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Gas Insulated Switchgear GRM6-12

Short Description:


Product Detail

Product Tags

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Panasonic welding robot

gr (1)

Gas tank assembly line

gr (2)

Gas tank helium leak detection system

Product Overview

GRM6(XGN□)-12 fully insulated fully enclosed compact switchgear, which can realize functions of control, protection, measurement, monitoring, communication, etc. is especially suitable for places with small distribution facility site and high reliability requirements, and places with a relatively harsh natural environment and conditions, such as underground, highland and coastal areas. It is mainly used in areas where land is tight and space is limited, high reliability is required, like industrial and mining enterprises and substations, subways, light rail railways, etc.

It combines microprocessor technology, modern network communication technology and new switch manufacturing technology to effectively separate and combine load current and short circuit current. The measurement protection control and communication functions configured inside the device can fully meet the requirements of the distribution automation system.

The conductive parts of the high voltage components such as circuit breakers, three working position switches and load break switches in the main circuit are installed in a sealed cabinet-type stainless steel casing. The biggest feature is that it is not affected by the external environment, and has high reliability and can make the equipment run safely for a long time in places with poor environment; secondly, the size of the high voltage component is reduced, the device is miniaturized, and the parts inside the sealed casing are free from corrosion and rust, thereby eliminating the influence. In addition, with high voltage components with stable performance and long electrical life, maintenance-free or less maintenance requirements can be achieved.

Type Description

Use Conditions

Ambient air temperature: -40℃~+40℃;

Relative air humidity: daily average ≤95%, monthly average ≤90%;

Altitude ≤1500m (under standard inflation pressure);

Seismic intensity ≤9 class;

Places free from fire, explosion, serious contamination, chemical corrosion and severe vibration.

Special Conditions

Manufacturers and end users must agree on special operating conditions that are different from normal operating conditions;

If a particularly harsh operating environment is involved, the manufacturer and supplier must be consulted;

When electrical equipment is installed at an altitude of 1500 meters or more, special instructions are required to adjust the pressure during manufacturing. When the pressure is adjusted, the life of the switchgear itself has no significant effect.

Product Technical Characteristics

Modular design

The switch is divided into fixed module and expandable module group. In the same SF6 insulated air chamber, up to 6 modules can be configured. Switching cabinets with more than 6 modules must be connected with the expansion busbar to realize the semi-module. Structure; full module configuration can also be achieved by using an extended bus between all modules. Through the combination of different functional modules, a simple to complex power distribution scheme can be formed to meet various configuration requirements in the secondary substation and the opening and closing.

Compact structure

Except for the air-insulated metering cabinet, all modules are only 325mm wide and the metering cabinet width is 695mm; the cable joints of all units are the same height to the ground, which is convenient for on-site construction.

Unaffected by the environment

All high-voltage live parts are installed in a sealed stainless steel case. The case is welded with a stainless steel plate and filled with SF6 gas at a working pressure of 1.4 bar. The degree of protection is IP67. It can be used in places where it is installed in damp, dusty, salt spray, mine, box-type substation and air pollution. Even the fuse compartment has an IP67 rating. The extension busbars are completely insulated and shielded to ensure that they are not affected by changes in the external environment.

Highly reliable personal safety

All live parts are enclosed in the SF6 air chamber; the switch has a reliable pressure relief channel, the load and grounding switches are three-position switches, simplifying the interlocking between each other; reliable mechanical interlock between the cable compartment cover and the load switch .

Performance Index

● SF6 gas pressure: 1.4bar under 20℃ (absolute pressure)

● Annual leakage rate: 0.25%/year

● Protection grade

SF6 gas room: IP67

Fuse tube: IP67

Switchgear enclosure: IP3X

● Busbar

Switchgear internal busbar: 400mm2Cu

Switchgear earthing busbar: 150mm2Cu

Thickness of gas room stainless steel enclosure: 3.0mm

● The front panel and the side panel of the switchgear, and the front cover of the cable room, the company's standard color is: jade color 7783; if users have special requirements, please put forward when ordering.

