SVT – Step Voltage Test
After selecting the SVT function with the function key, the operator must select
the test maximum voltage with the ±500 V keys. In this function, the equipment
allows the selection of maximum voltages only from 500 V up to 5000 V steps.
If the operator selects a halfway voltage between two 500 V steps by using the
±100 key, the equipment will carry out the test from the 500 V up to reaching an
equal voltage value or a value that is straight below the 500 multiple value.
During the first minute the generated test voltage is of 500 V. This voltage is
incremented in 500 V steps until it reaches the maximum programmed voltage.
Each voltage step is applied during one minute, and the resistance is measured
before going up to the following voltage. The test result is calculated with this
formula:
After the test is finished, the value can be recovered by pressing the
key.
Battery status check
During the measurement, it is possible to check the battery status. In order to
do that, this key must be pressed and the indication displayed must be
checked. If the charge is enough, it will read "BAT OK" or "LOW BAT", should
it be recharged. The analogue bar-graph will give an approximate idea of the
remaining charge percentage (at least 20% is required for a normal operation).
When the battery charge reaches the normal operation minimum value, the
message LO BAT appears automatically in the area where the test tension
value is indicates, alternating it every 1 second.
R
SVT
=
V MAX
R
500
16
SVT / PI