogen or helium, as the 80 psi or vacuum leak test or other pressure test value shown on many drawings is only a default leak test value and not usually a maximum pressure test rating which can be much higher. Most designs will also seal bi-directionally for either pressures or vacuums. Check with PAVE sales engineering to request higher pressure leak testing or pressure testing in opposite direction shown from the drawings. Cutting the wire length shorter has no effect on the seal integrity.
Higher voltage testing is available upon request for most designs.
Lower temperature ratings can be achieved in most cases by simply changing the o-ring compound to an o-ring with a lower operating temperature rating. Check with PAVE sales engineering or an o-ring supplier for recommended alternate o-ring compounds.
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PAVE DESCRIPTION CODES CHART
|Installation Port||Total Terminals or Studs||PAVE Description Codes, Housing & Wires||AWG #||Suggested Max Amperage +600V||DRAWING #|
|1⅞" o-ring face seal||1||VS26-SS-150-1-.75CU-3.7-3.7||0.75"||400||1565|
|⅜" NPT||2||PT6-B-150-2-NICKEL FILAMENTS||20||7||1307|
|⅜" NPT||2||PT6L-SS-80-2-TE18 probe||18||10||1340|
|⅜" NPT||2||PT6L-SS-200-2- ALARM PROBE ASY||24||3565|
|½ SAE||1||SO8-SS-150HV-1-.063NI-.43-.67||0.060" diameter nickel||4349|
|9/16 "-20 UN-2A||1||SO9-SS-150-1-.25CU-1-1.75||0.25"||94||4212|
|9/16 " SAE||1||SO9-SS-150-1-.39CU-1-1||0.30" or 7.62mm||100||4051|
|¾" SAE o-ring||1||SO12-SS-200HV-.25CU-.85-.85||0.25"||94||4721|
|½" o-ring face seal||1||VS8XL-AL-80HV-1-.08CU-1.3-.5||12||25||2053|
|¾" o-ring face seal||1||VS12-SS-200-1-.25CU-3-3||0.25"||94||0916|
|1" o-ring face seal||1||VS15-SS-150-.38CU-1-1||0.38"||200||1444|
|1" o-ring face seal||1||VS15-SS-80-.38 SS Tube-1-1||0.38"||0||1568|
|1¼" o-ring face seal||1||VS18-SS-200-.50CU-2.2-2.6||0.50"||300||917|
|1½" NPT||1||PT24-SS-200HV-1-.75CU-3.6-7.9||¾" copper rod||400||4743|
|2½" o-ring face seal||1||VS32DSL-SS-200HV-1-1CU-8-4||1.25"||800 amps||3344|
|2½" o-ring face seal||1||VS32-SS-200HV-1-1.5CU-4.25-3||1.50"||1000 amps||3296|
|3½" ASAS flange||1||FL2498-PS-200FR-1.50Ni-7-16||1.5"||700||2477|
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.
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PAVE Technology Co.® is located 8 miles south of the Dayton Intl. Airport (DAY) and the nearby US Air Force Museum.