Combination and removal of phases
Let us have 4 phases: F1, F2, F3 y F4
and the following valuation of a group of safeguards
|
|
F1 |
F2 |
F3 |
F4 |
|
group |
L1 |
L1-L2 |
L1-L3 |
L1-L3 |
|
S1 |
L1 |
|
|
|
|
S2 |
L1 |
L2 |
|
|
|
S3 |
L1 |
L2 |
L3 |
|
If we combine F2 + F3, the values in phase F2 that are not modified in phase F3, are copied in phase F3:
|
|
F1 |
F2 |
F3 |
F4 |
|
group |
L1 |
L1-L2 |
L1-L3 |
L1-L3 |
|
S1 |
L1 |
|
|
|
|
S2 |
L1 |
L2 |
L2 |
|
|
S3 |
L1 |
L2 |
L3 |
|
So, we may now remove phase F2 without losing information:
|
|
F1 |
F3 |
F4 |
|
group |
L1 |
L1-L3 |
L1-L3 |
|
S1 |
L1 |
|
|
|
S2 |
L1 |
L2 |
|
|
S3 |
L1 |
L3 |
|