Do You Know The Low-voltage Power Distribution Cabinet

The rated current of the low-voltage power distribution cabinet is AC 50Hz, and the power distribution system with a rated voltage of 380v is used for power conversion and control of power, lighting and power distribution. The product has the characteristics of strong breaking capacity, good dynamic and thermal stability, flexible electrical scheme, convenient combination, strong series, practicability, and novel structure.

Development status

1. Low-voltage switchgear and control equipment are commonly known as low-voltage switchgear, also known as low-voltage power distribution cabinet. It refers to a complete set of electrical devices with AC and DC voltages below 1000V.

2. my country's low-voltage power distribution cabinet market has maintained a rapid growth trend with the construction and implementation of smart grids, infrastructure, investment in manufacturing, and the development of the new energy industry.

3. Monitoring data shows that in 2010, the overall sales of China's low-voltage power distribution cabinet market was 10.633 billion yuan, an increase of 11.2% year-on-year; in 2011, the overall sales of my country's low-voltage power distribution cabinet market reached 11.96 billion yuan, an increase of 12.5% year-on-year.

4. Under the environment of great market demand for low-voltage power distribution cabinets in my country, competition within the industry is bound to intensify. Suppliers that provide a new generation of low-voltage complete sets of equipment and system solutions will take the lead in the future market competition, and the only products of enterprises will be Only with the above-mentioned characteristics can they win certain advantages in future competition and seize the commanding heights of the fourth-generation low-voltage electrical products.

GCS cabinet

1. The main structure adopts 8MF type open section steel, and the side of the section steel has mounting holes with a diameter of 9.2mm with a modulus of 20mm and 100mm respectively.

2. The functional rooms of the device are isolated from each other, and the compartments are divided into functional unit rooms, busbar rooms, and cable rooms. The functions of each room are independent of each other.

3. The horizontal main busbar adopts a horizontal arrangement behind the cabinet to enhance the ability of the busbar against electric power

The design of the cable compartment makes it very convenient for cables to enter and exit up and down

Functional unit: the module of the drawer layer height is 160mm, the unit loop rated current is 400A and below, GCK cabinet: (MCC)

Main architecture

The basic structure of the cabinet is a combined assembly structure. The functional rooms are connected by bolts, and 20mm is the modular installation hole. The functional rooms are isolated from each other. The basic feature of the GCK cabinet is that the busbar is on the upper part of the cabinet. The compartment is divided into functional unit room (front of the cabinet) and busbar room (top of the cabinet). , Cable room (behind the cabinet). It can also be installed on the wall reliably. At this time, the right side of the cabinet is widened by 200mm as a cable room, which is similar to the top bus bar of the MNS cabinet.

Functional unit: the module of drawer layer height is 200mm, MNS cabinet: (MCC)

Main architecture

1. The basic structure of the cabinet is composed of C-shaped profile assembly. The C-shaped profile is made of steel plate with E=25mm as the module mounting hole.

2. Withdrawable MCC cabinet is divided into three compartments, the compartments are divided into functional unit room (front left of the cabinet), bus room (rear of the cabinet), cable room (front right of the cabinet). Since the horizontal busbar compartment is at the back, it can be made into a double-sided cabinet.

3. The rear outlet is designed to reduce the width of the switch cabinet. The main bus of the switch cabinet is installed horizontally on the top of the switch cabinet, and the rear half of the cabinet is the cable room. At this time, the busbar style of the GCK cabinet is similar.

Electrical performance: basic electrical parameters

Rated insulation voltage: AC 660v (1000) vB) Rated working voltage: main circuit: AC 380v (660V) auxiliary circuit: AC 380v (220v) DC 220v (110v)

Rated frequency: 50Hz

Rated current: ≤4000A

Rated peak withstand current (0.1s) 105KA

Rated short-time withstand current (1s) 50KA

GCK series AC low-voltage power distribution cabinet is listed as a new energy-saving product by the country. The control center has advanced structure, beautiful appearance, high electrical performance, high protection level, safety, reliability, and easy maintenance. It is used in metallurgy, petroleum, chemical, electrical machinery, light Ideal power distribution device for low-voltage power supply systems in textile and other industries.

Main technical performance

Rated working voltage: 380V, 660V

Frequency of use: 50Hz

Rated current: horizontal bus system 1600-3150A, vertical bus system 400-800A

Rated short-time withstand current: horizontal bus 80K effective value/1 second, vertical bus 50KA effective value/1 second

Rated peak current: horizontal bus 175KA vertical bus 110KA

Breaking capacity of functional unit: 50KA

Peripheral protection level: IP40

PGL cabinet: PGL type AC low-voltage power distribution cabinet is suitable for power users such as power plants, substations, industrial and mining enterprises as power, lighting and power distribution equipment in power distribution systems with AC 50Hz, rated working voltage 380V, and rated current up to 2500A For the conversion, distribution and control of electrical energy. The product has high breaking capacity and rated short-time withstand current up to 50kA.

This product complies with IEC439 "Low-Voltage Switchgear and Control Equipment", GB7251 "Low-Voltage Switchgear" and other standards.

The PGL power distribution cabinet is a low-voltage power distribution device for indoor installation and open-type double-sided maintenance. The basic structure of the power distribution cabinet is composed of steel plate and angle steel welding. There is a door in the front of the cabinet, and an instrument panel above the cabinet, which is a small openable door and can be equipped with indicating instruments. For cabinets assembled side by side, partitions are added between the cabinets, which reduces the possibility of expanding accidents due to failures in a single cabinet. Above the rear frame of the cabinet, there is a main busbar installation sub-insulation frame, and a busbar protective cover is provided to prevent the vicious accident of the main busbar short-circuit caused by metal objects falling from above. The neutral bus is installed on the insulator under the cabinet, the main grounding point of the protective grounding system is welded under the frame, and the meter door also has a grounding point to interconnect with the shell.

The PGL type AC low-voltage power distribution panel is divided into: low-voltage metering cabinet, low-voltage incoming cabinet, capacitor compensation cabinet, municipal power generation conversion cabinet, bus connection cabinet, and low-voltage outlet cabinet.

Main technical parameters: Rated voltage: AC380V

Rated breaking capacity: PGL1: 15KV; PGL2: 30KV (all valid values)

Rated voltage of auxiliary circuit: AC220V, 380V; DC110V, 220V

Rated current: 2000A, 2500A