7.2KV 1600A High Current Power Distribution Cabinet 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 of7.2KV 1600A High Current Power Distribution Cabinet Switchgear

The 7.2KV 1600A  High Current Power Distribution Cabinet Switchgear is crafted in accordance with the armored metal-enclosed switchgear standards outlined in GB3906-91. It consists of two main parts: the cabinet and the central pull-out portion (also known as the handcart). The cabinet is divided into four separate compartments, offering an enclosure protection level of IP4X. When the doors of each small compartment and the circuit breaker room are opened, the level drops to IP2X. The switchgear is designed with overhead incoming and outgoing lines, cable incoming and outgoing lines, and various functional solutions. After arrangement and combination, it forms a comprehensive power distribution system device. Its front-facing design allows for easy installation, debugging, and maintenance, which makes it versatile and safe. It can be installed back-to-back, in a double arrangement, or against the wall, maximizing space efficiency.

Main technical parameters of 7.2KV 1600A High Current Power Distribution Cabinet Switchgear

Main technical parameters of vacuum switchgear

If the starting current of the 3-10KV motor controlled by the circuit breaker is below 600A, it is necessary to include a metal zinc oxide lightning arrester. The exact conditions are discussed between the customer and our company. In cases where the circuit breaker is employed to disconnect the capacitor bank, the rated current of the capacitor should not surpass 80% of the rated current of the circuit breaker.

Technical parameters of operating mechanism

The 7.2KV 1600A High Current Power Distribution Cabinet Switchgear is created according to the armored metal enclosed switchgear in GB3906-91. The whole is made up of two mainparts: a cupboard and a central with drawable spare part (i.e. a handcart) (see Number 1). The cabinet is separated into four different areas, with an unit security level of IP4X. When the doors of each area and circuit breaker space are opened, the security level is IP2X. Equipped with above incoming and outward bound lines, cord inbound and outgoing lines, and other functional systems, organized and combined to develop a total collection of power distribution system devices. This switchgear can be mounted, debugged, and kept from the front, so it can be back-to-back, organized in a dual setup, and mounted against the wall, boosting the safety, flexibility, and lowering the footprint of the switchgear.

◆ Shell and others

The main frame of the switchgear is constructed from light weight aluminum zinc slim steel plate, refined by CNC device device, and adopts multiple folding procedure, which not only has the advantages of high accuracy, strong corrosion resistance and oxidation resistance, however likewise makes the cupboard lighter in weight, greater in mechanical toughness, and extra visually pleasing in appearance compared to various other similar tools cupboards due to using multiple folding procedure. The cupboard takes on an assembled framework, connected by rivet nuts and high-strength bolts, which shortens the handling cycle, boosts the universality of elements, occupies much less area, and is convenient for organizing manufacturing.

◆ Handcarf

The handcart structure is constructed from slim steel plates processed by CNC machine devices. The handcart and closet are insulated and worked with, and the interlocking mechanism is risk-free, reliable, and adaptable. According to their usage, handcart can be separated into circuit breaker handcart, voltage transformer handcart, metering handcart, seclusion handcart, and other types of handcart. According to module and block kind variations, handcart of the exact same spec can be easily traded 100%. The handcart has a disconnection position, a testing setting, and a functioning setting inside the cabinet. Each position is geared up with a placing tool to make sure reputable interlocking. The operation needs to be accomplished according to the interlacing defense steps operation treatment. All handcart utilizes nuts and screws to move and leave, and its operation is light and versatile, suitable for working workers to operate. When the handcart requirements to be relocated away from the closet, a dedicated transfer lorry can be easily pulled out for various assessments and maintenance, And it adopts a mid placed design, with a little volume for assessment, maintenance, and benefit.

◆ Area

The main electrical elements of the switchgear have independent areas, namely: breaker handcart area, busbar area, wire space, relay tool space. The protection degree between each compartment gets to lP2x; Except for the relay, all other 3. styles have their own pressure alleviation networks. Because of the use of a central design, the wire area space is greatly raised, permitting the equipment to link several cables.

◆ Circuit breaker Compartment

Tracks are installed on both sides of the compartment for handcart 5 to move and slide from the disconnected setting and test placement to the working setting inside the closet. The partition 3 (shutoff) of the static call box 16 is mounted behind the rear wall surface of the handcart area. When the handcart moves from the disconnected setting test position to the working position, the flaps on the top and lower fixed get in touch with boxes are linked with the handcart and instantly open. When relocating the opposite instructions, the flaps instantly close until the handcart go back to a certain position and completely covers the static get in touch with box, creating effective isolation. Because of the separate procedure of the upper and reduced valves, throughout maintenance, the shutoff on the live side can be locked to ensure that upkeep personnel do not touch the real-time body. When the circuit breaker room door is shut, the handcart can likewise be run.

Via the observation home window of the middle door, the position of the handcart being disposed of and enclosed the compartment can be observed, and the power storage space status can be presented.

◆ Busbar Area

The primary busbar 18 is a single system spliced and linked to each other, dealt with by the main busbar 20 and the static get in touch with box. The main busbar and linking busbar are copper bars with rectangular cross-sections, utilized for high currents. When composite, double busbars are made use of to assemble them. The branch busbar is connected to the static contact box 16 and the main busbar with screws and does not call for any other support. For unique requirements, the busbar can be covered with warmth reduce tubing, insulation sleeves with attaching screws, and finish caps. Nearby cupboard busbars are fixed with sleeve 19, to ensure that the air buffer maintained in between the linking busbars can stop melting in the event of interior mistake arcs. Sleeve 19 can properly restrict accidents to this closet and not spread to other cupboards.

Overall dimensions

Installation of switchgear

Schematic diagram of switchgear structure

◆ The adhering to diagram shows the structural components of the switchgear. All steel modular assembly structure, the closet body is made from imported aluminum zinc coated plate with strong anti-corrosion capability, without surface treatment. It is refined by CNC high-precision equipment and adopts sophisticated multiple folding process. The link is gotten in touch with rivet nuts and high-strength screws, with high precision, lightweight, and excellent toughness.

◆ The switchgear can be outfitted with our company's VS1 series, VD4 collection, ZN65 collection and other vacuum circuit breakers, with wide applicability and solid interchangeability. The handcart is outfitted with a functioning placement, a testing setting, and positioning and screen tools at each setting, making sure security and integrity.

◆ The wire room can accommodate as much as 9 single core cables, and the tools is outfitted with reliable mechanical and electric interlocking devices, fully fulfilling the "five avoidance" requirements. Each area is equipped with pressure alleviation channels to make sure individual security throughout procedure.