B7
Gas Insulated Load Break Switch
C
O
N
T
E
N
T
S
For Underground
Features
B7-2
Rated Specification / Controller
B7-4
Dimension
B7-6
Control Circuit Diagram
B7-9
For Pole Mounted
Features
B7-10
Rating & Performance / Controller
B7-12
Dimension
B7-14
Control Circuit Diagram
& Controller Connection Diagram
B7-16
Certification
B7-17
Gas Insulated Load Break Switch _ Feature
For Underground(GLBS)
VITZRO TECH Gas Insulated Load Break Switch is a SF6 gas-insulated multi-circuit switch that is installed on ground
or underground at 22.9kV-Y or 22kV-△ underground distribution line. It is an optimal product that uses SF6 gas as the
insulating medium superior for its arc extinguishing capability and the operating mechanism is a single-operation method
with 3-ground circuit for distinguishing the lines and branch lines.
B7-2
VITZROTECH
Switch Body
It is a 3-phase integrated operating, single-tank type that consists of switch, auxiliaries
based on the operation method, cabinet based on the installation type and so on.
It is equipped with a ground switch for each circuit and it is designed so that
the operating state of the ground switch can be easily checked outside.
B7
Bolts are not used in order to prevent gas leak and it is completely enclosed by
TIG welding. The insulating material used in the inner part is the bisphenol, epoxy
resin with excellent resistance to electrical and mechanical characteristics and SF6 gas.
▶
Operating Device
The operating device of the switch is divided into a main circuit part and earth part.
It is designed to require no special skills and all 3-phase contacts are opened / closed
simultaneously and the switching speed is always consistent regardless of the operation method.
An automatic switch enables the mechanical closing/opening, electrical
closing/opening and remote operation (after installing a separate terminal and
communication device) of the main circuit part. However, the closing
(earth)/opening of ground switch part can be manually operated on site.
An interlock device is applied so that the closing (earth) operation of the ground
switch is not done unless the main circuit is opened and the closing operation of
the main circuit is impossible at closing (earth) state of the ground switch.
▶
Bushing Part
It is structured to connect to the 600A deadbreak-type connector that is regulated
in IEEE386 and it is installed in the body part using bolts and it is in an O-ring
enclosed structure for full enclosure.
A flange is made up of epoxy material and the flange surface that is connected
to the body is connected based on IEEE386.
▶
Cabinet
The cabinet and the base are made up of stainless steel plate [KSD 3705 3(Type & Mark),
STS304L] with size of 2.0mm or bigger and 3.0mm or bigger respectively.
It is structured so that water does not form a pool in the cabinet.
The cabinet is designed and manufactured so that it is easy to connect and disconnect cables,
detect current, check earth and phase and so forth by opening the cabinet door easily.
In addition, automatic voltage transformer (PT) for power control is installed in the lower part
of the body and a door is installed in the lower-side part of the cabinet for easy replacements.
The cabinet is coated in Munsell NO. 7.5GY 3.5/2 (green color) when installed in green belt
and in Munsell NO. 5Y 7/1 (gray color) when installed in sidewalk and other areas.
Product Standards
•ES - 5925 - 0002(2008. 12. 30) •IEC 60265-1(1998)
•IEC 60694(2002) •IEEE C37.71(2001) •IEEE C37.90.1(2002)
▶
Gas Insulated Load Break Switch
B7-3
Gas Insulated
Load Break Switch
The body cabinet is 3mm or bigger and the front part where the bushing is mounted
is 5mm or bigger and both are manufactured using a stainless steel plate [KSD 3705 3
(Type & Mark), STS304L] that can endure the inner gas pressure. It is designed to have
a stable structure with strong electrical and mechanical characteristics and durability.
Ratings
Type
33-D-M-125
(Manual Type)
44-D-M-125
(Manual Type)
Rated Voltage
25.8kV
Rated Current
600A
Rated Frequency
60Hz
Rated Short Time Withstand Current
2.5 kA / 1s
Rated Closing Current
32.5 kAp
Load Current (100%)
Switching
Capability
600A
Load Current(5%)
30A
LOOP Current
600A
Exciting Current
21A
Cable Charging Current(100%)
25A
Cable Charging Current(30%)
7.5A
Line Charging Current
1.5A
5000 times
Voltage Switching Closing - Opening
Capability
Opening - Contact
1000 times
Power Frequency
Withstand Voltage
Switching
Capability
60kV /1min
Lightning Impulse
Withstand Voltage (1.2×50 μs)
125kV
DC 78kV/15min
DC Withstand Voltage
Minimum Discharge
Extinction Voltage
19kV
-
Rated Operating Voltage
SF6 Gas-Filled Pressure
Weight
Function &
Performance
44-D-A-125
(Automatic Type)
About 230kg
0.07 MPa・G(at 20℃)
About 300kg
AC220V, DC24V
About 580kg
Gas Pressure Gauge
It is installed with a gas pressure gauge with diameter of 65mm or above in order to easily check the inner gas
pressure and a scale mark is divided into colors for the normal operating pressure range with MPa unit marked.
