12kV

Green Gas-insulated AC Metal-enclosed Switchgear

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Eaton's range of SF6 free switchgear for Medium Voltage

An Eaton Green Solution

Eaton Corporation is a worldwide leader in the design, manufacture, and sale of safe, reliable and high-performance medium voltage power distribution equipment in accordance with lEC, ANSI and GB / DL standards

Complete Global Medium Voltage Switchgear Solutions

Eaton, a premier leader in designing and manufacturing power distribution and protection equipment in the electrical industry, offers a comprehensive range of medium voltage (MV) solutions to meet the needs of virtually every application. From products that feature cutting-edge design that allow for easy access, maintenance and space savings, to arc-resistant products that enhance safety, Eaton's medium voltage solutions provide a variety of products for every need. Additionally, Eaton's global service network provides maximum customer support in all regions of the world.

As one of the few completely vertically integrated and diversified industrial manufacturers in the world, Eaton designs not only MV assemblies, but also the key components that comprise the MV solutions – from steel housing and circuit breaker compartments to vacuum interrupters, circuit breakers, bus systems and fuses.

Eaton's MV heritage, strengthened by acquisitions such as Westinghouse DCBU, Cutler Hammer, MEM and Holec, has resulted in breakthrough MV technologies and numerous international patents over the years.

Part of Eaton's complete electrical PowerChain Solutions – which help businesses minimize risks while realizing greater reliability, cost efficiencies, capital utilization and safety - Eaton's medium voltage equipment meets all applicable standards and certifications such as IEC, NEMA / ANSl, GB / DL, UL, IEEE, KEMA and CSA.

When it comes to medium voltage solutions, you can trust the one name with a long history of proven performance: Eaton.

Green Gas-insulated AC Metal-enclosed Switchgear

General Overview

With many years of experience in the design, manufacture and application of Medium Voltage switchgear, Eaton pioneered the use of vacuum technology in the 1930s and introduced epoxy-resin insulation in the 1950s. Being at the forefront of technological advances, Eaton remains committed to product development, innovation, and improvement, while also striving to reduce size and cost.

Power Xpert GX is 12kV gas-insulated metal-enclosed high-voltage switchgear. The high-voltage parts are installed in a sealed stainless steel tank filled with low-pressure nitrogen or dry air as the insulating medium, which can effectively prevent adverse effects such as dirt, moisture, and external air pressure, improve the reliability of insulation, and have good anti-aging and anti-corrosion properties.

The product is suitable for 12kV three-phase AC 50Hz single busbar and single bus-sectional system. It controls, protects, and monitors power circuits of power plant power supply, substation, industrial and mining enterprises, etc., as well as high humidity (or condensation), high altitude, dirty and other harsh environment.

The materials in products are fully recyclable to ensure safety and effectively recycle after their life cycle.

Application segments

• Infrastructure

• Industries and corporations

• Data Center

• Airport and hospital

• Commercial building

Service Environment

• Ambient temperature: -5C\~+40℃

• Altitude: ≤1000m

• Ambient humidity: the daily average value of the relative humidity≤95%

• The daily average value of the water vapor pressure ≤2.2kPa

• The monthly average value of the relative humidity ≤90%

• The monthly average value of the water vapor pressure ≤1.8kPa

• Workplace: no obvious pollution by dust, smoke, corrosive and/or flammable gas, steam or salt spray; no place with fire, explosion, serious pollution, serious chemical corrosion and severe vibration

• Pollution level: Level II

• Earthquake intensity: ≤8 degrees

• The amplitude of the electromagnetic interference induced in the secondary system is ≤1.6kV

Note: Special conditions shall be negotiated by the user and the manufacturer

Main standard adopted

• GB/T 3906 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5kV

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

• GB/T 1984 High-voltage alternating-current circuit-breakers

• GB/T 1985 High-voltage alternating-current disconnectors and earthing switches

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

• IEC 62271-200 High-voltage switchgear and controlgear-Part200

Main advantages

• Stainless steel sealed gas tank with low pressure and very low leakage

• High-voltage components completely sealed in the gas tank to prevent environmental influences

• Vacuum Interrupter, maintenance-free during the service life

• Insulating and breaking performance guaranteed at zero-gauge pressure

• Nitrogen or dry air insulating medium with SF6 free, safe and environmentally friendly

• Modular design and flexible combination to meet various schemes

• Integrated design of VCB, Disconnector and Earthing switch, compact and simple structure;

• Compact design with smaller footprint than air-insulated switchgear

• No gas operation on-site, no special treatment procedures at the end of service life

