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| Latest News |
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| 2006. Jan - June : |
J-Power Systems shipped approx. 1044km (649miles) of GAP type conductor.
GZTACSR 410mm2
GZTACSR 370mm2
GZTACSR 310mm2
GTACSR 408mm2
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| 2005.Jan-Dec : |
J-Power Systems shipped approx. 2,549km (1584 miles) of GAP type conductor.
GZTACSR 520mm2
GZTACSR 370mm2
GZTACSR 310mm2
GZTACSR 240mm2
GTACSR 325mm2
GTACSR 150mm2
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| 2004.Jan-Dec : |
J-Power Systems shipped approx. 600km (370 miles) of GAP type conductor. Part of those shipments was for the first installation of GAP type in North America under EPRI HTLS project.
GZTACSR413mm2
GZTACSR370mm2
GZTACSR408mm2
GZTACSR410mm2
GZTACSR275mm2
GZTACSR408mm2
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High Temperature Up-rating Conductors |
| In the electrical power industry, deregulation, challenging right-of-way (ROW) issues and increased power demand have simultaneously created situations where increased transmission line capacity is required when existing overhead lines are already at or near capacity. Compounding this problem is the frequent need to upgrade transmission towers also at capacity. Sumitomo Electric U.S.A Inc (SEUSA) has a solution for this dilemma through our High Temperature Up-rating Conductors. SEUSA is the exclusive supplier for J-Power System's High Temperature Up-rating conductors for overhead transmission lines in the U.S. and Canada. |
Example of Gap conductor
(477kcm Hawk equivalent) |
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J-Power System’s Up-rating Conductors
J-Power System
has developed two unique up-rating conductors. They are the Gap
type and Invar type conductor.
More than 5,800km (3,600 miles) of J-Power System Up-rating
conductors have been adopted in commercial overhead T/L in Japan,
Middle East, South East Asia and Europe for the past 30 years. The
Up-rating Conductor is especially useful in grid locations where heavy
wind, ice accumulation, or rolling terrain is a concern.
<Gap
Type> -- supply record as of today : more
than 2,000 conductor miles (3,200km) since1971.
The Gap type conductor has a unique structure, which is described
below. The aluminum wires in the internal layer, closest to the core,
has a trapezoidal cross section which creates a gap between the steel
core and the aluminum layers. This gap is filled with an engineered
material, suitable for operation at temperatures exceeding 200 degree
C.
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Sag Curve for Gap Type and
Invar type
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<Invar
Type> -- supply record as of today
: more than 2,300 conductor miles (3,700km) since 1984.
The main differential characteristic in relation to the conventional
ACSR conductor is that its core is made of High strength Invar
alloy wire, instead of conventional steel wire. Invar wire is
a material composed of an alloy of steel and 36-36% nickel,
whose most important property is the fact that it has a linear expansion
coefficient practically invariable with heat. |
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Please feel free to email gap@sumitomo.com
for additional information regarding specifications, quotations, availability,
and brochures.
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