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This information concerns the following elements:
-: "negative" sequence.
0: "zero" sequence.
+: "positive" sequence.
4. Current date and time.
5. Battery charge level.
6.
Sums of the levels of "voltage" harmonics
classified by sequence ("negative" to the left,
"zero" in the centre, and "positive" to the right).
See Note.
7.6 Current expert mode
This sub-menu is not available for a balanced three-
phase connection. For a single-phase connection,
this sub-menu displays the Current expert mode. It
concerns mainly rotating machines. This screen is
used to classify the orders of current harmonics in 3
sequences: the "negative" sequence, the "zero"
sequence, and the "positive" sequence. The
information displayed is read as follows.
1 2 3 4 5
HA5
6
Figure 40: Example of display of current harmonics
according to their effect.
Item Function
1. Reminder of the mode used.
2. Instantaneous frequency.
3.
This information concerns the following elements:
-: "negative" sequence.
0: "zero" sequence.
+: "positive" sequence.
4. Current date and time.
5. Battery charge level.
6.
Sums of the levels of "current" harmonics
classified by sequence ("negative" to the left,
"zero" in the centre, and "positive" to the right).
See Note.
Note: the effects of the sequences are the following:
"Negative" sequence
- Overheating of the rotating machine.
- Loss of torque.
- Mechanical oscillations.
- Higher current draw for a given load.
- Premature ageing of the rotating machine.
"Zero" sequence
- Overheating of the rotating machine.
- Higher current draw for a given load.
- Overload of the neutral.
- Premature ageing of the rotating machine.
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