E3 class capacity with 100A fuse combination & built in LA
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 LBS
Transfer current breaking capacity of load switch according to the fuse capacity
Other
Other
VITZRO
VITZRO
Electric Equipment General Catalog
D-3
All you need is the LA-Embedded LBS!
LA Embedded LBS The
size of the switch panel can become smaller as additional space for LAs is not necessary, so that cost reduction can be realized
Insulator Material
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.
D-4
VITZRO TECH LBS
This product is the same size as existing LBS because LA is Embedded in the support insulator.
LA embedded inside the support insulator 18kV 2.5kA
Main Circuit Section
Arcing blade
Dual contact structure by main blade and arcing blade prevents the damage on the
Main blade
main blade
Arc chute
Pressurized air discharge maximizes the instantaneous arc extinguishing capacity.
Fixed contact Puffer insulator (Epoxy)
Electric Equipment General Catalog
D-5
New E3 class High-Performance Model
Fuse-combrination type
Basic type
Embedded LA 100A fuse applied
Embedded LA
Type
LBS basic
Name Operation type
LBS+LA embedded
VTL
VTL
VTL
24/630A1
24/630M1
Auto
Manual
LBS+fuse
VTL
24/630A1-LA1 24/630M1-LA1
Auto
Fuse-mounted
LBS+LA+fuse
VTLF
VTLF
24/630A1
24/630A1
Auto
Manual
Manual
VTLF
24/630A1-LA1 24/630A1-LA1
Auto
No
LA-mounted
No
VTLF Manual
Yes Yes
No
Rated voltage
Yes
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 630A
100 times
31.5A
20 times
630A
20 times
31.5A
10 times
Charging current
9.45A
10 times
Line charging current
1.5A
10 times
Load current
Loop current Cable
No-load switching
1,000 times
Rated breaking current
-
40kArms
Rated transfer current
-
1250Arms
Rated fuse current (Fuse-mounted type)
Up to 100A
N/A
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
-
98kg
94kg
Manual operation cable length Weight LA specification ) (LA-embedded type) Applied standard D-6
VITZRO TECH LBS
Standard: 2.0m (Option: 1.5/2.6m) 68kg
64kg
74kg
70kg
92kg
88kg
* LA For LA-embedded type 1) Rated voltage : 18kV 2) Nominal dis charge current: 2.5kA 3) Rated frequency: 60Hz 4) Power frequency withstand voltage: 50kV/1min 5) Lightning impulse withstand voltage: 125kVp IEC60265-1, IEC62271-105, IEC60282-1
Load Break Switches
KML Type - 12kV Manual Operation-only KML Type-12kV Manual Operation-only
Air Circuit Breakers
L S o w a i d t c B h r e e s a k
Rated voltage
12 kV
Type
12KML-M
Pole
3 Pole
Rated current
630A
Rated frequency
50/60Hz
Power frequency withstand voltage
32kV
Impulse withstand voltage
85kV
Rated short-time current (1s)
20kA
Rated short circuit making current
52kA
Load current
630A
Loop current
630A
Charging current
31.5A
Opening time
Operation type
Manual
60ms
Operating voltage
-
Operating current
-
Weight (Without fuse)
62.5kg
Manual operation cable lengt
Standard: 2.0m (Option: 1.5/2.6m)
VTL
F
A
LA
100
A
A
Type
Fuse-mounted
Operation type
LA-mounted
Fuse capacity
Operating voltage
Manual operation cable length
LA No LA Yes
Specify the rated current when necessary
VTL KML
F N
Fuse Yes Fuse No
A M
Auto Manual
-
A B
DC110V AC110V
A B
1.5M 1.8M
C
AC220V
C
2.0M
* KML type is dedicated to 12kV manual operation.
