35kv 4000 amp mv switchgear

The New Armored Removable AC Metal-Enclosed Switchgear, a testament to advanced switchgear technology, is specifically crafted for three-phase AC power systems with a rated voltage of 35kV. It accommodates rated currents ranging from 630a to 3150a and operates at a frequency of 50Hz. This cutting-edge equipment not only facilitates the efficient transfer and distribution of electric energy but also offers advanced control, protection, and monitoring capabilities for electrical circuits, ensuring optimal performance and reliability, and most importantly, safety.

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

◆Surrounding air temperature: maximum temperature+40 ℃, minimum temperature -15 ℃:

◆Relative humidity: Daily average relative humidity: ≤ 95%, daily average water vapor pressure does not exceed 2.2KPa; Monthly average relative humidity ≤ 90%; The monthly average water vapor pressure does not exceed 1.8KPa; Altitude: ≤ 1000m:

◆Earthquake intensity: not exceeding level 8;

◆The surrounding air should not be significantly polluted by corrosive or combustible gases, water vapor, etc;

◆No places with severe vibration;

◆When using beyond the normal conditions specified in GB3906, the user and our company shall negotiate

Functions and features

The switchgear, constructed based on the specs of the armored metal-enclosed switchgear described in GB3906-91, comprises two major elements: the closet and the main pull-out part, also known as the handcart. The cabinet is fractioned into four unique compartments, and it is rated IP4X for enclosure security. Unlocking each compartment and the circuit breaker room reduces the security level to IP2X. This switchgear provides solutions for overhead incoming and outbound lines, wire connections, and various other performances. Its front accessibility allows for easy installation, testing, and servicing, facilitating back-to-back, double-plan, and wall-mounted setups. The switchgear's user-friendly design features not only enhance safety and flexibility but also ensure convenient maintenance, thereby improving floor space utilization.

Main technical parameters

Main technical parameters of vacuum switchgear

When using a breaker to control a 3-10KV motor, a metal zinc oxide lightning arrester is mandatory if the starting current drops below 600A. The requirements for this setup are not just dictated but identified through a conversation between the user and our company. Your role in this process is crucial. It's important to understand that the capacitor financial institution's rated current must be at most 80% of the breaker's rated present when the breaker is employed to separate the capacitor bank.

Technical parameters of operating mechanism

The switchgear is made according to the armored metal confined switchgear in GB3906-91. The whole is made up of 2 primary parts: a cupboard and a central withdrawable added element (i.e., a handcart) (see Figure 1). The cupboard is divided right into four various areas, with a unit protection level of IP4X. When the doors of each location and circuit breaker area are opened, the protection level is IP2X. Outfitted with above incoming and outward bound lines, cable incoming and outbound lines, and other functional schemes, organized and incorporated to create an overall collection of power circulation system devices. This switchgear can be established, debugged, and preserved from the front, so it can be back-to-back, organized in a double arrangement, and installed versus the wall, enhancing safety and security, flexibility, and decreasing the footprint of the switchgear.

◆ Shell and others.

The primary structure of the switchgear is constructed from aluminum zinc slim steel plate, refined by a CNC manufacturer device, and tackles countless folding treatments, which not only has the advantages of high accuracy, strong wear, and tear resistance, and oxidation resistance but likewise makes the closet lighter in weight, higher in mechanical endurance, and added cosmetically pleasing in look compared to various other equivalent gadgets cupboards due to taking advantage of several folding treatments. The cabinet adopts an established structure, connected by rivet nuts and high-strength screws, which shortens the processing cycle, improves the universality of parts, inhabits a lot less space, and is convenient for organizing manufacturing..

◆ Handcarf.

The handcart structure is assembled from thin steel plates improved by CNC equipment devices. The handcart and cupboard are protected and. collaborated, and the interlocking system is safe, trusted, and flexible. According to their usage, handcarts can be divided right into circuits. Breaker handcart, voltage transformer handcart, metering handcart, isolation handcart, and various other types of handcart. According to component and block kind variants, handcart of the specific same needs can be freely exchanged 100%. The handcart has an interference placement, a testing setting, and a functioning setup inside the cupboard. Each positioning is gotten ready with a placing gadget to make certain trustworthy. Interlocking. The procedure needs to be carried out according to the interlocking protection treatment procedure therapy. All handcart makes use of nuts and screws to move and exit, and their procedure is light and functional, suitable for working employees to run. When the handcart. Requirements to be relocated far from the wardrobe, a committed transfer automobile can be easily pulled out for different examinations and maintenance. It tackles a mid-positioned layout with a small quantity for analysis, maintenance, and benefit..

◆ Compartment.

The major electrical aspects of the switchgear have independent locations: breaker handcart space, busbar space, cable area, and relay instrument room. The protection degree between each location is lP2x; except for the relay, all other three designs have their pressure relief channels. Using a major layout considerably boosts the wire space location, making it possible for the devices to link several wires..

◆ Breaker Location.

Tracks are installed on both sides of the area for handcart 5 to relocate and glide from the detached placement and assessment setup to the functioning setting inside the cabinet. The dividing 3 (shutoff) of the repaired call box 16 is placed behind the rear wall surface area. Handcart area. When the handcart moves from the separated positioning test placement to the operating setup, the flaps on the. Top and reduced fixed connect with boxes belong to the handcart and right away open. When moving the contrary instructions, the flaps promptly shut until the handcart returns to a certain position and totally covers the fixed contact box, producing dependable privacy. Because of the different treatment of the top and reduced shutoffs, during maintenance, the shutoff on the online side can be locked to ensure that. Upkeep workers do not touch the real-time body. When the circuit breaker area door is closed, the handcart can additionally be run. With the monitoring home window of the center door, the placement of the handcart being gotten rid of and closed in the area can be observed, and the energy storage status can be displayed..

◆ Busbar compartment.

The major busbar 18 is a single device mated and connected to different other, fixed by the major busbar 20 and the fixed contact box. The significant busbar and. connecting busbar are copper bars with rectangle-shaped cross-sections utilized for high currents. When composite, twin busbars are used to assemble them. The branch busbar is attached to the fixed get-in-touch with box 16 and the primary busbar by means of screws and does not ask for any other help. For unique demands, the busbar can be covered with cozy lower tubes, insulation sleeves with linking screws, and end caps. Neighboring wardrobe busbars are repaired with sleeve 19 to guarantee that the air buffer maintained in between the linking busbars can stay clear of melting in the event of interior blunder arcs. Sleeve 19 can efficiently restrict mishaps to this cabinet and not spread to other cupboards.

Overall dimensions

Installation of switchgear

Schematic diagram of switchgear structure

◆ The adhering to depiction discloses the architectural components of the switchgear. All metal modular setting up framework, the cabinet body is created from imported lightweight light weight aluminum zinc layered plate with strong anti-corrosion capacity, without surface therapy. It is fine-tuned by CNC high-precision equipment and welcomes cutting-edge numerous folding procedures. The web link is gotten in touch with rivet nuts and high-strength screws, with high precision, lightweight, and good toughness.

◆ The switchgear can be provided with our company's VS1 collection, VD4 collection, ZN65 collection, and various other vacuum breakers, with wide applicability and strong interchangeability. The handcart is ready with a working setting, a screening position, and placing and display screen gadgets at each setup, ensuring protection and stability.

◆ The cord area can suit as high as nine solitary core cable TVs. The devices are furnished with reputable mechanical and electric interlocking devices, entirely satisfying the "5 avoidance" demands. Each area is equipped with stress and anxiety relief networks to guarantee private protection throughout the procedure.

Figure 1