7.2KV 2000A Modular Switchgear Power Distribution Cabinet

Standards compliant:

GB3906-2006 "3.6~40.5kV AC metal-enclosed switchgear and control equipment"

GB11022-89 "General Technical Conditions for High Voltage Switchgear"

IEC298(1990) "AC metal-enclosed switchgear and control equipment with rated voltages above 1kV and 50kV and below"

DL404-97 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear"

Normal usage environment

◆ Bordering air temperature level: optimum temperature level +40 ℃, minimum temperature -15 ℃;

◆ Loved one humidity: Daily average loved one moisture: ≤ 95%, everyday typical water vapor pressure does not exceed 2.2 KPa; Monthly ordinary family member moisture ≤ 90%; The regular monthly typical water vapor stress does not go beyond 1.8 KPa; Altitude: ≤ 1000m;

◆ Earthquake strength: not surpassing level 8;

◆ The bordering air should not be significantly contaminated by destructive or combustible gases, water vapor, etc;

◆ No areas with extreme resonance;

◆ When using past the regular conditions specified in GB3906, the customer and our firm shall bargain

Functions and features

The 7.2KV 2000A Modular Switchgear Power Distribution Cabinet is crafted in accordance with the armored metal-enclosed switchgear standard GB3906-91, comprising two main components: the cabinet and the central pull-out portion (also known as the handcart). The cabinet is segmented into four distinct compartments, offering an enclosure protection level of IP4X. When the doors of each small compartment and the circuit breaker room are open, the protection level is IP2X. This switchgear features overhead incoming and outgoing lines, cable incoming and outgoing lines, and various functional solutions. After configuration and combination, it forms a comprehensive power distribution system device. Its front-accessible design allows for easy installation, debugging, and maintenance, enabling back-to-back, double, and wall-mounted installations, which enhance safety, flexibility, and space efficiency.

Main technical parameters of 7.2KV 2000A Modular Switchgear Power Distribution Cabinet

Main technical parameters of vacuum switchgear

When utilizing a circuit breaker to regulate a 3-10KV motor, the addition of a metal zinc oxide lightning arrester is necessary if the starting current falls below 600A. The specific requirements for this arrangement are determined through discussion between the user and our company. In the event that the circuit breaker is used to disconnect the capacitor bank, the rated current of the capacitor must not exceed 80% of the rated current of the circuit breaker.

Technical parameters of operating mechanism

The 7.2KV 2000A Modular Switchgear Power Distribution Cabinet is designed according to the armored metal enclosed switchgear in GB3906-91. The entire is made up of 2 mainparts: a cupboard and a central with drawable spare component (i.e. a handcart) (see Figure 1). The closet is separated right into four different areas, with an enclosure defense degree of IP4X. When the doors of each compartment and breaker area are opened, the protection level is IP2X. Furnished with above incoming and outgoing lines, cable inbound and outgoing lines, and various other functional systems, set up and incorporated to create a full collection of power circulation system tools. This switchgear can be set up, debugged, and kept from the front, so it can be back-to-back, organized in a dual plan, and mounted against the wall, enhancing the safety and security, adaptability, and decreasing the impact of the switchgear.

◆ Covering and others

The major frame of the switchgear is made from aluminum zinc thin steel plate, processed by CNC machine device, and takes on multiple folding process, which not only has the advantages of high accuracy, strong corrosion resistance and oxidation resistance, yet likewise makes the closet lighter in weight, greater in mechanical stamina, and more cosmetically pleasing in appearance contrasted to various other similar devices cupboards as a result of the use of numerous folding process. The cabinet adopts a constructed structure, attached by rivet nuts and high-strength bolts, which shortens the processing cycle, enhances the universality of components, occupies less room, and is convenient for organizing manufacturing.

◆ Handcarf

The handcart framework is constructed from slim steel plates refined by CNC maker tools. The handcart and cupboard are protected and coordinated, and the interlacing mechanism is secure, dependable, and adaptable. According to their use, handcart can be separated right into circuit breaker handcart, voltage transformer handcart, metering handcart, seclusion handcart, and various other kinds of handcart. According to component and block kind variations, handcart of the very same requirements can be freely exchanged 100%. The handcart has a disconnection placement, a testing position, and a working placement inside the cupboard. Each position is geared up with a positioning tool to guarantee reputable. interlocking. The procedure has to be executed according to the interlacing defense procedures operation procedure. All handcart makes use of nuts and screws to relocate and exit, and its procedure is light and flexible, ideal for at work employees to run. When the handcart demands to be moved away from the cupboard, a devoted transfer vehicle can be quickly pulled out for various evaluations and upkeep, And it embraces a mid mounted design, with a tiny volume for examination, maintenance, and ease.

◆ Compartment

The primary electric elements of the switchgear have independent areas, specifically: circuit breaker handcart space, busbar room, wire room, relay instrument area. The defense degree in between each compartment gets to lP2x; Besides the relay, all other three styles have their own pressure relief networks. As a result of using a central design, the wire area space is significantly boosted, enabling the equipment to connect numerous cords.

◆ Circuit breaker Area

Tracks are set up on both sides of the compartment for handcart 5 to move and move from the disconnected placement and examination position to the functioning position inside the closet. The dividing 3 (valve) of the fixed contact box 16 is installed behind the rear wall of the handcart compartment. When the handcart moves from the detached position examination setting to the working setting, the flaps on the top and lower static get in touch with boxes are related to the handcart and automatically open. When relocating the opposite instructions, the flaps instantly close till the handcart returns to a specific placement and completely covers the static contact box, creating reliable seclusion. As a result of the different procedure of the top and lower valves, during upkeep, the valve on the live side can be secured to guarantee that upkeep employees do not touch the live body. When the circuit breaker room door is closed, the handcart can likewise be operated.

Via the monitoring window of the middle door, the position of the handcart being gotten rid of and enclosed the area can be observed, and the energy storage space condition can be displayed.

◆ Busbar Area

The primary busbar 18 is a solitary device entwined and linked to every other, dealt with by the main busbar 20 and the fixed contact box. The main busbar and connecting busbar are copper bars with rectangle-shaped cross-sections, made use of for high currents. When composite, dual busbars are made use of to construct them. The branch busbar is connected to the static get in touch with box 16 and the major busbar via bolts and does not require any other assistance. For special needs, the busbar can be covered with warm diminish tubing, insulation sleeves with linking bolts, and end caps. Nearby closet busbars are fixed with sleeve 19, to make sure that the air barrier maintained in between the attaching busbars can stop melting in case of inner fault arcs. Sleeve 19 can successfully restrict mishaps to this closet and not spread to various other cupboards.

Overall dimensions

Installation of switchgear

Schematic diagram of switchgear structure

◆ The complying with diagram shows the structural parts of the switchgear. All metal modular setting up framework, the cabinet body is made from imported light weight aluminum zinc covered plate with strong anti-corrosion ability, without surface area therapy. It is refined by CNC high-precision devices and adopts sophisticated multiple folding process. The link is connected with rivet nuts and high-strength bolts, with high accuracy, lightweight, and good strength.

◆ The switchgear can be outfitted with our business's VS1 series, VD4 series, ZN65 series and other vacuum cleaner breaker, with large applicability and strong interchangeability. The handcart is geared up with a functioning placement, a testing setting, and placing and display tools at each setting, ensuring safety and security and dependability.

◆ The cable room can suit as much as 9 single core cables, and the devices is geared up with reputable mechanical and electrical interlocking gadgets, completely meeting the "five avoidance" needs. Each area is outfitted with pressure alleviation channels to ensure individual safety and security during operation.