Counter
A mechanical counter for switching operation of each circuit is mounted and reset of it is impossible.
Earth Terminal
A clamp-type earth terminal is installed in the switch body and more than 1 terminal is installed for each
circuit at Bus Bar so that it can be connected to the cable earth line that connects to the switch and the
switch earth line (22~205㎟)
Body Fixing Bracket
A bracket with holes of 14mm in diameter (for fixed bolts) is welded and mounted in the lower part of the body to fix the
switch and it should be strong enough to support the weight of the body regardless of the installation direction.
Towing Hook
In case of the switch body or for on-ground installation type, a towing hook is installed at the cabinet for lifting.
Gas-Injecting Valve
The body consists of a valve to inject gas and it is located in a place where it cannot be easily damaged
due to the delivery, installation and operation.
Hot-line Display Lamp
A switch installed on ground is equipped with a hot-line display lamp to distinguish whether there is a
hot-line or not for each circuit.
B7-4
VITZROTECH
Gas Insulated Load Break Switch
Controller
Structure
B7
•Modem Installing Tool
•Plug Socket
•Voltage Supply Unit : AC220V/DC24V
Functions
Our control box is equipped with the following
functions.
1) Control Function : It can control the switch.
- Operation Switch“Close/Open”
2) Status Information Display: It displays the
switch state.
- Operation Switch“Close/Open”
- Operation Lock“Control Box/Body”
- Storage Battery Test “Charging Part/Storage
Battery”
3) Selection Switch: It sets the control
conditions.
- Control Power“ON/OFF (Toggle)”
- Selection of Operation“Site/Remote (Toggle)”
- Operation Lock“Lock/Unlock (Momentary)”
4) Others
- Connector to connect to FRTU
(Located at the upper part of control part)
- 220V plug socket
Gas Insulated Load Break Switch
B7-5
Gas Insulated
Load Break Switch
•Control Part
•Battery : DC 24V(12V, 2EA)
For
Underground
44-D-A-125(4-Circuit Automatic Type)
No.
Name of parts
8
9
10
11
12
13
14
P.T
Actuator
Earth Bushing
Earth Terminal
Storage Battery
Rating Plate
Gas Pressure Gauge
No.
Name of parts
Q’
ty No.
1
4
1
7
2
1
1
1
2
3
4
5
6
7
Name of parts
Q’
ty
Cabinet
1
Controller
1
Power Bushing
1
Power Elbow ASS’
y 1
Gas-Injecting Part ASS’y 1
Current Transformer 12
Main Circuit Bushing 12
44-D-M-125(4-Circuit Manual Type)
5
6
7
8
9
B7-6
VITZROTECH
Earth Bushing
Earth Terminal
Rating Plate
Gas Pressure Gauge
Hot-line Indicator
QTY No.
1
7
1
1
4
1
2
3
4
Name of parts
Cabinet
Gas-Injecting Part ASS’y
Main Circuit Bushing
Actuator
QTY
1
1
12
4
Gas Insulated Load Break Switch
33-D-M-125(3-Circuit Manual Type)
B7
5
6
7
8
9
Name of parts
Earth Bushing
Earth Terminal
Rating Plate
Gas Pressure Gauge
Hot-line Indicator
QTY No.
1
7
1
1
4
1
2
3
4
Name of parts
QTY
Cabinet
Gas-Injecting Part ASS’y
Main Circuit Bushing
Actuator
1
1
12
4
Internal Diagram of Body
Gas Insulated Load Break Switch
B7-7
Gas Insulated
Load Break Switch
No.
For
Underground
Control Box
@
@
@
@
@
@
Accessories
Operating Handle
It is an operating handle to be used when manually operating the switch to ON/OFF/Earth operation.
•How to Use
Insert the operating
handle into the hole
of state display panel
and rotate it for operation.
Lock Bar
It is a lock device to prevent any operations when the switch is ON, OFF or in a earth state.
•How to Use
Insert the lock bar to the hook
of state display panel and
lock the lower part so that the
switch cannot be operated.
B7-8
VITZROTECH
Gas Insulated Load Break Switch
Internal Circuit
Diagram &
Controller
Connection
Diagram
B7
Gas Insulated
Load Break Switch
Gas Insulated Load Break Switch
B7-9
Gas Insulated Load Break Switch _ Feature
For Pole Mounted(PGS)
VITZRO TECH Gas Insulated Load Break Switch is a switch that is used at 22.9kV-Y / 10kV-△ overhead distribution line
applied with SF6 gas as the insulating medium which is superior in terms of arc extinguishing. It is an optimal product to
distinguish the overhead distribution line and to be used as a branch switch with the operating mechanism, a spring
toggle method.
