12KV 3150A Customized Hige Current Eletrical 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 of 12KV 3150A Customized Hige Current Eletrical Switchgear

◆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 3150A Customized Hige Current Eletrical Switchgear

The switchgear is constructed based on the specifications of the armored metal-enclosed switchgear outlined in GB3906-91. It consists of two main components: the cabinet and the central pull-out part known as the handcart. The cabinet is segmented into four distinct compartments, and it has an enclosure protection rating of IP4X. Opening the doors of each compartment and the circuit breaker room lowers the protection level to IP2X. This switchgear features solutions for overhead incoming and outgoing lines, cable connections, and other functionalities. It can be easily installed, tested, and serviced from the front, allowing for back-to-back, double arrangement, and wall-mounted installations. These design features enhance the safety and flexibility of the switchgear while optimizing floor space utilization.

Main technical parameters of 12KV 3150A Customized Hige Current Eletrical Switchgear

Main technical parameters of vacuum switchgear

When utilizing a circuit breaker to regulate a 3-10KV motor, the implementation of a metal zinc oxide lightning arrester is mandatory if the starting current falls below 600A. The specifications for this arrangement are determined through discussion between the user and our company, with the stipulation that the capacitor bank's rated current must not surpass 80% of the circuit breaker's rated current when the circuit breaker is employed to disconnect the capacitor bank.

Technical parameters of operating mechanism

The 12KV 3150A  Customized Hige Current Eletrical Switchgear is made according to the armored metal confined switchgear in GB3906-91. The entire is composed of two primary components: a cupboard and a central withdrawable extra component (i.e. a handcart) (see Figure 1). The cupboard is divided right into four different areas, with an enclosure defense degree of IP4X. When the doors of each area and circuit breaker room are opened, the defense level is IP2X. Equipped with above inbound and outgoing lines, wire incoming and outbound lines, and other functional schemes, organized and incorporated to develop a total collection of power distribution system gadgets. This switchgear can be set up, debugged, and preserved from the front, so it can be back-to-back, organized in a dual setup, and installed versus the wall, enhancing the safety, flexibility, and lowering the footprint of the switchgear.

◆ Covering and others

The primary structure of the switchgear is made of aluminum zinc slim steel plate, processed by CNC maker device, and takes on numerous folding procedure, which not only has the advantages of high accuracy, solid deterioration resistance and oxidation resistance, but also makes the cabinet lighter in weight, higher in mechanical stamina, and extra cosmetically pleasing in appearance compared to various other comparable devices cabinets due to making use of multiple folding procedure. The cupboard adopts a set up framework, linked by rivet nuts and high-strength screws, which shortens the processing cycle, boosts the universality of components, inhabits much less room, and is convenient for arranging manufacturing.

◆ Handcarf

The handcart frame is assembled from thin steel plates refined by CNC equipment tools. The handcart and cabinet are shielded and coordinated, and the interlocking mechanism is risk-free, reputable, and versatile. According to their use, handcart can be separated right 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 exact same requirements can be freely exchanged 100%. The handcart has a disconnection placement, a testing setting, and a functioning setting inside the cabinet. Each placement is geared up with a placing gadget to make certain reliable interlocking. The operation has to be performed according to the interlocking defense procedures operation treatment. All handcart utilizes nuts and screws to move and exit, and its procedure is light and versatile, appropriate for working workers to run. When the handcart requirements to be moved away from the closet, a committed transfer automobile can be easily pulled out for various inspections and upkeep, And it takes on a mid placed layout, with a little quantity for evaluation, upkeep, and convenience.

◆ Compartment

The major electrical elements of the switchgear have independent areas, namely: circuit breaker handcart room, busbar space, cord area, relay instrument space. The defense level in between each area reaches lP2x; Except for the relay, all other three layouts have their own pressure relief channels. Because of making use of a main layout, the wire room area is considerably increased, enabling the tools to connect several wires.

◆ Breaker Area

Tracks are installed on both sides of the area for handcart 5 to move and slide from the detached position and examination setting to the working setting inside the cabinet. The partition 3 (valve) of the fixed call box 16 is mounted behind the rear wall surface of the. handcart compartment. When the handcart relocates from the disconnected placement test placement to the functioning setting, the flaps on the top and lower fixed get in touch with boxes are related to the handcart and immediately open. When relocating the opposite direction, the flaps immediately close until the handcart go back to a certain placement and totally covers the fixed contact box, creating reliable seclusion. Because of the separate procedure of the top and reduced shutoffs, during maintenance, the valve on the live 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 also be operated.

With the observation home window of the center door, the position of the handcart being thrown away 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 unit mated and connected per various other, repaired by the major busbar 20 and the static get in touch with box. The major busbar and attaching busbar are copper bars with rectangle-shaped cross-sections, used for high currents. When composite, dual busbars are made use of to assemble them. The branch busbar is connected to the fixed get in touch with box 16 and the primary busbar via screws and does not call for any other assistance. For special needs, the busbar can be covered with warm reduce tubes, insulation sleeves with connecting screws, and end caps. Nearby closet busbars are fixed with sleeve 19, to ensure that the air buffer kept between the connecting busbars can avoid melting in the event of interior mistake arcs. Sleeve 19 can effectively limit mishaps to this cupboard and not spread to other cupboards.

Overall dimensions of 12KV 3150A  Customized Hige Current Eletrical Switchgear

Installation of switchgear

Schematic diagram of switchgear structure

◆ The adhering to representation reveals the structural elements of the switchgear. All metal modular assembly framework, the cupboard body is constructed from imported light weight aluminum zinc coated plate with strong anti-corrosion ability, without surface area therapy. It is refined by CNC high-precision equipment and embraces innovative multiple folding process. The link is gotten in touch with rivet nuts and high-strength screws, with high accuracy, lightweight, and good strength.

◆ The switchgear can be furnished with our business's VS1 collection, VD4 collection, ZN65 series and various other vacuum circuit breakers, with wide applicability and strong interchangeability. The handcart is geared up with a working setting, a testing position, and positioning and display screen devices at each setting, guaranteeing security and integrity.

◆ The wire space can accommodate as much as 9 single core cable televisions, and the devices is furnished with dependable mechanical and electrical interlocking tools, totally fulfilling the "5 avoidance" requirements. Each area is furnished with stress alleviation networks to ensure individual security throughout operation.