AC power supply PCR-LE2 series

Appendix


Line voltage dip

The following example shows how to set line voltage dips (short two phases: 70% residual voltage).

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STEP

0

1

2

3

ACVOLT [V] U phase AC voltage

116.6

91.6

116.6

116.6

RAMP (ACVOLT) U phase voltage ramp

OFF

OFF

ON

OFF

ACV V[V] V phase AC voltage

116.6

116.6

116.6

116.6

RAMP (ACV V) V phase voltage ramp

OFF

OFF

ON

OFF

ACV W [V] W phase AC voltage

116.6

91.6

116.6

116.6

RAMP (ACV W) W phase voltage ramp

OFF

OFF

ON

OFF

TIME [ms] Step time

100

100

100

100

S.PHASE [deg] Starting phase angle

FREE

FREE

FREE

FREE

E.PHASE [deg] Ending phase angle

FREE

FREE

FREE

FREE

U PHA.OFFS [deg] U phase offset

0

350

0

OFF

RAMP (U PHA.OFFS) U phase ramp

OFF

OFF

LAG

OFF

U-V PHAS [deg] U-V phase difference

120

OFF

OFF

OFF

RAMP (U-V PHAS) V phase ramp

OFF

--

--

---

U-W PHAS [deg] U-W phase difference

240

250

240

OFF

RAMP (U-W PHAS) W phase ramp

OFF

OFF

LEAD

---

PHAS. CNG sudden phase change

OFF

OFF

OFF

OFF

In step 1, we will suddenly change phases, and in step 2, we will sweep phases. For sudden phase changes, we normally do not use the U phase offset, but because we will use both sudden phase change and phase sweep in this example, we will set the sudden phase change using the U phase offset.

In step 1, we set the U-W line voltage to 70%.

We set the U and W phase voltages to 91.6 V (ramp off), the U phase (U phase offset) to 350° (360° - 10°), and the W phase (U-W phase difference) to 250° (240° + 10°). Because these will be sudden changes, the U and W phase ramp settings are set to off.

In step 2, the U-W line voltage is varied from 70% to 100% over the duration of the step (1 second).

We set the U and W phase voltages to 116.6 V and the voltage ramp to on.

To sweep the U phase clockwise to 0°, we set the U phase (U phase offset) to 0° and set the ramp to LAG.

To sweep the W phase counterclockwise to 240°, we set the W phase (U-W phase difference) to 240° and set the ramp to LEAD.

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AC power supply PCR-LE2 seriesAC power supply PCR-LE2 series
Appendix