Electric Equipment General Catalog

Load Break Switches (LBS)Load Break Switches (LBS)

VTL Type

D-6

Auxiliaries &Devices

D-8

InstallationType

D-10

CircuitDiagram

D-12

OutsideDrawing

D-13

Fuse SelectionStandard

D-15

OfficialAuthentication TestExemption Certificate

D-17

Contents

Different grade of LBS

[Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class][Only VITZROTECH’s LBS is the only E3 class]

E3 class capacitywith 100A fusecombination

E3 class capacitywith built inlightning arrester

Performance comparison by classaccording to IEC60265Other companies

VITZROTECH LBS is the first and best E3 class LBS in the country.

D-2 VITZRO TECH LBS

Other

Other

E3 class capacity with100A fuse combination & built in LA

Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!Upgraded New Model on a Differentiated Level!

According to the development of 100A fuse-combined LBS that requires a performance three times higher than the existing 63A device, the protection range for a transformer was extended up to 100A.

Maximum fuse capacity of fuse combination LBSTransfer current breaking capacity of load

switch according to the fuse capacity

Other

VITZRO

Other

VITZRO

D-3Electric Equipment General Catalog

Developed the country’s first LA-embedded LBS

Developed type tests for all types, in E3 class

Passed 100A fuse combination type test

Developed the country’s first LA-embedded LBS

Developed type tests for all types, in E3 class

Passed 100A fuse combination type test

All you need is the LA-Embedded LBS!

[[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]][[ Korea’s first LA-Embedded LBS! ]]

LA Embedded LBS

The size of the switch panel can become smaller asadditional space for LAs is not necessary, so that costreduction can be realized.

■■Insulator Material

D-4 VITZRO TECH LBS

Excellent electrical and mechanical strength and

arc-resistance of the support insulator formed

with polysil (our patented product) and built-in LA,

and epoxy puffer insulator minimize the influence

to other devices

in the panel.

[[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]][[ LA inside LBS ]]This product is the same size as existing LBS because LA is Embedded in the support insulator.

LLAA--eemmbbeeddddeedd LLBBSS

2244kkVV 4400kkAA

LA embedded insidethe support insulator18kV 2.5kA

●Dual contact structure by main blade and

arcing blade prevents the damage on the

main blade

●Pressurized air discharge maximizes the

instantaneous arc extinguishing capacity.

■■Main Circuit SectionArcing blade

Main blade

Arc chute

Fixed contact

Puffer insulator (Epoxy)

D-5Electric Equipment General Catalog

D-6 VITZRO TECH LBS

New E3 class High-Performance Model

Type LBS basic LBS+LA embedded LBS+fuse LBS+LA+fuse

Name VTL VTL VTL VTL VTLF VTLF VTLF VTLF

24/630A1 24/630M1 24/630A1-LA1 24/630M1-LA1 24/630A1 24/630A1 24/630A1-LA1 24/630A1-LA1

Operation type Auto Manual Auto Manual Auto Manual Auto Manual

Fuse-mounted No Yes

LA-mounted No Yes No Yes

Rated voltage 24kV

Rated current 630A Switch 630A/ Fuse 100A

Switch rating (IEC standard) E3, M1 Class

Pole 3 poles

Rated frequency 60Hz

Rated short-time withstand current 20kA/1sec -

Rated making current 52kAp 104kAp

Power frequency To ground 50kV/min

withstand voltage Same phase 60kVmin

Lightning impulse To ground 125kVp

withstand voltage Same phase 145kVp

Load current630A 100 times

31.5A 20 times

Loop current 630A 20 times

Cable 31.5A 10 times

Charging current 9.45A 10 times

Line charging current 1.5A 10 times

No-load switching 1,000 times

Rated breaking current - 40kArms

Rated transfer current - 1250Arms

Rated fuse current (Fuse-mounted type) N/AUp to 100A

1/5/10/16/20/25/31.5/40/50/63/80/100

Rated control voltage 110Vdc - 110Vdc - 110Vd - 110Vdc -

Rated control current 5A - 5A - 5A - 5A -

Manual operation cable length Standard: 2.0m (Option: 1.5/2.6m)

Weight 68kg 64kg 74kg 70kg 92kg 88kg 98kg 94kg

)* LA For LA-embedded type

LA specification (LA-embedded type) 1) Rated voltage : 18kV 2) Nominal discharge current: 2.5kA 3) Rated frequency: 60Hz4) Power frequency withstand voltage: 50kV/1min 5) Lightning impulse withstand voltage: 125kVp