Meet Main Standards

• GB 1984 High-voltage alternating-current circuit-breakers (IEC 62271-100: 2001, MOD)

• GB 1985 High-voltage alternating-current disconnectors and earthing switches (IEC 62271-102: 2002, MOD)

• GB/T 11022 Common specifications for high-voltage switchgear and controlgear standards

• GB 3804 High-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV (IEC 60265-1-1998, MOD)

• GB 3906 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV (IEC 62271-200-2003, MOD)

• GB 4208 Degrees of protection provided by enclosure (IP code) (IEC 60529-2001, IDT)

• GB 16926 High-voltage alternating current switch-fuse combinations (IEC 6227-105-2002, MOD)

• DL/T 402 Specification of high-voltage alternating-current circuit-breakers (IEC 62271-100-2001, MOD)

•DL/T 403 HV vacuum circuit-breaker for rated voltage 12kv to 40.5kv

• DL/T 404 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV

• DL/T 486 HV AC disconnectors and earthing switches (IEC 62271-102-2002, MOD)

• DL/T 593 Common specifications for high-voltage switchgear and controlgear standards IEC 60694-2002, MOD)

• DL/T 728 Technical guide for the order of gas-insulated metal-enclosed switchgear (IEC 815-1986, IEC 859-1986)

• DL/T 791 Specification of indoor AC HV gas-filled switchgear panel

Main Technical Parameters

NO.

Items

Unit

Value

Load break switch

Combination

Vacuum circuit breaker

Disconnect/

earth switch

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Power frequency withstand voltage (phase-to-phase/across open contacts)

kV

42/48

4

Lightning impulse withstand voltage (phase-to-phase/across open contacts)

kV

75/85

5

Rated current

A

630

See note 1

630

630

6

Rated closed-loop breaking current

A

630

7

Rated cable charging breaking current

A

10

8

Rated short circuit making current (peak)

kA

50

80

50

9

Rated peak withstand current

kA

50

10

Rated short time withstand current

kA/4s

20

11

Rated short circuit current

kA

31.5

20

12

Rated transfer current

A

1700

13

Max. current of equipped fuse

A

125

14

Circuit resistance

μΩ

≤300

≤600

≤300

15

Mechanical life

times

5000

3000

5000

2000

Note 1: depends on the rated current of fuse.

Ordering Instructions

When ordering, the following technical information must be provided

Main circuit diagram, arrangement diagram, and layout diagram;

Switchgear secondary circuit schematic diagram;

• If the switchgear is used under special environmental conditions, it should be proposed.

Standard Modules

Each module of the GRM6(XGN□)-12 type switchgear has the following configurations

• See standard configuration and features in "cable connection module without grounding knife"

• C cabinet - load switch module

See standard configuration and features in "load switch module"

•See standard configuration and characteristics in "load switch and fuse combination module"

• V cabinet - vacuum switch module

See standard configuration and features in "vacuum switch module"

• Capacitive voltage indicator for the incoming bushing

• Install a pressure gauge that monitors SF6 density in each chamber

•  Lifting lug

• Operating handle

Optional Configurations

Electric operating mechanism/cable short circuit and ground fault indicator/current transformer and meter

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Standard Expansion Modules

Available modules

C Load switch module

Width=325mm

D Cable connection module without grounding knife

Width=325mm

F Load switch fuse combination electrical module

Width=325mm

V Vacuum circuit breaker module

Width=325mm

SL Busbar segmentation switch module (load switch)

Width=325mm

SvBr Busbar segmentation switch module (vacuum circuit breaker)
SV is always with the bus lifting module

Width=650mm

M Meter module 12kV

Width=695mm

PT Module

Width=370 or 695mm

Note: A single module must add extension before it can be used.

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C Expansion Module-Load Switch Module C

Standard Configuration and Characteristics

• 630A internal bus

• Three working-position load/earth switch

• Three working-position single-spring operating mechanism, with two independent load switch and earth switch operating shafts

• Load switch and earth switch position indication

• Outgoing bushing in front horizontal arrangement, 630A 400 series bolted bushing

• Capacitive voltage indicator indicating that the bushing is live

• For all switch functions, there is a convenient add-on padlock on the panel

• SF6 gas pressure gauge (only one in each SF6 gas box)

• Ground busbar

• Interlocking of the earth switch to the front panel of the cable compartment

Optional Configuration and Characteristics

• Reserved bus extension

• External bus

• 110V/220V DC/AC

Load switch operation motor 110V/220V DC/AC

• Short circuit and ground fault indicator

• Measure toroidal current transformer and ammeter

• Meter toroidal current transformer and watt-hour meter

• A lightning arrester or double cable head can be installed at the cable incoming bushing

• Key interlocking

• Incoming live grounding lock (lock the earth switch when the bushing is energized) 110V/220VAC

