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| Vanguard's
Model VBT-80 is a microprocessor-based,
portable 80 kV dc Vacuum Bottle Tester. This
tester is light-weight, portable, and
designed for testing circuit-breaker vacuum
bottles in the field and at the shop.
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| The
VBT-80 permits users to select test voltages
from a range from 10 kV dc to 80 kV dc in 5
kV steps. Once the test voltage reaches its
preset level, a dwell timer holds this
voltage at that level for the preset time
duration. After the dwell time has elapsed,
the test voltage returns to zero. The
high-voltage test dwell time can be set from
5 seconds to 2 minutes. A flashover
condition (i.e., a bottle failure) is
indicated by a "Failure" indicator
on the front panel.
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