12KV 2500A High Current Customized Electrical Switchgear

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 of 12KV 2500A High Current Customized Electrical Switchgear

The 12KV 2500A High Current Customized Electrical Switchgear is structured based on the armored metal-enclosed switchgear in GB3906-91. It consists of two main components: the cabinet and the central pull-out part known as the handcart. The cabinet is divided into four distinct compartments, with an enclosure protection level of IP4X. Opening the doors of the smaller compartments and the circuit breaker room reduces the protection level to IP2X. It features overhead incoming and outgoing lines, cable connections, and various functional configurations. By arranging and assembling these components, it creates a comprehensive power distribution system device. This switchgear allows for front installation, debugging, and maintenance, enabling back-to-back, double arrangement, or wall mounting options. These features enhance safety, flexibility, and space efficiency.

Main technical parameters of 12KV 2500A High Current Customized Electrical Switchgear

Main technical parameters of vacuum switchgear

Negotiations between the user and our company determine the specific conditions for adding a metal zinc oxide lightning arrester when using the circuit breaker to regulate the 3-10KV motor with a starting current of less than 600A. If the circuit breaker is being used to disconnect the capacitor bank, the rated current of the capacitor must not surpass 80% of the rated current of the circuit breaker.

Technical parameters of operating mechanism

The 12KV 2500A High Current Customized Electrical Switchgear is developed according to the armored metal confined switchgear in GB3906-91. The whole is composed of two primary components: a cabinet and a central withdrawable spare part (i.e. a handcart) (see Figure 1). The cupboard is divided into four separate compartments, with an unit defense degree of IP4X. When the doors of each area and circuit breaker space are opened, the protection level is IP2X. Furnished with overhead incoming and outward bound lines, cable incoming and outward bound lines, and other useful schemes, organized and combined to form a complete collection of power distribution system devices. This switchgear can be mounted, debugged, and kept from the front, so it can be back-to-back, prepared in a dual setup, and mounted against the wall, boosting the safety, flexibility, and reducing the footprint of the switchgear.

◆ Covering and others

The primary framework of the switchgear is made of light weight aluminum zinc thin steel plate, processed by CNC equipment device, and adopts multiple folding process, which not only has the advantages of high precision, strong corrosion resistance and oxidation resistance, however likewise makes the cabinet lighter in weight, greater in mechanical stamina, and a lot more aesthetically pleasing in look compared to various other comparable devices closets because of using several folding process. The closet adopts a constructed structure, attached by rivet nuts and high-strength bolts, which reduces the processing cycle, boosts the universality of components, occupies less room, and is convenient for organizing production.

◆ Handcarf

The handcart structure is constructed from thin steel plates refined by CNC machine devices. The handcart and cabinet are protected and worked with, and the interlacing mechanism is risk-free, reliable, and flexible. According to their use, handcart can be separated into circuit breaker handcart, voltage transformer handcart, metering handcart, isolation handcart, and other sorts of handcart. According to module and block kind variations, handcart of the very same specification can be openly exchanged 100%. The handcart has a disconnection setting, a testing position, and a working placement inside the closet. Each position is furnished with a positioning device to ensure dependable interlocking. The operation has to be accomplished according to the interlocking security steps operation treatment. All handcart makes use of nuts and screws to move and exit, and its operation is light and adaptable, ideal for working workers to operate. When the handcart requirements to be relocated far from the cupboard, a committed transfer vehicle can be quickly taken out for different examinations and upkeep, And it adopts a mid mounted layout, with a small volume for evaluation, maintenance, and convenience.

◆ Compartment

The main electric parts of the switchgear have independent areas, namely: circuit breaker handcart space, busbar area, cable television room, relay instrument room. The security level in between each area gets to lP2x; Besides the relay, all other three formats have their very own pressure relief networks. Because of making use of a main format, the wire area space is significantly raised, allowing the tools to attach multiple cables.

◆ Breaker Area

Tracks are installed on both sides of the compartment for handcart 5 to relocate and move from the disconnected position and examination position to the functioning setting inside the cabinet. The dividers 3 (shutoff) of the fixed call box 16 is installed behind the back wall of the handcart area. When the handcart relocates from the disconnected setting test placement to the functioning position, the flaps on the top and reduced fixed contact boxes are related to the handcart and automatically open. When relocating the contrary direction, the flaps immediately close up until the handcart returns to a specific setting and completely covers the static call box, creating effective seclusion. Due to the separate operation of the upper and reduced shutoffs, throughout upkeep, the valve on the live side can be secured to make certain that upkeep workers do not touch the online body. When the breaker room door is shut, the handcart can additionally be operated.

Via the observation window of the center door, the position of the handcart being thrown away and enclosed the compartment can be observed, and the power storage standing can be presented.

◆ Busbar Compartment

The main busbar 18 is a solitary unit entwined and linked to every various other, dealt with by the major busbar 20 and the static call box. The main busbar and connecting busbar are copper bars with rectangular cross-sections, made use of for high currents. When composite, double busbars are used to assemble them. The branch busbar is linked to the fixed get in touch with box 16 and the main busbar with screws and does not require any other support. For special needs, the busbar can be covered with heat reduce tubes, insulation sleeves with linking bolts, and end caps. Surrounding cabinet busbars are taken care of with sleeve 19, so that the air barrier maintained in between the attaching busbars can avoid melting in the event of internal fault arcs. Sleeve 19 can properly restrict crashes to this cabinet and not spread to other cabinets.

Overall dimensions

Installation of switchgear

Schematic diagram of switchgear structure

◆ The complying with layout reveals the structural components of the switchgear. All steel modular setting up framework, the cabinet body is constructed from imported light weight aluminum zinc layered plate with solid anti-corrosion capability, without surface area treatment. It is refined by CNC high-precision equipment and adopts sophisticated several folding process. The link is connected with rivet nuts and high-strength bolts, with high precision, lightweight, and good stamina.

◆ The switchgear can be geared up with our firm's VS1 collection, VD4 collection, ZN65 collection and other vacuum breaker, with vast applicability and solid interchangeability. The handcart is furnished with a functioning setting, a testing placement, and positioning and screen devices at each placement, ensuring safety and security and dependability.

◆ The cord space can suit approximately 9 solitary core cables, and the equipment is outfitted with dependable mechanical and electric interlocking tools, completely satisfying the "five prevention" requirements. Each space is furnished with stress alleviation networks to guarantee individual security during operation..