• Auxiliary contacts

2NO+2NC Load switch position 2NO+2NC

2NO+2NC Earth switch position 2NO+2NC

1 NO Pressure gauge with signal 1 NO

1 NO Arc extinguisher with signal contact 1 NO

• Secondary device can be installed in

Secondary line chamber at the top of the switchgear

Low voltage box at the top of the switchgear

Expansion Module-Without Grounding Knife Module D

Standard Configuration and Characteristics

• 630A internal bus

• Outgoing bushing in front horizontal arrangement, 630A 400 series bolted bushing

• Capacitive voltage indicator indicating that the bushing is live

• SF6 gas pressure gauge (only one in each SF6 gas box)

• Ground busbar

Optional Configuration and Characteristics

• Reserved bus extension

• External bus

• Short circuit and ground fault indicator

• Measure toroidal current transformer and ammeter

• Meter toroidal current transformer and watt-hour meter

• A lightning arrester or double cable head can be installed at the cable incoming bushing

• Secondary device can be installed in

Secondary line chamber at the top of the switchgear

Low voltage box at the top of the switchgear

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Expansion Module-Load Switch and Fuse Combination Module F

Standard Configuration and Characteristics

• 630A internal bus

• Three working-position load switch, the fuse head end is mechanically linked with the fuse tail end earth switch

• Three working-position double-spring operating mechanism, with two independent load switch and earth switch operating shafts

• Load switch and earth switch position indication

• Fuse tube

• Fuse placed horizontally

• Fuse tripping indication

• Outgoing bushing in front horizontal arrangement, 200A 200 series plug-in bushing

• Capacitive voltage indicator indicating that the bushing is live

• For all switch functions, there is a convenient add-on padlock on the panel

• SF6 gas pressure gauge (only one in each SF6 gas box)

• Ground busbar

• Fuses for transformer protection parameter

12kV max. 125A fuse

• Interlocking of the earth switch to the front panel of the cable compartment

Optional Configuration and Characteristics

• Reserved bus extension

• External bus

• Load switch operation motor 110/220V DC/AC

• Paralleling tripping coil 110/220V DC/AC

• Paralleling closing coil 110/220V DC/AC

• Measure toroidal current transformer and ammeter

• Meter toroidal current transformer and watt-hour meter

• Incoming live grounding lock (lock the earth switch when the bushing is energized) 110V/220VAC

• Auxiliary contacts

Load switch position 2NO+2NC

Earth switch position 2NO+2NC

Pressure gauge with signal 1 NO

Fuse blown 1 NO

• Secondary device can be installed in

Secondary line chamber at the top of the switchgear

Low voltage box at the top of the switchgear

Expansion Module-Busbar Sectional Switch Module (Circuit Breaker) SvBr

Standard Configuration and Characteristics

• 630A internal bus

• 630A vacuum circuit breaker

• Two working-position double-spring operating mechanism for vacuum circuit breaker

• Vacuum circuit breaker lower disconnect switch

• Disconnect switch single-spring operating mechanism

• Mechanical interlocking of vacuum circuit breaker and disconnect switch

• Vacuum circuit breaker and disconnect switch position indication

• For all switch functions, there is a convenient add-on padlock on the panel

• SF6 gas pressure gauge (only one in each SF6 gas box)

• SV is always connected to the busbar lifting switchgear, occupying two module widths together

Optional Configuration and Characteristics

• Reserved bus extension

• External bus

• Vacuum circuit breaker operation motor 110V/220V DC/AC

• Paralleling tripping coil 110/220V DC/AC

• Paralleling closing coil 110/220V DC/AC

• Key interlocking

• Auxiliary contacts

Circuit breaker position 2NO+2NC

Disconnect switch position 2NO+2NC

• Secondary device can be installed in

Secondary line chamber at the top of the switchgear

Low voltage box at the top of the switchgear

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V Expansion Module - Vacuum Circuit Breaker Module V

Standard Configuration and Characteristics

• 630A internal bus

• 630A transformer/line protection vacuum circuit breaker

• Two working-position double-spring operating mechanism for vacuum circuit breaker

• Vacuum circuit breaker lower three working-position disconnect/earth switch

• Three working-position disconnect/earth switch single-spring operating mechanism

• Mechanical interlocking of vacuum circuit breaker and three working-position switch