Electric Equipment General Catalog
D-7
Striker
Rated voltage [kV]
24
Model name
Rated current
Rated maximum Rated minimum
In
breaking current breaking current
[A]
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
[kA]
40
25.8
[A]
Dimension e [mm]
d [mm]
Weight [kg]
56
2.3
65
3.1
78
4.1
442
5In
Example of fuse-mounted LBS installation This one line diagram is an example installation where the fuse combination LBS applicable. The rated current of the power fuse is chosen considering the capacity of power-receiving transformer and the protection coordination with OCR. VITZRO LBS is equipped with a fuse combined trip device that automatically trips when one fuse is melted due to short circuit or overcurrent, so that it operates quickly and accurately in case of fault in any phase.
Incoming
LBS with Fuse combination
WHM COS or PF
COS, PF or CB
Load
D-8
VITZRO TECH LBS
Load
Load
Load Break Switches
Auxiliaries& Devices
This is used for remote On/Off control. The standard rated voltage is DC 110V, but AC 110V/AC 220V are also available by individual order.
Remote operation cable Electricallydriven operating unit
This is used for manual operation at the panel door, and comprises a cable and a manual handle.
L S o w a i d t c B h r e e s a k
Manual handle
This relay operates according to the main blade operation, and is used in indicating the switch status and controlling the switch.
Auxiliary relay
Shunt trip device
This device is equipped with a shunt coil to facilitate quick trip operation by the signal from the relay in case of fault.
This is a switching counter that indicates the number of switching times of LBS
Counter
Fuse melting trip device
This device provides trip operation to prevent open phase operation in case one fuse out of three fuses is melted due to a fault, which is clear and quick using mechanical links.
1a contact is provided to enable the remote monitoring of fuse melting. (F1-F2) P
N
C
T
F1
A1 A3 B1
B3
F2
A2 A4 B2
B4
Fuse melting indicator contact
Electric Equipment General Catalog
D-9
Basic type
Fuse-mounted
Circuit diagram for installation
Vertical installation
Horizontal Installation
* Check if the surface on which the device is installed is flat, to prevent the distortion of LBS
Fixed frame (Switch cabinet door)
Above R150
Cable fixture
---- corresponds to the horizontal
Manual handle
installation.
Cable
1. 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.
D-10
VITZRO TECH LBS
Load Break Switches
Circuit Circuit
Base Frame
Support Insulator Load Terminal L S o w a i d t c B h r e e s a k
Arcing Blade Main Blade Line Terminal
Arc Nozzle
Fixed Main Contact Fixed Support Insulator Operating Rod Operating Mechanism Manual Operation Cable
Geared Motor Manual Handle
Support Insulator Load Terminal
Current limiting Power Fuse
Fuse Trip Device
Electric Equipment General Catalog
D-11
Automatic (Electrically-driven)
DC 110V
) V 0 1 1 C D ( e g a t l o v l o r t n o C
P : DC 110V () N : DC 110V () C : CLOSE T : TRIP SC : Trip Coil M : Motor for closing 89X : Auxiliary relay for closing Manual
Manual
Combination
AC 110V / AC 220V
P : AC 110V / AC 220V () N : AC 110V / AC 220V ()
) V 0 1 1 C D ( e g a t l o v l o r t n o C
C : CLOSE T : TRIP SC : Trip Coil
(DC 110V / DC 220V) M : Motor for closing
DC 110V / DC 220V) 89X : Auxiliary relay for closing Manual
D-12
VITZRO TECH LBS
Manual
Combination
Load Break Switches
Outside Drawing Outside Drawing
Basic Type/LA-Embedded Type (Auto/Manual)
L S o w a i d t c B h r e e s a k
Fuse-Mounted Type/LA-Embedded Type (Auto/Manual)
Electric Equipment General Catalog
D-13
12kV, Manual-Exclusive
Installation dimension
Basic type and LA-embedded type (12KML-M)
D-14
VITZRO TECH LBS
Fuse-mounted type and LA-embedded type
Load Break Switches
Fuse Selection Standard Fuse Selection Standard
Power fuse for transformer circuit protection Rated voltage [kV]
PF
TR
24
Rated capacity of transformer [kVA] 3
Fuse link
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
L S o w a i d t c B h r e e s a k
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 transformer rated current in case of secondary short circuit.
