Vacuum Contactors Switch (VCS)
Medium Voltage LS
LS Vacuum Contactors Switch
We have the major technology that others can not catch up.
LS vacuum contactors provide high withstand-current strength and
switching capacity as well as versatile auxiliary functions.
LS medium voltage vacuum contactors using LS vacuum interrupters manufactured
with worldclass technology are type tested in LS PT & T that is accredited high power
test lab by worldclass KOLAS.
LS Tri-MEC vacuum contactors are mainly used for the switching of motors,
transformers, capacitors in AC power lines. They can be installed in multi-stack
cubicles.
A vacuum contactor comprises several assemblies such as switching mechanism
including vacuum interrupters, magnetic actuator, high strength molded front
cover and auxiliary devices. Stable and high operating cycle is executed by the
vacuum interrupters made of high alumina ceramic tube which makes it possible
to degas in a high temperature with excellent mechanical strength.
Actuating is available either at instantaneous or continuous excitation. Functions for
safety in connecting and disconnecting are also provided.
Operation conditions
Ambient temperature : -5 to 40℃
Maximum temperature of 24-hour mean : 35 ℃
Altitude : 1000m
Humidity : 24-hour measured average - max. 95% RH
1 month measured average - max. 90% RH
Applied standards
IEC Pub. 60470, IEC 60282-1, JEM 1167, KEMC 11
Up-graded performance
Rated short-time current 6.3kA
[ 6.3kA ]
Performance is up-graded to rated short-time current 6.3kA/1sec.
and switching capacity 4kA according to IEC60470.
Short-circuit protection
[ 40kA ]
Power fused type vacuum contactors, in-house tested according to IEC 60282-1,
can provide short-circuit protection up to 40kA.
High performance, high reliability
and long service life
LS vacuum interrupters that comply with
IEC, ANSI and NEMA standards are
manufactured by the process of brazing
and degasing together in a high
vacuum furnace to assure high reliability.
Superior mechanical strength and
degasing
Providing long service life and suited for
frequently operating purpose due to
using high alumina ceramic tube and
degasing in a high temperature.
High speed interruption and short
arcing time
It has fast recovering characteristic of
vacuum insulation. When opening it
breaks the current at the first current-zero
point to minimize the wearing of
contacts.
Reliable interruption of fault current
LS current limiting power fuse can protect
the devices and systems from fault current
by interrupting within half cycle.
High current such as short-circuit current
cause a fuse blown out due to the
reaction on the material inside of a fuse
within such a short time.
Applied standards
IEC 282-1, DIN 43625, BS 2692, KSC 4612