• Vacuum circuit breaker and three working-position switch position indication

• Electronic protection relay

• Trip coil (for relay action)

• Outgoing bushing in front horizontal arrangement, 630A 400 series bolted bushing

• Capacitive voltage indicator indicating that the bushing is live

• For all switch functions, there is a convenient add-on padlock on the panel

• SF6 gas pressure gauge (only one in each SF6 gas box)

• Ground busbar

• Interlocking of the earth switch to the front panel of the cable compartment

Optional Configuration and Characteristics

• Reserved bus extension

• External bus

• Vacuum circuit breaker operation motor 110V/220V DC/AC

• Paralleling tripping coil 110/220V DC/AC

• Paralleling closing coil 110/220V DC/AC

• Measure toroidal current transformer and ammeter

• Meter toroidal current transformer and watt-hour meter

• Incoming live grounding lock (lock the earth switch when the bushing is energized) 110V/220V AC

• Key interlocking

• Auxiliary contacts

Vacuum switch position 2NO+2NC

Disconnect switch position 2NO+2NC

Earth switch position 2NO+2NC

Vacuum switch trip signal 1 NO

Pressure gauge with signal 1 NO

• Secondary device can be installed in

Secondary line chamber at the top of the switchgear

Low voltage box at the top of the switchgear

• SPAJ140C Other relays such as SPAJ140C

Expansion Module-Busbar Sectional Switch Module (Load Switch)SL

Standard Configuration and Characteristics

• 630A internal bus

• Disconnect switch

• Single-spring operating mechanism

• Switch position indication

• For all switch functions, there is a convenient add-on padlock on the panel

• SF6 gas pressure gauge (only one in each SF6 gas box)

Optional Configuration and Characteristics

• Reserved bus extension

• External bus

• Load switch operation motor 110V/220V DC/AC

• Key interlocking

• Auxiliary contacts

Load switch position 2NO+2NC

• Secondary device can be installed in

Secondary line chamber at the top of the switchgear

Low voltage box at the top of the switchgear

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Expansion Module-12kV Metering Cabinet

Standard Configuration and Characteristics

• 2pcs current transformers

• 2pcs voltage transformers

• Fuse for PT protection

• Low voltage components

Voltmeter

Ammeter

WxHxD=695x1334x820mm

WxHxD=695x1680x820mm(with instrument box)

Optional Configuration and Characteristics

• Zinc oxide arrester

• Capacitive voltage indicator indicating the switchgear is electrified

• Low voltage components

1pc active watt-hour meter

1pc reactive watt-hour meter

Expansion Module-12kV Voltage Transformer Cabinet

Standard Configuration and Characteristics

• 1pc or 2pcs voltage transformer

• Fuse for PT protection

• Voltmeter

WxHxD=695x1334x820mm

WxHxD=695x1680x820mm (with instrument box)

Optional Configuration and Characteristics

• Zinc oxide arrester (695 width)

• Capacitive voltage indicator indicating the switchgear is electrified

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Incoming / Outgoing Line Protection

Use vacuum switch / vacuum circuit breaker module

The transformer or line protection is a vacuum switch/vacuum circuit breaker, with protective relays and current transformers. When the fault current reaches the setting current set by the protection relay, the protection relay issues a command to trip the switch through the trip unit.

◆ Transformer / Line Protection

The GRM6-12 C-GIS provides two types of transformer protection: load switch fuse combination and circuit breaker with relay protection.

Use Load Switch Fuse Combination Module

Transformer protection is a combination of current limiting high voltage fuse and load switch. The fuse compartment will be mounted behind a separate, latched enclosure at the front of the unit. The load switch uses a spring charging mechanism that can be triggered by a fuse striker. To facilitate the replacement of the fuse, an operating handle can be used to remove the end cap of the fuse compartment. The trip mechanism of the fuse is placed in front to ensure the waterproof performance of the entire system. The load switch fuse combination uses a spring-loaded type of backup-protection type current limiting fuse, and the striker side faces the front of the switchgear during installation.

◆ Fuse-Transformer Comparison Table

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◆Plan Instructions

Plan 1  CCF+

• Incoming line installed lightning arrester and with reserved extension

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Plan 2  CCFFF=CF

• 1 set at most 5 units, more than 5 units need to expand the bus connection

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Plan 3  VV=M=FFF

• High voltage side measurement

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Plan 4  PT=FF=FCSLCF=FF=PT

• Single busbar section with busbar PT

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Annex

1. Auxiliary contacts

2 NO + 2 NC indicator switch positions are available on all load switches and circuit breakers. A parallel trip coil (AC or DC) can be mounted to the transformer/switch breaker. The LV control unit is located behind the front panel.

