PTE-50-CET
Sheet 34
To return to the current mode press the same key again for more than 2 seconds.
4.2.3. OUTPUT RANGE SELECTION
The following output ranges are available:
•
Current mode: 0.33 / 8 / 25 / 50 A.
•
Voltage mode: 6.25 / 150 V.
To select any of these ranges press the
TAP I/V
key. The display will automatically change. In case
we have selected a value and this is greater that the new selected range, the value will set to the
maximum value in the selected range.
The active range is that which has its corresponding LED lit.
NOTE:
To change to the 50 A range, you must do the same, but you have to connect the cables
to the 50 A taps. In case you have changed to this 50 A range and the cables remain in
the 25 A taps, the actual values injected to the relay will be half the displayed values.
4.2.4. REFERENCE SOURCE SELECTION
When the unit is turned on, it is synchronized to the MAIN VOLTAGE SUPPLY. This is indicated with
the LINE LED on. If you want to change this reference you must do the following:
1. Press the SYNC key. The unit will pass to the reference BUS-PTE, which is indicated by the
corresponding LED marked BUS. This implies that the reference is the BUS-PTE, with any
other unit of the PTE range. If the units are not interconnected (BUS-PTE is not connected or
there is no
Reference Master
selected) the LED indicator will flash slowly indicating that there
is no reference. If there is no reference in the BUS and the output is turned on, the unit will
synchronize automatically to the last valid reference (LINE).
2. Press again the SYNC key. The unit will pass to
External Reference
, which is indicated by the
corresponding LED marked EXT. This implies that the reference is now the signal connected to
the
External Phase Reference Input
, introduced in the taps
Ext. Phase Reference
. If there is no
signal in these taps the LED EXT will flash slowly indicating that there is no reference or that it
is not suitable.
If there is no reference and the output is turned ON, it will synchronize to tha last valid
reference. The same occurs if there is a valid external reference and it disappears.
3. Press again the SYNC key. The unit will pass to the LINE reference, which is indicated by the
corresponding LED marked LINE. This implies that the reference is the main voltage supply.
These changes can be made while the output is ON.
4.2.5. OUTPUT VALUES SELECTION
This is achieved by turning the rotating knob and the digit selector key. The actual value selected is
shown on the display, whether the output is ON or OFF. The selected value shown in the display
