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                    40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear

                    40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear

                    The engineering construction industry has evolved significantly in recent years, driven by societal and economic growth, as well as rapid technological advancements. This has led to a rising demand for more sophisticated and efficient switch equipment that requires minimal upkeep and boasts intelligent features. In response, both domestic and international switch manufacturers are vigorously developing 40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear, also known as gas-insulated switchgear (C-GIS). These innovative devices enclose high-voltage components, including busbars, circuit breakers, isolating switches, and power cables, within a protective shell that maintains a lower gas pressure.

                    Model:40.5KV 2500A gas insulation electrical switchgear

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                    Product Description

                    Product Features

                    1. By using sulfur hexafluoride gas as a protecting and arc extinguishing medium, the dimension of the switchgear can be greatly reduced, leading to a more portable and smaller sized design.

                    2. The conductive part of the major circuit, which is very trustworthy and secure, is secured in SF6 gas, maintaining the high-voltage real-time conductor enclosed and untouched by outside factors. This makes certain long-term secure operation and high dependability of the equipment.

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

                    4. The 40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear is created with an independent modular structure, with the air box made of high-precision light weight aluminum plate and can be taken apart. The isolation button embraces a linear transmission with 3 settings. To reduce control relay and circuit confusion, an additional control module with almost 100 PLC factors is included for grounding, isolation button, and remote procedures. The system button is modular, connecting opening and closing factors with plum bloom get in touches with. This gets rid of the opportunity of non-operation in the initial rotary isolation button and basing switch, deals with the problem of unpredictable and extreme call resistance in the original rotary isolation switch, and consists of shielding and voltage equalization covers on each contact's outside to resolve partial discharge problems during button breakpoints manufacturing.

                    5. The 40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear is convenient to use and set up. It can be utilized as an independent unit and meet various major circuitry requirements via combination. Providing it to the website as units can reduce on-site installation and improve dependability.


                    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 C-GIS gas-insulated switchgear is available in a range of current levels, including 630A, 1250A, 1600A, 2000A, 2500A, 3150A, and others. The cabinet's size can be tailored to meet specific requirements. The exterior is constructed from aluminum zinc-coated plates, while the gas box is made from high-quality 304 stainless steel plates, welded for durability. The units can be expanded and combined independently, according to the design plan. The cabinet of 40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear is divided into several rooms, including a secondary control room, busbar room, circuit breaker room, circuit breaker operating mechanism room, and cable room. The cable connection height is up to 700mm, facilitating maintenance and installation. The cabinet also features a comprehensive grounding protection system. The switchgear consists of isolated functional compartments, such as switch rooms, busbar rooms, cable rooms, and secondary circuit channels. Each functional compartment is separated by a grounding metal partition and operates independently.


                    Secondary control room

                    The cabinet is positioned beneath the secondary control room and features boards for placing components and brackets for securing terminal blocks. In the secondary control room, you can set up different devices like wiring terminals, small busbar terminals, and comprehensive protection devices. These devices facilitate functions like remote control, telemetry, remote signaling, and local monitoring. Circular openings on the side panels and terminals on both sides simplify connecting the cabinet with small busbars.


                    Bus Compartment

                    The top air enclosure includes both the busbar area and the isolation device. The circuit cabinets and busbars on both sides are tightly connected by merging the cabinets after they are placed on the ground support.


                    Switch Room

                    The 40.5KV 2500A HV Gas Insulated Switchgear Electrical Switchgear features a dual-chamber design, with one chamber situated above the other, at the center of the cabinet. 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 arranged vertically. While the single-chamber design is simpler, less expensive, and easier to manufacture, it has lower reliability due to the close proximity of components. In contrast, the multi-chamber design offers high safety by minimizing interference between components and enabling easy replacement. However, it is more complex, more challenging to manufacture, and costlier.


                    Institutional Room

                    The spring-driven system is located on a level surface, where the isolation and circuit breaker components are distinct from each other. It is connected to the insulation rod of the vacuum arc extinguishing chamber both before and after, streamlining the transfer process. The system's performance matches well with the circuit breaker's operations, leading to lower energy consumption and improved mechanical durability and adaptability..


                    Cable Room

                    The cabinet is located above the cable room and is equipped with its own pressure relief route. The height between the ground and the cable connection terminals can reach up to 700mm. Grounding interlocks, which adhere to regulations, are included in the cable room to accommodate the setup of two cables and lightning arresters in every circuit. Additionally, the internal cone insertion technique facilitates the connection of incoming and outgoing cables along with lightning arresters..




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