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