Product Features and Structure

Structure classification

• Loss of Service Continuity Category: LSC2

• Partition Class: PM

• Gas filled compartment: non-accessible

• Cable compartment: Tool-based or interlock control

Sealed gas tank

In addition to the busbar coupler, the three-position disconnector and circuit breaker are installed in the sealed gas tank with a simple and compact structure

• Single gas tank, made of 304 stainless steel by laser welding, leakage rate is very low

• IP68 ingress protection, maintenance-free during service

Manometer/Density gauge is equipped in each tank to monitor the gas pressure and can provide low pressure alarm and lockout signals

• The rated insulating and breaking performance can be guaranteed even at zero-gauge pressure

Modular design

The switchgear is composed of several basic modules

• Gas tank

• Cable compartment

• Low voltage compartment

Integrated switch

• High reliable G-VAC vacuum circuit breaker, whose VIs are arranged horizontally in the gas tank, with compact structure

• The three-phase linear three-position disconnector combines the earthing switch function via a simple and reliable structure

• The three-position disconnector avoids possible maloperation of the disconnector and grounding switch in structure

• The cable side earthing is achieved by the VCB ensure strong making capacity

Reliable maintenance-free vacuum breaker

• The vacuum interrupter is maintenance during service life of up to 30 years

• Long life: 30,000 times mechanical life

• Tiny contact wear, no mechanism adjustment is required during the entire life cycle

Expandible Busbar System

The main busbar between switchgears can be expanded through a special busbar coupler

Interlocking

• Mechanical interlock between theVCB and the three-position disconnector prevent the disconnector/Earthing switch be operated while VCB closed

• The earthing switch is designed as one unit with the disconnector. The operation process ensures that the circuit can't energized and grounded at the same time

Arcing pressure relief

• A pressure relief valve is installed at the bottom of the gas tank. When an arc fault occurs in the gas tank, the internal pressure increases, triggering the pressure relief valve to release hot temperature and high-pressure gas to protect personnel

• Verified by 31.5kA 1s IAC test

Basic Structure

1. LV Compartment
2. Manometer/Density meter
3. Three-position disconnector mechanism
4. VCB mechanism
5. Cable connector
6. Rear plug-in surge arrester
7. Cable clamp
8. Cable compartment 18
9. Current transformer 17
10. Heater 16
11. Pressure relief chamber
15
12. Pressure relief valve
14
13. Outside cone bushing
13
14. Circuit breaker pole unit
15. Three-position disconnector 12
16. Branch busbar
11
17. Busbar coupler
18. Gas tank

Core Components

G-VAC vacuum circuit breaker

• Minimized parts and optimized electric field in primary circuit of breaker

• Spring-charge mechanism and modular structure simplify parts and ensure high reliability

• The spring will be automatically charged by motor after each time breaker is closed

• Manual and electrical operation. "Closing" and "Opening" manually achieved by pressing the green "I" and the red "O" button on the front of the circuit breaker

• Manual charge via pushing and pulling the handle up and down

• Electrical and mechanical closing interlock

• Equipped with counters and auxiliary switches

Integrated Three-position Disconnector

The three-phase linear three-position disconnector combines the earthing switch function, which realizes the three functions of connection, isolation and grounding. The dedicated mechanism is precisely manufactured and accurately transmitted to realize the connection, isolation and grounding operation.

• Either manual or motor operation available

• Manual operating torque no more than 10N·m. The closing and opening time no more than 4s at rated voltage

• 21-pin industrial connector

Busbar connection

The dedicated busbar coupler guarantees reliable connection of main busbar.

• Inner cone plug-in structure with silicone rubber insulation

• Electrical conductive spring ensures reliable contact and low resistance

• Single-phase structure provides more convenient on-site installation

Core Component

Current transformer

• Block type, bushing type or cable type CT available

• Ring type current transformer is easy to install

• CTs can also be installed in the gas tank

• Different ratio and burden can be selected to achieve measurement, and protection