Applied standard IEC60265-1, IEC62271-105, IEC60282-1

Currentswitchingtimes

Basic type·Embedded LA

Fuse-combrination type·Embedded LA ·100A fuse applied

KML Type Auxiliaries &Devices

InstallationType

CircuitDiagram

OutsideDrawing

Fuse selectionStandardVTL Type

D-7Electric Equipment General Catalog

Load Break Switches

D

Load Break

Sw

itches

KML Type-12kV Manual Operation-onlyKML Type - 12kV Manual Operation-only

Ordering codes

Fuse Yes Fuse No

F

N

Fuse-mountedVTLKML

Type

F

Auto Manual

AM

Operation type

A LA A

DC110VAC110VAC220V

ABC

Operating voltage

A

1.5M1.8M2.0M

ABC

Manual operation cable length

Specify therated current

when necessary

Fuse capacity

100VTL

12 kV

12KML-M

3 Pole

630A

50/60Hz

32kV

85kV

20kA

52kA

630A

630A

31.5A

60ms

Manual

-

-

62.5kg

Standard: 2.0m (Option: 1.5/2.6m)

Rated voltage

Type

Pole

Rated current

Rated frequency

Power frequency withstand voltage

Impulse withstand voltage

Rated short-time current (1s)

Rated short circuit making current

Load current

Loop current

Charging current

Opening time

Operation type

Operating voltage

Operating current

Weight (Without fuse)

Manual operation cable lengt

Current switchingcapacity

LA NoLA Yes

-

-

LA-mounted

* KML type is dedicated to 12kV manual operation.

Air Circuit Breakers

D-8 VITZRO TECH LBS

2.3

24442

4.1

3.1

78

65

VTHF24001 1

VTHF24005 5

VTHF24010 10

VTHF24016 16

VTHF24020 20

VTHF24025 25

VTHF24032 31.5

VTHF24040 40

VTHF24050 50

VTHF24063 63

VTHF24080 80

VTHF25100 100

Model name

Rated current Rated maximum Rated minimum Weight

In breaking current breaking current [A] [kA] [A]

[kg]

24/25.8kV Fuse Link

40 5×In

56

Dimension

e[mm]

d[mm]

Rated voltage

[kV]

25.8

Example of fuse-mounted LBS installation

Striker

This one line diagram is an example installation where the fusecombination LBS applicable. The rated current of the power fuseis chosen considering the capacity of power-receiving transformerand the protection coordination with OCR.VITZRO LBS is equipped with a fuse combined trip device thatautomatically trips when one fuse is melted due to short circuit orovercurrent, so that it operates quickly and accurately in case offault in any phase.

VTL Tyle KML Type InstallationType

CircuitDiagram

OutsideDrawing

Fuse selectionStandardAuxiliaries& Devices

Incoming

LBS with Fuse combination

WHM

COS or PF

COS, PF or CB

Load Load Load

D-9Electric Equipment General Catalog

Load Break Switches

D

Load Break

Sw

itches

Auxiliaries& Devices

Electrically-Driven Operating UnitThis is used for remote On/Off control. The standardrated voltage is DC 110V, but AC 110V/AC 220V arealso available by individual order.

Manual Remote Operating Unit This is used for manual operation at the panel door,and comprises a cable and a manual handle.

Fuse Combined Trip DeviceThis device provides trip operation to prevent openphase operation in case one fuse out of three fuses ismelted due to a fault, which is clear and quick usingmechanical links.

Fuse Combined Indicator Contact1a contact is provided to enable the remotemonitoring of fuse melting. (F1-F2)

Auxiliary Relay This relay operates according to the main bladeoperation, and is used in indicating the switch status andcontrolling the switch.

CounterThis is a switching counter that indicates the number ofswitching times of LBS

Shunt Trip DeviceThis device is equipped with a shunt coil to facilitatequick trip operation by the signal from the relay in caseof fault.