2. Voltage indication

A capacitive voltage indicator indicates whether the bushing is energized and the socket on it can be used for the nuclear phase.

3. Short circuit / ground fault indicator

To facilitate fault location, the cable switch module can be equipped with a short circuit/ground fault indicator for simple fault detection.

4. Electric operation

The manual operation of the cable switch unit and the transformer unit is a standard solution. It is also possible to install an electric operating mechanism. Cable switch, vacuum circuit breaker, and earth switch are operated by mechanism located behind the front panel. All switches and circuit breakers can be operated by operating the handle (standard configuration) or can be equipped with a motor operating mechanism (accessory). However, the earth switch can only be operated manually and is equipped with a mechanism that has the ability to close the fault current. Electric operating mechanisms are easy to implement in stages.

5.Cable connection

The GRM6(XGN□)-12 switchgear is fitted with standard bushings. All bushings are the same height from the ground and are protected by a cable compartment cover. This cover can be interlocked with the earth switch. For dual cable incoming, a dedicated dual cable compartment cover can also be used.

6. Pressure indicator

Usually equipped with a pressure indicator, this indicator is in the form of a pressure gauge. Electrical contacts can also be provided to indicate a pressure drop.

7. External busbar

The GRM6(XGN□)-12 switchgear can be equipped with an external busbar with rated current 1250A.

8. Secondary line chamber / low voltage box

The GRM6 (XGN□)-12 switchgear can be equipped with a secondary line compartment or a low voltage box at the top of the switchgear. The secondary line compartment is used to install an ammeter (with or without a changeover switch) and a live blocking control unit. The low voltage box is used to install relays such as SPAJ140C, REF, and can also be equipped with an ammeter (with or without changeover switch) and a live blocking control unit.

9. Lightning arrester

The cable incoming/outgoing module of the GRM6(XGN□)-12 type switchgear can be equipped with a zinc oxide lightning arrester at the cable; a zinc oxide lightning arrester can also be installed on the busbar or in the M cabinet.

GRM6(XGN)-12 Switchgear Structure Diagram

1. Cable room

2. Fuse blow indicator

3. Fuse room

4. Installation room

5. charged display

6. Pressure indicator

7. Padlock device on the panel

8. Earth switch operating hole

9.Load switch operation hole

10. Analog circuit diagram

11. Opening button

12. Closing button

13. Circuit breaker operation hole

14.Disconnect switch operating hole foundation diagram

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◆ GRM6(XGN)-12 Switchgear Structure and Dimensions

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Foundation Diagram

1. Standard unit

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Foundation Diagram

2. 10kV metering cabinet

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Top view of the base channel steel when the GRM6(XGN□)-12 cabinet is connected to the 10kV M cabinet or PT cabinet

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Foundation diagram of GRM6(XGN□)-12 cabinet connected to 10kV M cabinet or PT cabinet

Overview

The C-type spring operating mechanism of GRM6-12 fully insulated gas-filled ring network switchgear is the configuration equipment of the rated voltage 12kV AC metal enclosed switch. This series of mechanisms uses planar scroll spring charge to control the action of the load switch and ground operation Adopted compression spring over-middle charge control. The working position has three operating positions: closing, opening, and grounding. This series of products have five-prevention interlocking function, small size, easy installation and strong adaptability.

The product is fully inspected and passed before delivery, in line with the relevant requirements of GB3804-2004 "high-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV", GB3906-2006 "alternating-current metal-enclosed switchgear and controlgear for rated voltage above 3.6kV and up to and including 40.5kV", GB16926-2009 "high-voltage alternating current switch-fuse combinations".

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electric incoming operating mechanism

Type Description

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Mechanism voltage: DC/AC220V, 110V, 48V, 24V

Mechanism type: J-incoming mechanism,

C-outgoing mechanism (with fuse trip)

Operation mode: D-electric operation,S-manual operation

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manual incoming operating mechanism

Operation Instructions for Spring Mechanism

● Closing operation:

Check whether the product is deformed during transportation. Install and fix the mechanism on the load switch. Use a special operating handle to insert it into the upper part of the mechanism and rotate it 90 degrees clockwise. The load switch closes the main circuit under the action of the spring force of the mechanism. Or electric operation, press the closing button and the motor drives the mechanism to complete the switch closing operation, at this time the grounding operation cannot be carried out.

