3.6KV 630A Medium Voltage 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 630A Medium Voltage Electrical Switchgear

The 3.6KV  630A Medium Voltage Electrical 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, also known as the handcart. The cabinet is segmented into four distinct compartments, providing IP4X protection level. Opening the doors of the compartments and the circuit breaker room lowers the protection level to IP2X. With features such as overhead incoming and outgoing lines, cable connections, and various functional options, this switchgear can be configured to create a comprehensive power distribution system. Its design allows for front installation, debugging, and maintenance, facilitating back-to-back, double arrangement, or wall-mounted setups, enhancing safety, flexibility, and space efficiency.

Main technical parameterr of 3.6KV 630A Medium Voltage Electrical Switchgear

Main technical parameters of vacuum switchgear

If the starting current of the 3-10KV motor controlled by the circuit breaker is below 600A, a metal zinc oxide lightning arrester is necessary. The user and our company will discuss the specific conditions, including ensuring that the rated current of the capacitor bank does not exceed 80% of the circuit breaker's rated current when disconnecting it.

Technical parameters of operating mechanism

The 3.6KV 630A Medium Voltage Electrical Switchgear is developed according to the armored metal confined switchgear in GB3906-91. The entire is made up of 2 mainparts: a cabinet and a central with drawable extra component (i.e. a handcart) (see Number 1). The closet is divided right into 4 separate areas, with a room security level of IP4X. When the doors of each area and circuit breaker space are opened, the protection degree is IP2X. Outfitted with overhanging inbound and outbound lines, wire incoming and outgoing lines, and various other functional systems, arranged and incorporated to develop 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 dual arrangement, and installed against the wall surface, boosting the security, versatility, and minimizing the impact of the switchgear.

◆ Covering and others

The major structure of the switchgear is constructed from aluminum zinc thin steel plate, processed by CNC equipment device, and embraces numerous folding process, which not only has the advantages of high accuracy, solid corrosion resistance and oxidation resistance, but also makes the closet lighter in weight, higher in mechanical stamina, and extra aesthetically pleasing in appearance contrasted to various other similar tools cabinets because of using numerous folding process. The cabinet embraces a set up structure, linked by rivet nuts and high-strength screws, which reduces the processing cycle, boosts the universality of parts, inhabits much less room, and is convenient for organizing production.

◆ Handcarf

The handcart frame is set up from slim steel plates refined by CNC maker tools. The handcart and cabinet are insulated and worked with, and the interlocking mechanism is risk-free, reliable, and adaptable. According to their usage, handcart can be separated right into circuit breaker handcart, voltage transformer handcart, metering handcart, seclusion handcart, and various other sorts of handcart. According to module and block kind variations, handcart of the exact same specification can be freely traded 100%. The handcart has an interference position, a testing setting, and a functioning position inside the cupboard. Each placement is equipped with a positioning device to guarantee dependable interlocking. The operation should be accomplished according to the interlocking protection actions operation procedure. All handcart utilizes nuts and screws to move and leave, and its operation is light and flexible, suitable for on duty workers to run. When the handcart demands to be moved away from the closet, a specialized transfer automobile can be conveniently taken out for different examinations and upkeep, And it embraces a mid placed style, with a tiny volume for assessment, upkeep, and convenience.

◆ Compartment

The major electrical elements of the switchgear have independent compartments, namely: circuit breaker handcart room, busbar area, cable television room, relay tool area. The protection level in between each area reaches lP2x; Besides the relay, all other 3 layouts have their very own stress alleviation networks. Because of the use of a central design, the cable television room space is significantly increased, permitting the equipment to attach multiple cords.

◆ Circuit breaker Compartment

Tracks are set up on both sides of the compartment for handcart 5 to move and slide from the disconnected position and examination position to the functioning placement inside the cupboard. The dividers 3 (shutoff) of the fixed get in touch with box 16 is mounted behind the back wall of the handcart compartment. When the handcart moves from the detached position examination placement to the working position, the flaps on the top and reduced static call boxes are related to the handcart and automatically open. When moving in the contrary direction, the flaps automatically close till the handcart go back to a certain position and totally covers the fixed get in touch with box, forming efficient isolation. Due to the separate procedure of the top and lower valves, during upkeep, the shutoff on the online side can be locked to make sure that maintenance personnel do not touch the live body. When the circuit breaker room door is closed, the handcart can likewise be run.

With the observation window of the middle door, the placement of the handcart being thrown away and closed in the area can be observed, and the energy storage standing can be displayed.

◆ Busbar Area

The major busbar 18 is a single system interlaced and linked per other, dealt with by the major busbar 20 and the fixed get in touch with box. The primary busbar and connecting busbar are copper bars with rectangular cross-sections, used for high currents. When composite, double busbars are utilized to construct them. The branch busbar is linked to the fixed contact box 16 and the primary busbar with bolts and does not need any other assistance. For unique demands, the busbar can be covered with warmth diminish tubes, insulation sleeves with attaching bolts, and end caps. Surrounding cabinet busbars are repaired with sleeve 19, to ensure that the air buffer retained between the attaching busbars can prevent melting in case of inner mistake arcs. Sleeve 19 can effectively restrict mishaps to this closet and not spread to various 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 covered plate with solid anti-corrosion capability, without surface area treatment. It is processed by CNC high-precision devices and takes on sophisticated multiple folding procedure. The connection is connected with rivet nuts and high-strength screws, with high precision, light weight, and good stamina.

◆ The switchgear can be outfitted with our business's VS1 series, VD4 series, ZN65 series and various other vacuum circuit breakers, with large applicability and solid interchangeability. The handcart is equipped with a working placement, a screening position, and positioning and display screen devices at each position, guaranteeing safety and reliability.

◆ The wire room can fit as much as 9 single core cables, and the equipment is geared up with trusted mechanical and electric interlocking tools, totally meeting the "5 avoidance" requirements. Each space is furnished with pressure relief channels to make certain individual security throughout operation.