B7-10
VITZROTECH
Switch Body
▶
Operating Device
The operating device of the switch is divided into a main circuit part and earth part. It is designed to
require no special skills and all 3-phase contacts are opened / closed simultaneously and the switching.
speed is always consistent regardless of the operation method.
In case of an automatic switch, it can be operated by an electrical switching device of the control box
and by a manual operating device of the body. It can be operated based on the designated operation
method [Local/Remote].
▶
Bushing Part
It exceeds the standard impulse insulation density of the switch and all bonding parts are treated so
that gas does not leak and air does not get in. It is structured to maintain the mechanical sticking force.
It is made up of a qualitative magnetic material that has the freezing and thermal capability, it is firm
enough to endure the mechanical impulse and it is moist-proof. In addition, it used a polysil insulating
material that is molded by an advance insulating material, polymer concrete, which our company
retains the patent, and it maintains the dielectric strength even at poor operational conditions since the
electrical and mechanical strength and arc extinguishing are superior.
▶
Outside Connecting Terminal
It maintains the sticking force by connecting the terminal or lead-out line to the bushing.
An insulation wire for high-voltage which is flexible and weather-protected is used and the nominal
sectional area of the conductor and the wire composition are 125㎟(159/1.0) or bigger for 400A and
200㎟(19/14/1.0) or bigger for 630A and the required length is 2m.
The lead-out line is water-proof which prevents the water from entering and the connecting part
within the mold cone is structured not to allow water from entering.
The connecting part of mold cone and lead-out line is centralized with an electric field and it is
glued firmly so that the connecting part is not disconnected and its surface is smoothly treated.
Applied Standard
•ES - 5925 - 0003(2007. 03. 27) •IEC 60265-1(1998)
•ANSI C37.71(2001) •ANSI C37.63(1997) •GB3804-90
▶
Gas Insulated Load Break Switch
B7-11
B7
Gas Insulated
Load Break Switch
It is a 3-phase integrated operating single-tank type that consists of a switch body, mounting tool
and control box. It easy to arm the concrete pole or power line and it can be installed stably. It is
designed in a simple structure for an easy maintenance work.
A stainless steel plate (KSD3705 2(Type & Mark), STS304L) of 3mm or bigger is used for the tank
cabinet and it has a sufficient electrical and mechanical strength. Each part of the switch is simple
and durable and the opening and closing are operated smoothly and accurately. There is no
half-closing or half-opening during the opening/closing operations, it is not opened / closed due to
vibrations or other causes and it is structured so that there is no water pool at any part of the switch.
Bolts are not used in order to prevent gas leak and it is completely enclosed by TIG welding. The
insulating material used in the inner part is the bisphenol, epoxy resin with excellent resistance to
electrical and mechanical characteristics and SF6 gas.
O-Ring that is used for the enclosure at the bonding part is made up of EPR and FPM that is
heat-proof, weather-protected and gas-proof and the surface of the O-Ring is covered with grease
that is heat-proof, weather-protected and gas-proof.
Ratings
VPS-M24 VPS-A24 VPS-M26 VPS-A26 VPS-M12 VPS-A12
(Automatic
(Automatic
(Automatic
(Manual Type) Type)
(Manual Type)
(Manual Type) Type)
Type)
Type
Rated Voltage
25.8 kV
Rated Current
400A
400A
Rated Frequency
Rated Making Current
50Hz
16 kA /4s
32.5kAp
40kAp
400A
400A
630A
630A
630A
630A
Load Current( 5%)
20A
20A
31.5A
31.5A
31.5A
31.5A
LOOP Current
400A
400A
630A
630A
630A
630A
14A
14A
22A
22A
-
10A
Exciting Current
Cable Charging Current(100%)
25A
25A
25A
25A
10A
Cable Charging Current(30%)
7.5A
7.5A
7.5A
7.5 A
-
-
Line Charging Current
1.5A
1.5A
1.5A
1.5A
-
-
5000 times
Power
Frequency Between Earths
Withstand Between Poles
Between Phases
Voltage
Lightning
Impulse
Withstand
Voltage
Weight
42kV/1min
60kV/1min
49kV/1min
60kV/1min
42kV/1min
150kVp
75kVp
150kVp
85kVp
150kVp
-
AC220V,
DC24V
75kVp
AC220V,
-
-
DC24V
AC220V,
DC24V
0.15MPa・G(at 20℃)
About 135kg About 170kg About 155kg About 190kg About 145kg About 155kg
Certificated & Approval
ES-5925-0003(07.03.27), IEC 60265-1(1998)
Manual Operating Device
It is operated safely and easily using a highvoltage (COS) operating bar and it is structured to
complete the closing and opening with one
operation. The position of the closing and opening
operation device is facing the front and it is
equipped with the closing at the right side and
the opening at the left side. The shape is clearly
distinguishable.
