PTE-300-V
Sheet 34
4.2.7. DYNAMIC TESTS: STEP TO 2
ND
VALUE
The PTE-300-V allows the operator to make dynamic tests, by allowing jumps (steps) from one value
to another, whether it is from higher to lower or vice versa. This is very useful, for example, when
performing dynamic characteristic tests. This is achieved as follows:
1. Press the key
. In the display will appear the reading “0000” or the 2
nd
value previously
recorded. Select with the rotating knob the desired value to acts as 2
nd
value.
2. Press again the key
. The display will show the actual value that is the 1
st
value. Turn
on the output if this is off.
3. Press the key
. This will produce instantaneously the step from the actual value to the
2
nd
selected value. At the same time there is a signal sent to
Start Chrono
output, to start an
external timer if desired. Furthermore, the LED located above this press key indicates that the
2
nd
value is in the output.
IMPORTANT: When the unit is in this situation the displayed
value cannot be changed even if the rotating knobs are turned.
When this key
is pressed again, the step will be the opposite, which is from the 2
nd
value
to the 1
st
one. At the same time, there is a signal sent to
Start Chrono
output. The LED will go off
indicating the output is at the 1
st
value.
NOTA: You can select a 2
nd
value even when the corresponding output is on. In this
situation, though the display is not showing the actual output value, this remains
in the output.
4.3.
PHASE ANGLE SELECTION
This section describes in detail the use of the phase shifter incorporated in the PTE-300-V, as well as
the
External Phase and Frequency Reference
.
The display in this section is indicated in degrees (0-359.9) between the output and the reference
choose (Freq. Ext., Line, Bus) in a ANTI-CLOCKWISE sense as follows
4.3.1. PHASE ANGLE SENSE
PTE-300-V allows two phase angle senses: AMERICAN or EUROPEAN (ordered by the client).
Whatever it is selected, the initial unit status will be a balanced three phase system, turning ANTI-
CLOCKWISE.
