User Manual California Instruments
140 CSW Series
retain the normally programmed phase angle relationship. For firmware upgrades, contact
support@calinst.com.
Note that required phase angles and amplitudes are automatically set for dips of 0, 40, 70, 80
and 100% to conform with method (A). For all other dip levels, method (A) can be used by
programming the required phase angles to be used during the programmed dips. The amplitude
and phase angles required to obtain the correct line-to-line voltage dip per method (A) for
standard dip levels of 40, 70 and 80% are embedded in the firmware and conform to table C.2 of
IEC 61000-4-34.
Since all phase programming on the CSW series is referenced to phase A, voltage dip with a
phase angle for A other than 0° are implemented by offsetting all three phases by the required
number of degrees to get phase A at 0°. This is reflected in the actual output settings shown on
the CSW versus the data in table C.2 of the IEC61000-4-34. The actual output settings are
shown in the last 3 columns.
Phase Mapping
The phase rotation on the CSW series is ACB. This means phase A is mapped to L1, phase B is
mapped to L3 and phase C is mapped to L2. The required phase selection letter combination
for the required Line-to-line dip is shown in table C.2 for reference.
IEC Tables CSW Reference
L1 A
L2 C
L3 B
Table 8-17: Phase mapping
To select the desired phase-to-phase dip, select the phase selection as shown in column 8 and
either 80, 70 or 40 % dip level from the IEC411 screen or the Gui. Table C.2
Line to Line Line to Neutral Phase CSW Setting
L1-L2 L2-L3 L3-L1 L1-N L2-N L3-N Selection A-N C-N B-N
100% dip 100 % 100 % 100 % 100 % 100 % 100 % n/a 100 % 100 % 100 %
(no dip) 150° 270° 30° 0° 120° 240° 0° 120° 240°
80% dip 80% 100% 92% 72% 100% 100% AC 72% 100% 100%
L1-L2 150° 270° 41° 14° 120° 240° 0° 106° 226°
80% dip 92% 80% 100% 100% 72% 230 BC 100% 72% 100%
L2-L3 161° 270° 30° 0° 134° 240° 0° 134° 240°
80% dip 100% 92% 80% 100% 100% 72% AB 100% 100% 72%
L1-L3 150° 281° 30° 0° 120° 254° 0° 120° 254°
70% dip 70% 100% 89% 61% 100% 100% AC 61% 100% 100%
L1-L2 150° 270° 47° 25° 120° 240° 0° 95° 215°
70% dip 89% 70% 100% 100% 61% 100% BC 100% 61% 100%
L2-L3 167° 270° 30° 0° 145° 240° 0° 145° 240°
70% dip 100% 89% 70% 100% 100% 61% AB 100% 100% 61%
L1-L3 150° 287° 30° 0° 120° 265° 0° 120° 265°
40% dip 40% 100% 87% 53% 100% 100% AC 53% 100% 100%
L1-L2 150° 270° 67° 79° 120° 240° 0° 41° 161°
40% dip 87% 40% 100% 100% 53% 100% BC 100% 53% 100%
L2-L3 187° 270° 30° 0° 199° 240° 0° 199° 240°
40% dip 100% 87% 40% 100% 100% 53% AB 100% 100% 53%
L1-L3 150° 307° 30° 0° 120° 319° 0° 120° 319°
Table 8-18: IEC 61000-3-34 Table C.2
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