Kyn28 Switchgear 6kv

The Usune Kyn28 Switchgear 6kV is an indoor AC armored withdrawable metal-enclosed switchgear, suitable for 3.6kV~12kV voltage levels, 50/60Hz three-phase AC power systems, and is a core control and protection device in the power transmission and distribution process. Developed and manufactured independently by Zhejiang Usune Electric, this product integrates advanced design concepts and mature manufacturing processes, balancing safety, reliability, and practicality. It meets the power distribution needs of single busbar and single busbar segmented systems, achieving large-scale application in power, metallurgy, chemical, and construction industries, contributing to the safe and efficient operation of global power systems with stable performance.

Low voltage switchgear

Medium voltage switchgear

Core Technical Parameters

Structural Design and Core Features

1. Removable Modular Design

The Kyn28 Switchgear 6kV core component, the vacuum circuit breaker (compatible with VS1, VD4, etc.), is installed on a mobile trolley. For routine maintenance, testing, or replacement, only the circuit breaker trolley needs to be removed for operation, without needing to de-energize the entire cabinet, significantly shortening maintenance time and reducing the impact of power outages. The trolley is universal and can be quickly replaced, improving system operation and maintenance efficiency.

2. Metal-clad Compartmentalized Structure

The Kyn28 Switchgear 6kV cabinet is divided into four independent compartments by metal partitions: a busbar compartment, a circuit breaker compartment, a cable compartment, and a low-voltage instrument compartment. Each compartment's live components are completely isolated, effectively preventing the spread of phase-to-phase and phase-to-ground short-circuit faults, avoiding cascading failures, reducing the risk of electric shock during maintenance, and enhancing equipment operational safety.

3. Comprehensive Five-Prevention Interlocking Protection

Equipped with a mechanical + electrical dual five-prevention interlocking system, eliminating misoperation at its source:

- Prevents accidental opening or closing of circuit breakers;

- Prevents pushing/removing the circuit breaker trolley under load;

- Prevents closing the grounding switch while it is energized;

- Prevents accidental energization when the grounding switch is closed;

- Prevents accidental entry into a energized compartment.

4. Compact, Efficient, and Easily Expandable

The cabinet has a compact structure, saving installation space. Its modular design allows for flexible combination and expansion of cabinet types to meet the expansion needs of the power distribution system. It easily adapts to different system architectures, such as single busbar and single busbar segmented systems, facilitating future system upgrades and integration.

Applicable Environmental Conditions

1. Ambient Temperature: -10℃ ~ +40℃

2. Altitude: ≤1000m (Customized designs for high-altitude areas above 1000m are available)

3. Air Humidity: Daily average relative humidity ≤95%, monthly average relative humidity ≤90% (non-condensing)

4. Surrounding Environment: No corrosive or explosive gases, no large amounts of dust, and no flammable or explosive media

Typical Application Scenarios

1. Power Plant Auxiliary Systems: Used for receiving, distributing, and protecting plant power, ensuring stable power supply to generator auxiliary equipment;

2. Industrial and Mining Enterprise Power Distribution: Suitable for high-load industrial scenarios such as mining, metallurgy, and chemical industries, meeting the power supply control and overload/short-circuit protection needs of high-power equipment;

3. Commercial and High-Rise Buildings: Used in substations of large shopping malls, office buildings, hotels, etc., to achieve safe distribution and refined management of building power;

4. Public Substations: As the core medium-voltage power distribution equipment in urban and industrial substations, ensuring the stable operation of the regional power grid.

Real-world Application Case

Case Study: Power Distribution Project for a Rolling Mill Production Line of a Large Steel Group in Jiangsu Province

Project Background: The existing switchgear in the steel group's rolling mill workshop was aging and frequently malfunctioning, affecting the continuous operation of the production line. High-reliability medium-voltage switchgear was required for replacement.

Solution: 28 Usune KYN28-6KV switchgear units were selected, compatible with a 10kV power distribution system, with a rated current of 1600A and a short-time withstand current of 31.5kA (4s), configured with VS1 vacuum circuit breakers.

Implementation Results: In the three years since commissioning, the equipment has operated without any failures. The five-layer interlocking system effectively prevents misoperation, and the compartmentalized structure avoids the spread of faults. The power supply stability of the rolling mill production line has improved by 99.9%, reducing annual downtime losses by over 5 million yuan, earning high praise from the customer.

Outer Dimension

Project Reference

Cas-space Rocket Launch Project

Test Report

FAQs

Q1: What are the core advantages of the Kyn28 Switchgear 6kV compared to traditional fixed switchgear?

A: Compared to traditional fixed switchgear, the biggest advantage of the Usune KYN28-6KV is its removable design. The circuit breaker trolley can be moved independently, eliminating the need to power off the entire cabinet during maintenance, significantly reducing the impact of power outages. Simultaneously, its metal-armored compartmentalized structure and comprehensive five-proof interlocking system offer enhanced safety. The modular design facilitates expansion and system integration, adapting to complex power distribution needs and resulting in lower overall lifecycle maintenance costs.

Q2: Can this switchgear be adapted to high-altitude or special environments? What is the customization cycle?

A: Yes. For high-altitude environments >1000m, Usune will optimize insulation design and component selection. For special environments such as corrosive, high-humidity, and dusty environments, customized solutions such as anti-corrosion coatings, enhanced sealing, and dustproof barriers can be provided. The production cycle for standard customized products is approximately 15-20 days, depending on the customization complexity and order quantity.

Q3: As a manufacturer, what after-sales and technical support services does Usune provide?

A: As the source factory, Usune provides full lifecycle services: pre-sales include solution design, parameter selection, and technical consultation; sales follow-up includes production progress tracking and factory testing cooperation; after-sales includes free installation and commissioning, operator training, 1-year equipment warranty, lifetime spare parts supply and maintenance services, and 24-hour global response to technical needs to ensure stable equipment operation.