3.6KV 3150A Medium Voltage High Current 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 3.6KV 3150A Medium Voltage High Current Electrical Switchgear

The 3.6KV 3150A Medium Voltage High Current Electrical Switchgear is structured based on the armored metal-enclosed switchgear outlined in GB3906-91. It consists of two main components: the cabinet and the central pull-out part, also known as the handcart. The cabinet is divided into four separate sections, offering an enclosure protection level of IP4X. Opening the doors of each compartment and the circuit breaker room lowers the protection level to IP2X. The switchgear includes solutions for overhead incoming and outgoing lines, cable connections, and other functionalities. Once configured and assembled, it creates a comprehensive power distribution system. This switchgear is designed for front installation, allowing for back-to-back, double arrangement, or wall mounting setups, enhancing safety, flexibility, and space efficiency.

Main technical parameters of 3.6KV 3150A Medium Voltage High Current Electrical Switchgear

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 beneath 600A. This requirement is negotiable between the user and our company, with the understanding that the rated current of the capacitor bank must not surpass 80% of the rated current of the circuit breaker when the circuit breaker is employed to disconnect the capacitor bank.

Technical parameters of operating mechanism

The 3.6KV 3150A Medium Voltage High Current Electrical Switchgear is developed according to the armored metal enclosed switchgear in GB3906-91. The entire is composed of two mainparts: a cupboard and a main with drawable spare part (i.e. a handcart) (see Number 1). The cabinet is divided right into four different areas, with an unit security degree of IP4X. When the doors of each area and breaker space are opened, the security degree is IP2X. Outfitted with overhead inbound and outbound lines, wire inbound and outgoing lines, and other practical schemes, prepared and integrated to create a total collection of power circulation system devices. This switchgear can be set up, debugged, and preserved from the front, so it can be back-to-back, prepared in a dual plan, and mounted against the wall surface, enhancing the safety, adaptability, and minimizing the impact of the switchgear.

◆ Covering and others

The primary frame of the switchgear is made from aluminum zinc slim steel plate, refined by CNC maker device, and adopts several folding process, which not just has the advantages of high accuracy, strong rust resistance and oxidation resistance, yet also makes the cupboard lighter in weight, higher in mechanical strength, and more aesthetically pleasing in appearance contrasted to various other comparable devices cabinets because of making use of multiple folding process. The cabinet takes on a constructed structure, attached by rivet nuts and high-strength bolts, which shortens the processing cycle, enhances the universality of components, occupies much less area, and is convenient for arranging manufacturing.

◆ Handcarf

The handcart framework is put together from slim steel plates refined by CNC maker devices. The handcart and cupboard are shielded and collaborated, and the interlocking device is secure, reliable, and adaptable. According to their use, handcart can be separated right into circuit breaker handcart, voltage transformer handcart, metering handcart, seclusion handcart, and other types of handcart. According to component and block type variants, handcart of the very same requirements can be easily exchanged 100%. The handcart has an interference placement, a screening placement, and a working setting inside the cupboard. Each setting is equipped with a placing gadget to make certain trustworthy. interlocking. The procedure has to be performed according to the interlocking defense actions operation procedure. All handcart makes use of nuts and screws to move and exit, and its procedure is light and adaptable, appropriate for at work personnel to run. When the handcart requirements to be moved away from the cabinet, a dedicated transfer vehicle can be quickly pulled out for different assessments and upkeep, And it takes on a mid mounted layout, with a tiny quantity for assessment, maintenance, and ease.

◆ Compartment

The main electrical parts of the switchgear have independent areas, namely: breaker handcart area, busbar space, cable area, relay tool area. The protection level in between each area gets to lP2x; Besides the relay, all various other 3. layouts have their very own pressure relief networks. As a result of the use of a central layout, the wire area is considerably boosted, allowing the equipment to link numerous cable televisions.

◆ Circuit breaker Area

Tracks are installed on both sides of the area for handcart 5 to relocate and slide from the detached placement and examination position to the working setting inside the closet. The dividing 3 (valve) of the static contact box 16 is mounted behind the back wall of the handcart area. When the handcart moves from the disconnected setting examination setting to the functioning setting, the flaps on the top and lower fixed contact boxes are linked with the handcart and automatically open. When relocating the opposite direction, the flaps instantly close until the handcart go back to a specific placement and totally covers the fixed contact box, creating effective isolation. Due to the different procedure of the top and lower valves, throughout upkeep, the shutoff on the real-time side can be secured to guarantee that maintenance workers do not touch the online body. When the circuit breaker area door is shut, the handcart can also be run.

With the observation home window of the middle door, the placement of the handcart being gotten rid of and enclosed the area can be observed, and the power storage condition can be presented.

◆ Busbar Compartment

The primary busbar 18 is a solitary unit mated and connected per other, repaired by the major busbar 20 and the fixed get in touch with box. The major busbar and. linking busbar are copper bars with rectangle-shaped cross-sections, made use of for high currents. When composite, double busbars are used to construct them. The branch busbar is linked to the fixed get in touch with box 16 and the primary busbar via screws and does not require any other support. For special requirements, the busbar can be covered with warm reduce tubing, insulation sleeves with attaching bolts, and finish caps. Surrounding closet busbars are taken care of with sleeve 19, so that the air buffer kept between the attaching busbars can avoid melting in case of interior fault arcs. Sleeve 19 can efficiently limit mishaps to this closet and not infect various other cabinets.

Overall dimensions

Installation of switchgear

Schematic diagram of switchgear structure

◆ The adhering to representation reveals the structural elements of the switchgear. All metal modular assembly structure, the closet body is made of imported light weight aluminum zinc layered plate with solid anti-corrosion capacity, without surface area therapy. It is processed by CNC high-precision tools and adopts sophisticated multiple folding procedure. The connection is gotten in touch with rivet nuts and high-strength bolts, with high accuracy, lightweight, and excellent toughness.

◆ The switchgear can be equipped with our business's VS1 series, VD4 series, ZN65 collection and other vacuum circuit breakers, with wide applicability and solid interchangeability. The handcart is furnished with a functioning position, a screening setting, and positioning and display screen devices at each setting, ensuring safety and dependability.

◆ The cable television area can accommodate as much as 9 solitary core wires, and the equipment is outfitted with trustworthy mechanical and electric interlocking devices, completely fulfilling the "5 avoidance" needs. Each room is outfitted with pressure relief networks to make sure individual safety and security during operation.