PTE-50-CET
Sheet 37
1. Selected value in channel 1 (CH1): 000.0º
2. Selected value in channel 2 (CH2): 240.0º
3. Selected value in channel 3 (CH3): 120.0º
b) AMERICAN SENSE:
The display shows, in sexagesimal degrees (0-359.9), the phase angle between the
OUTPUT and the selected reference source (Freq., EXT, LINE and BUS), considered
positive when this is CLOCWISE, that is:
Figure 15:
Phase Angle Selection (American)
When the unit is turned on, the phase angle selection sets the following default states and
values:
1. Selected value in channel 1 (CH1): 000.0º
2. Selected value in channel 2 (CH2): 120.0º
3. Selected value in channel 3 (CH3): 240.0º
4.3.2. DYNAMIC TESTS: STEP TO 2
ND
VALUE
The PTE-50-CET 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 testing out-of-step generator protective relays. 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
phase angle cannot be changed even if the rotating knobs are turned.
PTE-50-CET
output
Displayed angle
Reference source
(0º)
Positive degrees