Switch Operating Lock Device
It can lock the operating device at open-circuit
and closed-circuit positions and when it is
locked, electrical and mechanical switching
operations are impossible.
Operating State Indicator
An operating state indicator is installed to clearly
identify the opening/closing of the disconnecting
switch.
Low Pressure Display & Lock Device
It is equipped with an automatic lock device that
enables to prohibit the electrical and mechanical
opening and closing at a condition which may
lead to a danger due to the low gas pressure. It
is installed with an indicator that allows to easy
checking.
VITZROTECH
60kV/1min
Between Earths
Between Poles
Between Phases
SF6 Gas-Filled Pressure
B7-12
630A
Load Current(100%)
Rated Operating Voltage
Function &
Performance
630A
12.5kA /1s
Switching Capability(Mechanical)
Dielectric
Strength
630A
60Hz
Rated Short Time Withstand Current
Switching
Capability
12kV
630A
GB3804-90
Gas Emission Equipment
When the inner gas pressure of the body
increases sharply due to an internal failure, it
prevents the destruction of tank for the safety of
operators and people and the emission equipment
is installed so that it does not spread outside. The
equipment is manufactured in a structure that
emits the gas in a direction that does not harm
the operators.
Earth Terminal
It is structured for easy connection to 22㎟~38㎟
copper wire without a separate auxiliary tool and
STS304 is used for the material.
Counter
A mechanical counter is installed outside so that it
can be checked.
Gas-Injection Valve
A valve that can inject gas to the tank of the
body when required is installed in the rear part of
the tank and it is installed in a place where it is
not damaged during the delivery, installation and
operation.
Gas Insulated Load Break Switch
Controller
Configuration
It is manufactured based on KEPCO specifications (ES-5925-0003) so the structure is simple and the
operation is convenient.The composition of the control box is shown below.
B7
Gas Insulated
Load Break Switch
•Control Part
•Battery : DC 24V(12V, 2EA)
•Voltage Supply Unit : AC220V / DC24V
•Modem Installing Tool
•Plug Socket
Functions
Our control box is equipped with the following functions.
1) Control Function : It can control the switch.
- Operation Switch“Close/Open”
2) Status Information Display : It displays the switch state.
- Operation Switch“Close/Open”
- Operation Lock“Control Box/Body”
-“Gas Pressure”
- Storage Battery Test“Charging Part/Storage Battery”
3) Selection Switch : It sets the control conditions.
- Control Power“ON/OFF (Toggle)”
- Selection of Operation“Site/Remote (Toggle)”
- Operation Lock "Lock/Unlock (Momentary)"
4) Others
- Connector to connect to FRTU (Located at the upper part of control part)
- Door Limit Switch
- 220V plug socket
Gas Insulated Load Break Switch
B7-13
25.8kV Mold Cone Type
PGS
Character Color
22.9kV
A
Unlock
Lock
Close
Open
No.
Red
Red
Green
Red
Red
Green
1
2
3
4
Name of parts
QTY
Hanger Bracket Ass’y 1
Body
1
Bushing Ass’y (Fixed Part) 3
Bushing Ass’y (Movable Part) 3
Body Material: STS304L (t=3mm)
Body Weight: B kg
Rated Current
A
B
400A
630A
400A
630A
160
175
12kV Terminal Type
Character Color
12kV
630
Unlock
類
合
分
B7-14
VITZROTECH
No.
Red
Red
Green
Red
Red
Green
1
2
3
4
Name of parts
Hanger Bracket Ass’
y
Body
Bushing Ass’y (Fixed Part)
Bushing Ass’y (Movable Part)
QTY
1
1
3
3
Body Material: STS304L (t=3mm)
Body Weight: A kg
Rated Current
A
Manual Type
Automatic Type
145
155
Gas Insulated Load Break Switch
Body
B7
Name of parts
Bushing
Current transformer
Puffer housing
Tulip contact
Tulip contact
Fixed contact
Conductor
Moving bar
Puffer cone
V-caracition
Gas Insulated
Load Break Switch
NO.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Material
Porcelain, Polysil
P.O
On
On+W
On+W
On
On
Teflon
STS
Control Box
Gas Insulated Load Break Switch
B7-15
PGS
B7-16
VITZROTECH
Gas Insulated Load Break Switch
B7
Gas Insulated
Load Break Switch
Gas Insulated Load Break Switch
B7-17
B7-18
VITZROTECH