7.2KV 630A 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 7.2KV 630A Customized Electrical Switchgear

The 7.2KV 630A Customized Electrical Switchgear is based on the design 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 divided into four compartments, providing IP4X protection level. Opening the doors of the compartments and circuit breaker room reveals an IP2X protection level. This switchgear features various functional solutions for overhead incoming and outgoing lines, cable connections, and more, allowing for the creation of a complete power distribution system. Its front-access design enables easy installation, debugging, and maintenance, allowing for flexible configurations such as back-to-back, double arrangement, or against the wall, enhancing safety, flexibility, and space efficiency.

Main technical parameters of 7.2KV 630A Customized Electrical Switchgear

Main technical parameters of vacuum switchgear

If the 3-10KV motor is controlled by the starting current is below 600A, a metal zinc oxide lightning arrester should be installed. The user and our company will discuss the specific conditions. When using the circuit breaker to disconnect the capacitor bank, the rated current of the capacitor should not surpass 80% of the circuit breaker's rated current.

Technical parameters of operating mechanism

The 7.2KV 630A Customized Electrical Switchgear is made according to the armored steel confined switchgear in GB3906-91. The entire is made up of 2 mainparts: a cabinet and a main with drawable extra component (i.e. a handcart) (see Number 1). The cabinet is split into 4 different areas, with an unit defense level of IP4X. When the doors of each compartment and breaker room are opened, the security degree is IP2X. Geared up with overhead inbound and outbound lines, cord incoming and outward bound lines, and other practical plans, set up and combined to form a complete set of power distribution system devices. This switchgear can be mounted, debugged, and kept from the front, so it can be back-to-back, arranged in a double plan, and mounted versus the wall surface, boosting the security, adaptability, and minimizing the impact of the switchgear.

◆ Shell and others

The major framework of the switchgear is made of aluminum zinc thin steel plate, processed by CNC machine tool, and adopts multiple folding procedure, which not only has the advantages of high precision, strong corrosion resistance and oxidation resistance, yet also makes the cabinet lighter in weight, greater in mechanical strength, and much more aesthetically pleasing in appearance compared to other comparable equipment closets due to using numerous folding procedure. The closet embraces an assembled structure, attached by rivet nuts and high-strength bolts, which shortens the processing cycle, enhances the universality of components, inhabits less room, and is convenient for arranging manufacturing.

◆ Handcarf

The handcart framework is put together from thin steel plates processed by CNC equipment tools. The handcart and closet are insulated and worked with, and the interlocking system is safe, reliable, and flexible. According to their use, handcart can be split into circuit breaker handcart, voltage transformer handcart, metering handcart, seclusion handcart, and various other sorts of handcart. According to module and block type variations, handcart of the exact same spec can be freely exchanged 100%. The handcart has a disconnection position, a screening setting, and a functioning position inside the cupboard. Each setting is equipped with a positioning device to make sure trustworthy. interlocking. The operation has to be executed according to the interlocking security measures operation treatment. All handcart makes use of nuts and screws to relocate and leave, and its procedure is light and versatile, appropriate for working personnel to run. When the handcart needs to be moved away from the closet, a dedicated transfer car can be quickly pulled out for various inspections and upkeep, And it takes on a mid installed style, with a small volume for assessment, upkeep, and benefit.

◆ Area

The primary electrical elements of the switchgear have independent compartments, namely: circuit breaker handcart room, busbar space, cord room, relay instrument area. The protection level between each area reaches lP2x; Besides the relay, all various other three styles have their own stress alleviation networks. Due to making use of a central format, the wire area is substantially increased, allowing the equipment to link numerous wires.

◆ Circuit breaker Area

Tracks are mounted on both sides of the compartment for handcart 5 to relocate and glide from the separated position and examination position to the working placement inside the closet. The dividing 3 (shutoff) of the fixed get in touch with box 16 is set up behind the rear wall of the handcart compartment. When the handcart relocates from the disconnected placement examination position to the working position, the flaps on the top and lower static contact boxes are related to the handcart and immediately open. When relocating the opposite direction, the flaps automatically close till the handcart returns to a specific position and completely covers the fixed call box, creating efficient isolation. Because of the separate procedure of the top and reduced valves, throughout maintenance, the valve on the online side can be secured to make sure that maintenance employees do not touch the live body. When the circuit breaker area door is closed, the handcart can additionally be operated.

With the observation window of the middle door, the setting of the handcart being dealt with and closed in the area can be observed, and the energy storage standing can be displayed.

◆ Busbar Area

The primary busbar 18 is a single device interlaced and connected per various other, taken care of by the main busbar 20 and the static get in touch with box. The major busbar and connecting busbar are copper bars with rectangular cross-sections, utilized for high currents. When composite, dual busbars are utilized to assemble them. The branch busbar is linked to the fixed contact box 16 and the main busbar through bolts and does not call for any other assistance. For special requirements, the busbar can be covered with warmth shrink tubing, insulation sleeves with connecting screws, and end caps. Nearby cabinet busbars are taken care of with sleeve 19, to make sure that the air buffer maintained in between the linking busbars can protect against melting in case of internal mistake arcs. Sleeve 19 can properly limit crashes to this cupboard and not spread to other cabinets.

Overall dimensions

Installation of switchgear

Schematic diagram of switchgear structure

◆ The following representation shows the architectural parts of the switchgear. All metal modular assembly structure, the closet body is made of imported aluminum zinc covered plate with strong anti-corrosion capacity, without surface area therapy. It is processed by CNC high-precision devices and takes on innovative numerous folding procedure. The link is connected with rivet nuts and high-strength screws, with high accuracy, light weight, and great stamina.

◆ The switchgear can be furnished with our firm's VS1 collection, VD4 series, ZN65 series and other vacuum circuit breakers, with large applicability and strong interchangeability. The handcart is geared up with a working placement, a testing placement, and placing and display screen tools at each setting, guaranteeing security and integrity.

◆ The cable area can accommodate approximately 9 solitary core cables, and the devices is geared up with reliable mechanical and electrical interlocking gadgets, fully meeting the "five prevention" demands. Each area is geared up with stress relief channels to make sure personal security during procedure.