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BUSINESS
The existing Ruopigen substation had
been in operation since 1965 and has now
been entirely replaced with a gas-insulated
switching unit. With an order amounting
to 1.5 million francs for medium and
high voltage units, PFISTERER IXOSIL was
heavily involved in the rebuild. With a
large part of the order relating to cable
fittings including assembly, unlike a relatively
small portion of the order being for
cables, the order was perfect for IXOSIL.
Another factor was that CONNEX connectors
were built into the GIS system and we
were able to bring a further advantage to
the table compared to our competitors, by
using our own plugs. To top it all we fitted
our IXOSIL outdoor sealing ends onto the
outdoor unit.
Showcase project for both partners
It was clear back in the planning phase
that the Ruopigen substation should be a
showcase for both CKW and IXOSIL. So the
2 / 2009 CONNECT 8
PFISTERER IXOSIL AG: CKW supply station opened
CKW’s Ruopigen substation becomes a showcase
A total of 48 Connex size 5s were installed in 16 SF6 fi elds of which 3 Connex size 5S were not yet connected.
In the last two years the Switzerland based energy company, Centralschweizerischen
Kraftwerke (CKW), has invested over 19 million CHF
in restoring the Ruopigen substation in Littau. Not only did the restoration
reduce it to a quarter of its previous surface area (800 m 2 )
but, by implementing the most technologically advanced network we
could, it should also secure the system‘s high operating safety.
entire team worked rigorously on creating
the best-looking and most practical designs
and fixing solutions for the cable vault.
High quantity, efficiently assembled
From October 2008 to May 2009 two
teams of up to four IXOSIL engineers worked
around 2‘570 hours to install the complete
cable system. We made excellent
progress, due in part to a mild autumn /
early winter and the outdoor unit’s perfectly
built pylon structures. The number
of fittings helped new engineers attach
their parts.
Even our office staff used the opportunity
to take a picture of the work taking
place before their very eyes.
After the high voltage test, Project Manager
Severin Locher handed over a perfectly
running unit to our customer CKW.
The unit was seen by both sides as a great
success and that is clear for all to see.
Petra Arnold
View of the cable vault, fi tted with 5’200 m
630/95 mm 2 , 600m 1000/95 mm 2 and 210 m
240/95 mm 2 Nexan’s XKDCuT cables, 102 m bonding
cables, 420 m fi xing clamps, 147 anchorage clamps and
96 cable ties (photos: CKW/IXOSIL).
123 kV straight joints were used.
Protection from the weather during work.
The outdoor unit’s 45 ESS123-C31 pylons.