VCS (Vacuum Contactor Switch)

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