Voltage transformer

· Plug-in VT coupled through the reserved socket installed in the gas tank

• Built-in fuse to achieve VT protection

• VTs can be installed on the cable side or busbar side

• Various ratios and parameters to meet project requirement

Surge arrester

• Plug-in type arrester

• Straight surge arrester can be directly plugged into the socket in gas tank

• Available rear plug-in surge arrester

Cable connection

• Outside cone bushing for cable connection

• Multi-cable connection can be achieved using T-type cable plug

• Maximum 500mm² cable connection

• Top or bottom cable entry

• Optional wireless temperature monitoring function

Technical Data

Basic Solution and Configuration

Solution		01Incomer&Feeder	02Incomer&Feeder	03 04 05 06 07Disconnector Bus-section Bus riser Busbar VT MeteringFeeder
SLD
Rated Current (A)		630~1250	630~1250	630~1250	630~1250	630~1250	630~1250	630~1250
Pimry nts	Circuit Breaker	1PCS	1PcS	1	1PCS	/	/	1
	Three-position Disconnector	1 PCS	1PCS	1PCS	$1 P C S$	${ 1 } \mathsf { P C S }$	1PCS	/
	Fuse	1	1	1	/	1	3 PCS	3 PCS
	Volage Transformer	1	1	1	1	1	3 PCS	3 PCS
	Current Transformer	3 PCS	3 PCS	3 PCS	1	3 PCS	1	3 PCS
	Surge Arrester	1	3 PCS	1	1	/	3 PcS	1
	Voltage Indicator	1Set	1Set	1Set	/	1	1Set	1Set

General Requirements for Switchgear Installation

The switchgear installation site and channel settings should comply with the relevant provisions of "GB 50053 Design Specifications for 20kV and Below Substations".

The installation foundation should comply with the relevant provisions of the "Technical Specifications for Construction and Acceptance of Power Construction".

The flatness error of the foundation shall not exceed 1mm per meter. The total length error shall not exceed 3mm.

According to the project needs and the drawings, the switchgear shall be transported to a specific location; if a row of switchgear is arranged (more than 10 units), it is recommended to start the assembly from the middle

Appropriate transportation tools such as cranes and forklifts should be used at site. It is strictly forbidden to use rollers and crowbars.

When installing, first level the first panel or the first connection surface to ensure both horizontal and vertical requirements.

The panel should be installed in order after calibrating the first one, paying attention to aligning the side holes with the connection surface of the installed switchgear.

1. The upper surface of the basic profile should be 2-5mm higher than the room floor after completion;

2. The flatness tolerance of the basic profile is ±1mm/m;

3. The straightness tolerance of the basic profile is ±1mm/m;

4. The height difference between two adjacent profiles is 0.5mm/m;

5. The depth of the cable channel should meet the bending radius of the primary cable. When laying the cable, the reserved cable length is 1.5m higher than the floor of the power distribution room. (reserved for cable terminal and connection)

6. The switchgear is fixed on the channel steel and adjusted to the level and connected with screws. (M12 screws are welded on the inside of the channel steel for easy connection)

Foundation and Floor Openings

A-A rotate

Transportation and Storage

The packaged product can be transported by electric forklift or crane.
The product is equipped with lifting rings for lifting, and the length of the lifting rope is not less than 2m.
The product should be stored in a dry, ventilated and dust-free place before installation.

Ordering Information

Included documents

• Product Qualification Certificate

• Routine test report

• Packing list

• User manual

• List of spare parts and accessories

• Secondary wiring diagram

• Other relevant materials required by the customer

Ordering information

It is required to provide the following information when placing an order:

· System wiring diagram, Single line diagram and floor plan

· Basic data including rated voltage, rated current, VCB breaking/making current , control voltage etc.

• Entry method, power cable size and quantity

· Special requirements for component model, specification and quantity (if any, please list)

• For special service environments or requirements, please contact Eaton first

Spare parts and accessories

The accessories of switchgear include:

• Disconnector/Earthing switch operating handle

• Door key & Door locking handle

• Special tools kit

Spare parts include:

• Pressure gauge

• VT Protection fuse

• Opening coil

• Closing coil

• Voltage indicator

• Indication lamp

• Transfer switch

……

The spare parts list is ultimately determined by both the supplier and the buyer according to the customer's requirements.

Eaton is an intelligent power management company dedicated to protecting the environment and improving the quality of life for people everywhere. We make products for the data center, utility, industrial, commercial, machine building, residential, aerospace and mobility markets. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power— today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we're accelerating the planet's transition to renewable energy sources, helping to solve the world's most urgent power management challenges, and building a more sustainable society for people today and generations to come.

Eaton was founded in 1911 and has been listed on the New York Stock Exchange for more than a century. We reported revenues of $23.2 billion in 2023 and serve customers in more than 160 countries. Eaton entered the Chinese market in 1993 and has grown significantly since then. In 2004, Eaton moved its Asia-Pacific headquarters from Hong Kong to Shanghai. Today, Eaton has nearly 8,000 employees and 19 manufacturing facilities in China.

For more information about Eaton China, visit www.eaton.com.cn