P N C T F1

A1 A3 B1 B3 F2

A2 A4 B2 B4

Auxiliary relay

Counter

Fuse melting indicator contact

Shunt trip device

Fuse melting trip device

Manualhandle

Electrically-driven

operating unit

Remote operation cable

D-10 VITZRO TECH LBS

Manual remote operating unit

LBS Main Body

Fixed frame

Above R150

Manual handle

Cable fixture

(Switch cabinet door)

Cable1. The standard length is 2.0m, and 1.5/2.6m can also be manufactured by order.2. The cable requires sufficient radius curvature above R150 for good operation.3. The manual On/Off operation by cable is conducted by single direction turn (right turn).4. Fix the cable with cable ties to the inside wall of switch cabinet considering the insulation distance.5. Use the separately provided exclusive handle for manual operation.

“-----“ corresponds to the horizontal

installation.

* Check if the surface on which the device is installed is flat, to prevent the distortion of LBS

Horizontal Installation

Vertical installation

Basic type Fuse-mounted

Circuit diagram forinstallation

VTL Tyle KML Type Auxiliaries &Devices

CircuitDiagram

OutsideDrawing

Fuse SelectionStandardInstallation Type

D-11Electric Equipment General Catalog

Load Break Switches

D

Load Break

Sw

itches

Circuit

Names by section

❶ Base Frame

❷ Support Insulator

❸ Load Terminal

❹ Arcing Blade

❺ Main Blade

❻ Line Terminal

❼ Arc Nozzle

❽ Fixed Main Contact

❾ Fixed Support Insulator

❿ Operating Rod

Operating Mechanism

Manual Operation Cable

Geared Motor

Manual Handle

Support Insulator

Load Terminal

Current limiting Power Fuse

Fuse Trip Device

❹ ❼

❸

❷

❻❺

❽❾

❿

❶

❶

Circuit

D-12 VITZRO TECH LBS

Automatic (Electrically-driven)

Control Circuit / Automatic

·P : AC 110V / AC 220V (＋)

·N : AC 110V / AC 220V (－)

·C : CLOSE

·T : TRIP

·SC : Trip Coil

(DC 110V / DC 220V)

·M : Motor for closing

DC 110V / DC 220V)

·89X : Auxiliary relay for closing

·P : DC 110V (＋)

·N :: DC 110V (－)

·C : CLOSE

·T : TRIP

·SC : Trip Coil

·M : Motor for closing

·89X : Auxiliary relay for closing

AC 110V / AC 220V

DC 110V

VTL Tyle KML Type Auxiliaries &Devices

InstallationType

OutsideDrawing

Fuse SelectionStandardCircuit Diagram

Manual

Cont

rol v

oltag

e(DC

110V

)

Manual Combination

Manual

Cont

rol v

oltag

e(DC

110V

)

Manual Combination

D-13Electric Equipment General Catalog

Load Break Switches

D

Load Break

Sw

itches

Outside Drawing

VTL… (E3 class) New Model

Basic Type/LA-Embedded Type (Auto/Manual)

Fuse-Mounted Type/LA-Embedded Type (Auto/Manual)

Outside Drawing

D-14 VITZRO TECH LBS

12KML-M

12kV, Manual-Exclusive

Installation dimension

Basic type and LA-embedded type (12KML-M) Fuse-mounted type and LA-embedded type

VTL Tyle KML Type Auxiliaries &Devices

InstallationType

CircuitDiagram

Fuse selectionStandardOutside Drawing

D-15Electric Equipment General Catalog

Load Break Switches

D

Load Break

Sw

itches

Fuse Selection Standard

Fuse Selection Standard by UsagePower fuse for transformer circuit protection

<Detailed selection condition>1. The inrush current of transformer was estimated by assuming 10 times the transformer full load current for 0.1s.2. The rated fuse current was estimated so that 1.5 to 2 times the transformer rated current could be continuously conducted.3. The transformer fuse was selected on the assumption that it could break in less than 2 seconds at 25 times the transformerrated current in case of secondary short circuit.

Fuse Selection Standard

Rated voltage Rated capacity of transformer [kVA] 3ØØ Fuse link

[kV]

7~15 VTHF24001

36 ~ 76 VTHF24005

75 ~ 158 VTHF24010

141 ~ 276 VTHF24016

176 ~ 344 VTHF24020

220 ~ 431 VTHF24025

264 ~ 540 VTHF24032

466 ~ 990 VTHF24040

600 ~ 1238 VTHF24050

743 ~ 1585 VTHF24063

990 ~ 1981 VTHF24080

1585 ~ 2641 VTHF25100

2251 ~ 3301 VTHF24125

3522 ~ 4226 VTHF24160

24

PF

TR