Table 8-17: Phase Mapping; Table 8-18: Iec 61000-3-34 Table C.2 - Ametek CSW5550 User Manual

Csw series ac power source

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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.

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

L1-L2

L2-L3

100 %

100% dip

150°

(no dip)

80%

80% dip

150°

L1-L2

92%

80% dip

161°

L2-L3

100%

80% dip

150°

L1-L3

70%

70% dip

150°

L1-L2

89%

70% dip

167°

L2-L3

100%

70% dip

150°

L1-L3

40%

40% dip

150°

L1-L2

87%

40% dip

187°

L2-L3

100%

40% dip

150°

L1-L3

140

IEC Tables