● Opening operation:

Insert the operating handle into the upper part of the mechanism and rotate it counterclockwise about 90 degrees. The load switch opens the main circuit under the action of the spring force of the mechanism. Or press the opening button during electric operation, and the motor drives the mechanism to complete the opening operation. At this time, the closing operation or grounding operation can be performed.

● Grounding closing and grounding opening operations:

Insert the operating handle into the lower part of the mechanism and rotate it clockwise about 90 degrees. The load switch closes the ground circuit under the action of the spring force of the mechanism. At this time, the main circuit cannot be closed. The operating handle rotates counterclockwise about 90 degrees, the load switch is opened under the action of the spring force of the mechanism, and the grounding circuit can be opened. At this time, the closing operation or grounding operation can be performed.

Main Technical Parameters

NO.

Item

Unit

Value

1

Rated frequency

Hz

50

2

Rated current

A

630

3

Rated short time withstand current

kA

20/25

4

Rated peak withstand current

kA

63

5

Rated short circuit duration

S

2

6

Rated short circuit making current

kA

63

7

Theoretical operation number

times

5000

Precautions for Use Environmental Conditions

● The altitude ≤ 2000m, and the seismic fissure ≤ 8 degrees.

● The ambient air temperature is -40℃~+40℃. Relative temperature daily average ≤90%, monthly average ≤90%.

● Installation sites with frequent violent vibrations, water vapor, gas, chemical corrosive deposits, dust and dirt, and fires that significantly affect the performance of the mechanism, or with explosion hazards are not suitable for use.

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Circuit breaker for C-GIS (with disconnector without earthing)

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Circuit breaker for C-GIS (with disconnector without earthing)

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Load break switch for C-GIS (with 2 working positions)

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Load break switch for C-GIS (with 3 working positions)

Product Features

● Provide fully shielded and fully sealed separable connection when matched with suitable bushing or plug;

● It can operate under water and other harsh conditions for a long time;

● The built-in capacitance test point is used to determine the live state of the line and must be used in conjunction with a charged display;

● No requirement for minimum safety distance between phases;

● The installation can be vertical, horizontal or any angle.

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European-style front connector

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European-style rear connector

Product Features

● Provide fully shielded and fully sealed separable connection when matched with suitable bushing or plug;

● It can operate under water and other harsh conditions for a long time;

● The built-in capacitance test point is used to determine the live state of the line and must be used in conjunction with a charged display;

● No requirement for minimum safety distance between phases;

● The installation can be vertical, horizontal or any angle.

Product Features

● European-style rear arrester can provide reliable over-voltage protection for the electrical system. The shielded type followed by the outer semi-conductive layer of the arrester ensures the personal safety of the installation and maintenance personnel and the safe operation of the equipment. Its anti-ultraviolet, anti-aging, waterproof and moisture-proof characteristics ensure the safety and reliability of the product in harsh environments run.

● European-style rear arrester cooperates with European-style front connector to ensure safe operation of the power grid.

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European-style rear arrester

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π-type front connector

Product Features

● The π-type touchable front connector is used in the main network system of the ring main unit, the cable branch box or the ring network system of the box transformer, as the connection of the incoming and outgoing cables. It can be connected to the 630A bus bar, it also can be connected to the touchable rear connector for multi-combination connection to form a multi-circuit.

● The π-type touchable front connector has a rated current of 630A, suitable for power cables with a cross-section of 25-300mm2.

Product Features

● It can provide fully insulated and fully sealed separable connection when matched with a suitable bushing;

● Single pole, plug-in design;

● The bus bar is composed of copper bars, with a silicone rubber insulation layer on the surface;

● The busbar connection uses silicone rubber insulated terminal connectors and cross connectors;

● The shielded bus has no requirement for the minimum distance between phases, and is not affected by pollution and omission;

● The non-shielded bus must be equipped with a protective cover.

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Insulating bus

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Dedicated switchgear bus

Product Features

● When matched with C-type bushing, it can provide fully insulated and fully sealed separable connection;

● Single pole, plug-in design;

● The bus bar is composed of round copper rods (tubes) with a silicone rubber insulation layer on the surface;

● The shielded bus has no minimum phase-to-phase distance requirement, and is not affected by pollution and omission.


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