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12KV 2000A High Current Gas Insulated Electrical Switchgear

12KV 2000A High Current Gas Insulated Electrical Switchgear

In recent years, with the growth of society and advancements in technology, engineering construction has become increasingly intricate. There is a rising demand for compact switch equipment that is easier to maintain and features intelligent functions. Manufacturers of switchgear, both locally and internationally, are focusing on developing 12KV 2000A High Current Gas Insulated Electrical Switchgear, which are also referred to as gas-insulated switchgear (C-GIS). These switchgear units house high-voltage elements like busbars, circuit breakers, isolating switches, and power cables within a shell that operates at reduced gas pressure.

Model:12KV 2000A electrical switchgear

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Product Description

Product Features

1. By utilizing sulfur hexafluoride gas as a protecting and arc extinguishing tool, the size of the switchgear can be greatly lowered, resulting in a much more small and smaller sized design.

2. The conductive part of the primary circuit, which is extremely reliable and secure, is sealed in SF6 gas, keeping the high-voltage online conductor enclosed and unaffected by outside elements. This ensures long-term secure operation and high integrity of the tools.

3. There is no threat of electric shock or fire.

4. The 12KV 2000A High Current Gas Insulated Electrical Switchgear is developed with an independent modular framework, with the air box constructed from high-precision aluminum plate and can be dismantled. The isolation switch takes on a straight transmission with three settings. To reduce control relay and circuit confusion, an added control component with virtually 100 PLC points is included for grounding, isolation button, and remote procedures. The mechanism switch is modular, linking opening and closing factors with plum blossom get in touches with. This removes the possibility of non-operation in the original rotating seclusion switch and grounding button, solves the concern of unpredictable and excessive contact resistance in the initial rotary isolation button, and includes shielding and voltage equalization covers on each call's exterior to address partial discharge issues during button breakpoints manufacturing.

5. The gas-insulated switchgear is convenient to use and set up. It can be used as an independent device and satisfy various main circuitry demands through combination. Delivering it to the site as systems can shorten on-site installment and boost integrity.

 Execution standards

IEC 62271-200: 2011 High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

IEC 62271-102:2013 6.2 High-voltage switchgear and controlgear - Part 102: Alternating current disconnectors and earthing switches

IEC 62271-100: 2017.6.2 High-voltage switchgear and controlgear - Part 100: Alternating-current circuit-breakers

GB/T11022-1999 Common technical requirements for high-voltage switchgear and control equipment standards

GB3906-2006 3.6kV~40.5kV AC Metal Enclosed Switchgear and Control Equipment

GB311.1-1997 Insulation Coordination of High Voltage Transmission and Transformation Equipment

GB/T16927.1-1997 High voltage testing technology Part: General test requirements

GB/T16927.2-1997 High voltage testing techniques Part 2: Measurement systems

GB/T7354-2003 Partial discharge measurement

GB1984-1989 AC High Voltage Circuit Breakers

GB3309-1989 Mechanical tests of high-voltage switchgear at room temperature

GB4208-2008 Code for Degree of Protection Provided by Enclosures (IP)

GB12022-2006 Industrial sulfur hexafluoride

GB8905-1988 Guidelines for gas management and inspection in sulfur hexafluoride electrical equipment

GB11023-1989 Test method for sulfur hexafluoride gas sealing of high-voltage switchgear

GB/T13384-1992 General technical requirements for packaging of electromechanical products

GB4207-2003 Solid insulation materials - Determination of relative and resistance to electrical trace index under humid conditions

GB/T14598.3-2006 Electrical relays - Part 5: Insulation of electrical relays

GB/T17626.2-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Electrostatic Discharge Reactance Interference Test

GB/T17626.4-2008 Electromagnetic Compatibility Testing and Measurement Techniques - Electrical Fast Transient Pulse Group Immunity Test

GB/T17626.5-2008 Electromagnetic Compatibility Testing and Measurement Techniques - Surge (Impulse) Immunity Test

GB/T17626.12-1998 Electromagnetic Compatibility Testing and Measurement Techniques - Oscillating Wave Immunity Test

Test Type

◆ Insulation test

◆ Temperature rise test

◆ Loop resistance measurement

◆ Short-time withstand current and peak withstand current tests.

◆ Verification of making and breaking capabilities

◆ Mechanical operation and mechanical characteristic testing tests

◆ Protection level detection

◆ Additional tests on auxiliary and control circuits

◆ Pressure tolerance test for inflatable compartments

◆ Sealing test

◆ Internal arc test

◆ Electromagnetic compatibility test

Basic Scheme

Operation Condition

Technical Parameter

Grounding and Separation

The 12KV 2000A High Current Gas Insulated Electrical Switchgear C-GIS is available in a range of current capacities, including 630A, 1250A, 1600A, 2000A, 2500A, 3150A, and more. The cabinet's size can be tailored to meet specific requirements. The exterior is crafted from aluminum zinc-coated plates, while the gas box is made from high-quality 304 stainless steel plates, ensuring durability. The units can be expanded and combined independently, and the cabinet features several rooms, including a secondary control room, busbar room, circuit breaker room, circuit breaker operating mechanism room, and cable room. The cabinet's cable connection height reaches 700mm, facilitating maintenance and installation. Additionally, the switchgear boasts a comprehensive grounding protection system, and each functional compartment, such as switch rooms, busbar rooms, cable rooms, and secondary circuit channels, is separated by a grounding metal partition that operates independently.

Secondary control room

The cabinet is situated beneath the secondary control room and features boards for component installation and brackets for securing terminal blocks. The secondary control room is designed to accommodate various devices, including wiring terminals, small busbar terminals, and comprehensive protection devices. These devices enable the system to perform a range of functions, such as remote control, telemetry, remote signaling, and local monitoring. The cabinet's left and right side panels have circular holes and terminals, facilitating connection to small busbars.

Busbar Compartment

The upper portion of the apparatus houses both the busbar chamber and the isolation system. The circuit cabinets and busbars situated on either side are connected via cabinet merging, which occurs once the cabinet is positioned on the ground support.

Switch Room

The 12KV 2000A High Current Gas Insulated Electrical Switchgear features a plate-type design comprising two chambers stacked on top of each other, situated at the cabinet's center. The upper chamber houses a three-position isolation switch, while the lower chamber is equipped with a vacuum circuit breaker. The busbar, isolation switch, and circuit breaker are aligned vertically. A single-chamber configuration is straightforward, cost-effective, and simple to produce but has reduced reliability due to the close proximity of components. Conversely, the multi-chamber setup offers enhanced safety by preventing component interference and facilitating easy replacement. However, it is a more intricate, costly, and challenging manufacturing alternative.

Institutional Room

The spring-driven system is located on a level surface, with the isolation and circuit breaker mechanisms kept separate. It is connected to the insulation rod of the vacuum arc extinguishing chamber both before and after, streamlining the transfer process. The performance of the system more closely matches the circuit breaker's actions of opening and closing, leading to lower energy consumption and improved mechanical dependability and adaptability.

Cable Room

The cabinet is located above the cable room and includes a separate pressure relief route. The height between the floor and the cable connection points can reach up to 700mm. To adhere to standards, grounding interlocks are included in the cable room to accommodate two cables and lightning arresters in every circuit. Additionally, the internal cone insertion technique links the incoming and outgoing cables and lightning arresters.

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