Low Voltage Withdrawable Switchgear Panel

The Low Voltage Withdrawable Switchgear Panel is particularly suitable for projects where several types of electrical loads need to be managed from one centralized low-voltage distribution system. Instead of using a single fixed arrangement, the cabinet can be configured with power distribution units, motor control units, and power factor compensation functions according to the customer's electrical diagram.

System Configuration

A large low-voltage electrical system normally contains different types of loads. Production equipment, motors, lighting, auxiliary equipment, and reactive loads may require different protection and control arrangements.

Usune's modular switchgear can therefore be configured according to the function of each circuit. A typical system can include a Power Distribution Center (PC) for incoming and outgoing power, a Motor Control Center (MCC) for motor feeders, and a compensation cabinet for reactive power management.

This configuration allows electrical engineers to develop the switchboard around the actual load structure of a project.

Power Distribution

The PC cabinet is designed for the receiving and distribution side of a low-voltage system.

Depending on the required electrical parameters, the cabinet can accommodate Emax, MT, 3WN, AH, ME series circuit breakers and other compatible components according to the approved design.

The distribution section can be used to supply downstream production lines, transformers, auxiliary equipment, building systems, and other electrical loads.

For projects with multiple feeders, each circuit can be arranged according to its rated current and protection requirements, making the overall distribution network easier to organize.

Motor Control

Motor loads are often one of the largest components of industrial electrical systems. Pumps, fans, compressors, conveyors, machine tools, and production equipment may all require dedicated motor circuits.

The MCC configuration uses large and small drawers to accommodate different motor feeder requirements. The main switching device for each circuit can use a high-breaking-capacity molded case circuit breaker or a rotary load switch with fuse.

This arrangement allows motor circuits to be grouped separately from general power distribution circuits while maintaining centralized control of the electrical system.

Power Factor Control

Industrial facilities with a large number of motors and inductive loads may require reactive power compensation.

Usune can configure the compensation section with manual, automatic, or remote power factor compensation functions. The appropriate control method can be selected according to the customer's electrical management system.

By separating compensation equipment from general distribution and motor circuits, the cabinet arrangement can better correspond to the customer's overall power management strategy.

Modular Arrangement

The main value of a withdrawable low-voltage system is not simply the cabinet structure itself, but the ability to organize different electrical functions within one coordinated system.

PC Configuration

The PC section handles incoming power and distributes electricity to downstream feeders. Its breaker configuration is selected according to the system's current and protection requirements.

MCC Configuration

The MCC section is dedicated to motor-related circuits. Different drawer sizes can be arranged according to motor ratings and feeder quantities.

Compensation Configuration

The compensation section manages reactive power and can be configured for manual, automatic, or remote operation.

These three functional areas can be designed separately or integrated into the same low-voltage switchboard according to the project requirements.

Load-Based Selection

The selection of a low-voltage switchgear system should begin with the electrical loads rather than the cabinet appearance.

For a power distribution project, engineers normally need to confirm the incoming voltage, rated current, number of outgoing feeders, short-circuit level, motor capacity, and future expansion requirements.

For motor-intensive facilities, the number and rating of motors become important factors in determining the MCC configuration.

Where reactive loads are significant, the required compensation capacity and control method should also be considered.

This load-based approach helps ensure that the final switchgear configuration corresponds to the actual operating characteristics of the facility.

Applications

The Low Voltage Withdrawable Switchgear Panel can be configured for different industries and electrical environments according to the required distribution functions.

Industrial Manufacturing

Factories can use PC and MCC configurations to distribute power to production equipment, motors, auxiliary systems, and process machinery.

Petrochemical Facilities

Petrochemical plants typically have numerous motor-driven systems such as pumps, fans, and compressors. Separate motor control circuits can be arranged within the MCC section.

Metallurgical Plants

Steel and metallurgical facilities often contain high-power motors and multiple production lines. Modular distribution allows different loads to be managed through dedicated feeder circuits.

Transportation Facilities

Transportation infrastructure can use centralized low-voltage distribution for equipment power supplies, auxiliary systems, ventilation equipment, and other electrical loads.

Commercial Buildings

High-rise buildings and residential developments can use low-voltage distribution cabinets for centralized feeder management and electrical equipment supply.

Energy Projects

Power-related facilities can combine incoming distribution, outgoing feeders, motor circuits, and reactive power compensation within an integrated low-voltage system.

