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Electrical System Solutions

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Application scenarios of high and low voltage distribution cabinets

Our goal is to work closely with partners to help customers achieve greater success in multiple fields.

Industrial field

In production environments such as factories and workshops, it provides stable power supply for various production equipment to ensure the continuous operation of production lines.

Commercial building

In commercial places such as shopping malls, office buildings and hotels, systems like lighting, air conditioning, elevators and fire protection all rely on stable electricity.

Public facilities

Public facilities such as hospitals, schools and public transportation have extremely high requirements for the stability of power supply.

Energy industry

Collect, convert and output the electrical energy generated by renewable energy to ensure the quality and stable transmission of electrical energy.

TECHNICAL PARAMETERS

High-voltage distribution cabinet

Common models and standards: Common models include KYN28A, etc., and they comply with standards such as IEC298, GB3906, DL/T404, etc.

Main technical parameters
Protection grade: Enclosure IP4X, compartment IP2X.
Rated working voltage: Commonly 6-12kV, etc.
Rated frequency: 50Hz.
Altitude: Generally applicable to areas with an altitude of less than 1,000 meters.
Ambient temperature: The working ambient temperature range is -10 ℃ to + 40℃.
Relative humidity: No more than 85%.
Main busbar specification: The current carrying capacity of the main busbar is generally between 630 and 3150A.
Short-circuit withstand current: Rated short-time 16-40kA/4 seconds; Rated peak value: 40-100kA Rated short-circuit closing: 40-100kA; Rated short-circuit breaking capacity: 16-40kA.
Withstand voltage performance: Power frequency withstand voltage 32-42-48kV, lightning impulse withstand voltage 75-85kV. The power frequency withstand voltage of the secondary circuit is 2kV.

Low-voltage distribution cabinet

Common models and standards: such as GCK type, etc., designed and manufactured in accordance with relevant electrical standards.

Main technical parameters
Rated voltage: Generally 380V, suitable for industrial and civil low-voltage distribution systems.
Rated current: Ranging from 630A to 4000A, it can meet the current requirements of loads of different scales.
Rated short-circuit breaking current: 50kA, capable of quickly cutting off fault current in the event of a short-circuit fault.
Rated short-time withstand current: 50kA, ensuring the ability to withstand the thermal effect of short-circuit current for a short period of time.
Rated peak withstand current: 105kA, capable of withstanding the peak current impact at the moment of short circuit.
Protection grade: Commonly IP30, it can prevent objects with a diameter greater than 2.5mm from entering. The protection grade can be increased according to the usage environment.

SYSTEM INTEGRATION SOLUTION

Overall architecture design

Build a complete electrical system with high and low voltage distribution cabinets as the core, covering transformers, cables, control and protection devices, intelligent monitoring systems, etc.

Integration of control and protection systems

Control circuit design: Based on the actual control requirements, design a control circuit that includes a controller, sensors, and actuators to achieve the automation and intelligent control of the distribution cabinet.
Integrated protection functions: Integrates overload protection, short-circuit protection, leakage protection, lightning protection and other functions.

Intelligent monitoring system integration

Introduce an intelligent monitoring system to achieve real-time monitoring, remote control and data analysis of high and low voltage distribution cabinets and the entire electrical system.

Integration of grounding and lightning protection systems

Grounding system design: Establish a reliable grounding system to ensure that the metal enclosures of distribution cabinets, metal parts of electrical equipment, etc. are effectively grounded.
Lightning protection system design: Install lightning protection devices such as lightning rods, lightning belts, and lightning arresters.

Installation and commissioning

Installation stage: When installing high and low voltage distribution cabinets and complete sets of equipment, strictly follow the design drawings and installation specifications for operation.
Debugging process: After installation is completed, conduct comprehensive debugging work.