[ve6-sync-u1l1-l2-und-u2l2-l3-280203-oz, 1, en_GB]
Figure 2-30 Connections U1 (L1–L2) and U2 (L2–E)
Figure 2-31 shows the combination for two-pole and single-pole isolated voltage transformer.Since both
voltage transformers have the same transformatio ratio, the secondary voltage differs in amplitude by the
factor √3 and by the phase angle 150° in accordance with the selected connection.
[ve6-sync-u1l1-l2-und-u2l2-e-280203-oz, 1, en_GB]
Figure 2-31 Connections U1 (L1–L2) and U2 (L2–E)
If a power transformer lies between the voltage transformers of the circuit breaker to be synchronised, the
phase angle rotation of a vector group differing from zero must be corrected. A typical application is shown in
Figure 2-32. At parameter 6122 ANGLE ADJUSTM. the rated apparent power is entered.
The transformer vector group is defined from the high voltage side to the low voltage side. The reference
voltage transformer U1 is connected to the high voltage side of the transformer. The phase angle rotation is to
be entered in accordance with the vector group. A vector group numeral e.g. 5 means an angled rotation 5 ·
30° = 150°. This value is set at address6122.
If the voltage connection U1 is on the system lower voltage side, the extension angle should be set to 360°.
For a transformer with vector group 5 this corresponds to 360° – (5 · 30°) = 210°
Functions
2.2 Paralleling Functions
66 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
To Next Page
Loading...
