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| Vanguard's
Model VBT-80P 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-80P 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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