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Dielectric Strength of Air at Vacuum Pressures |
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This Graph shows the effect of system pressure on the dielectric
strength of air. It is useful for derating electrical components to
be used in vacuum
systems. Note that all ISI electrical products are rated for service
below 10-4 Torr.
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| INTENDED OPERATING CONDITIONS Electrical ratings are determined by various factors, including dielectric strength, geometry and system operating pressure. Please note that all ISI catalog products are electrically rated for operation with one side in dry atmospheric conditions and the other side in a vacuum environment with a maximum system pressure of 1 x 10-4 Torr. We advise that users make allowances for deviations from stated operating parameters and take adequate safety precautions when feedthroughs are operated at high voltages or high currents. |
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