Operating Conditions

The standard equipment is designed for an ambient temperature between -5°C and +40°C, with an average temperature not exceeding +35°C over 24 hours.

The standard installation altitude is ≤2000m. The surrounding air should be relatively clean, and appropriate measures should be considered where humidity and temperature fluctuations may cause condensation.

For transportation and storage, the applicable temperature range is -25°C to +55°C, with short-term exposure up to +70°C for no more than 24 hours.

If the equipment is required for offshore oil platforms, nuclear power plants, or other special environments, the operating conditions should be separately confirmed between Usune and the customer.

Technical Specifications

The final electrical parameters should be confirmed according to the customer's single-line diagram, load list, protection requirements, and installation conditions.

Engineering Considerations

For procurement teams, selecting a low-voltage switchgear cabinet only according to rated voltage and current may not be sufficient.

The number of outgoing circuits, motor feeder quantity, individual motor ratings, short-circuit requirements, incoming power capacity, and compensation requirements can all affect the final cabinet configuration.

Usune can review the customer's electrical requirements and recommend the appropriate combination of PC, MCC, and compensation functions.

This approach is particularly useful for industrial projects where the switchboard needs to accommodate multiple types of electrical loads rather than serving only as a conventional distribution cabinet.

Project Reference

Cas-space Rocket Launch Project

The Cas-space Rocket Launch Project is one of the project references associated with Usune's electrical equipment.

Rocket launch facilities contain complex supporting electrical systems and require organized power distribution for equipment, auxiliary facilities, control-related systems, and infrastructure loads.

In such an environment, the electrical distribution system needs to accommodate different load characteristics while maintaining clear circuit organization. Usune's low-voltage switchgear was applied as part of the project's electrical equipment arrangement.

The project demonstrates the application of Usune electrical equipment in specialized infrastructure where power distribution requirements extend beyond conventional commercial or industrial buildings.

Product Selection

Before ordering a Low Voltage Withdrawable Switchgear Panel, customers should normally provide the following project information:

Providing these details at the quotation stage allows Usune to develop a more accurate switchgear configuration and reduce unnecessary changes during production.

Product External Dimension

A power distribution center(PC) cabinet

B Motor control center(MCC) cabinet

Quality Management

Usune operates its manufacturing and quality management processes according to ISO 9001, ISO 14001, and ISO 45001.

The products are developed and manufactured with reference to applicable IEC and GB standards. CE certification is available for applicable product configurations and target markets.

Factory inspection covers component installation, cabinet assembly, electrical connections, functional mechanisms, and routine testing before shipment.

Relevant technical documents and test reports can be provided according to project requirements.

FAQ

What is the rated voltage of the system?

The equipment is designed for AC systems with a rated working voltage of 660V and below.

What functions can be integrated?

The system can integrate power distribution, motor control, and automatic power factor compensation functions.

What is a PC cabinet?

A PC cabinet is primarily used for power receiving and distribution. It can be configured with suitable circuit breakers according to the system requirements.

What is an MCC cabinet?

An MCC cabinet is designed for centralized control and protection of multiple motor circuits. It can use large and small drawer configurations.

Can the equipment be customized?

Yes. Usune can configure the cabinet according to the customer's single-line diagram, load list, motor ratings, feeder quantity, and compensation requirements.

What standards does Usune follow?

Usune operates under ISO 9001, ISO 14001, and ISO 45001 management systems. Products are designed according to applicable IEC and GB standards, with CE certification available for applicable configurations.

Can special operating environments be supported?

Special environments such as offshore platforms and nuclear power facilities require separate technical evaluation and agreement before production.

What information is required for quotation?

Customers are recommended to provide system voltage, incoming current, feeder quantity, motor information, short-circuit level, compensation requirements, single-line diagram, and installation environment.

Does Usune provide test reports?

Yes. Factory inspection and routine testing are carried out before shipment, and relevant test reports can be provided according to project requirements.

Usune Supply Capability

Usune focuses on low-voltage electrical equipment and provides project-oriented switchgear configurations for industrial, commercial, energy, transportation, and specialized infrastructure applications.

For customers purchasing the Low Voltage Withdrawable Switchgear Panel, Usune can support the process from electrical parameter confirmation and cabinet configuration to manufacturing inspection and shipment documentation, providing a practical solution based on the actual electrical system rather than using the same configuration for every project.