34/78 SUREWAVE SFC USER MANUAL
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Input termination side
It is possible to order the SureWave SFC with the input termination enclosure on the left or the
right side (when viewed from front). This selection is made to best suit the layout of the installa-
tion location.
Note, termination enclosures are only available for > 750 kVA models.
Input termination side
Code
Left side
LH
Right side
RS
Table 7-10: SureWave SFC input termination side type code
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RFI configuration
To adequately suppress radio frequency interference, the SureWave SFC must be RFI referenced
to ground in one end, either input or output side. The recommended standard option for the
SureWave is to be fed from a TN network supply using an output transformer and having RFI
ground reference on the input side (rectifiers), which means the output side (inverters) is RFI
floating. This will also ensure a clean (common-mode noise filtered) 3-phase voltage supply to
the auxiliary supply.
As an option, the SureWave SFC’s incoming supply can be from a network supply different to TN
if required e.g., IT network using an input transformer, in this configuration the output side of
the SFC (inverters) needs to be RFI grounded, and the auxiliary supply needs to be externally
feed from a 3-phase supply clean of common-mode noise.
Note, for nonstandard use of the SureWave SFC in IT networks earth fault detection device is re-
quired.
RFI configuration
Code
Output side (inverter) is RFI floating, input side
(rectifier) RFI grounded
F
Output side (inverter) is RFI grounded, input side
(rectifier) RFI floating
E
Table 7-11: SureWave SFC RFI configuration type code
