KYN61-40.5 Armored Removable AC Metal Enclosed Switchgear

KYN61-40.5 is a high-performance indoor armored removable metal-enclosed switchgear designed for 40.5kV medium-voltage AC power distribution systems. It features an independent compartmental structure and complete mechanical interlock devices to prevent operational errors. Equipped with a withdrawable vacuum circuit breaker trolley, the equipment supports convenient installation, inspection and replacement. Featuring excellent dielectric performance and strong short-circuit withstand capability, it is widely applied in power plants, substations, industrial parks and commercial facilities for safe power control and protection.

Customize from Our Standard Product Line

If you spot a near-match in our catalog, we can quickly modify our standard transformers for your application. Adjustments cover capacity, voltage class, cooling type and installation structure.

Build per Your Technical Documents

Send us your specifications or drawings. Our engineering team reviews the design, validates all key parameters with you, and manufactures strictly in accordance with international standards.

Full Custom Design from Concept to Completion

Without formal detailed specs? Share your ideas and functional requirements. We partner with you to develop fully customized transformer solutions, from electrical design and structural layout through to insulation system.

Overview
Product Overview
Customization and Technical Support
Application
FAQ
Transportation Services & Process

Overview

Compliance Standards：
1. Fully compliant with IEC 62271‑200 international standard for high‑voltage switchgear and controlgear.
2. Strictly designed and tested in accordance with national standard GB 3906 for 3.6kV～40.5kV AC metal‑enclosed switchgear.
3. Meets global universal technical specifications, safety assessment and quality control requirements for medium‑voltage power distribution equipment

Operating Conditions：
1. Installation Environment: Indoor fixed installation, suitable for dry and clean power distribution rooms.
2. Ambient Temperature: -10°C ～ +40°C, no severe temperature fluctuation.
3. Humidity Condition: Maximum relative humidity ≤95%, no condensation or frost on equipment surface.
4. Altitude Range: Standard applicable altitude ≤1000m; customized design available for high‑altitude areas.
5. Site Environment: Free from explosive dust, corrosive gas, severe vibration and electromagnetic interference

Bardeen presents the KYN61‑40.5 Armored Removable AC Metal Enclosed Switchgear, a robust solution engineered for modern medium‑voltage distribution systems. The KYN61‑40.5 switchgear is designed to meet rigorous industrial, utility, and commercial requirements, delivering reliable performance and flexible configuration options. As a leader in power equipment manufacturing, bardeen ensures the KYN61‑40.5 switchgear combines advanced design, safety, and maintainability for demanding grid environments.

Product Overview

Product Overview & Key Features

Product Overview
The KYN61‑40.5 switchgear is an armored removable switchgear line tailored for 40.5kV applications. This KYN61‑40.5 switchgear is a metal enclosed AC switchgear system that provides comprehensive protection, control, and isolation of power circuits. The KYN61‑40.5 switchgear architecture supports a modular layout to accommodate breakers, instrument transformers, protection relays, and auxiliary devices within a compact footprint.

Key Features
- Armored Removable Construction: The armored removable switchgear design allows front access to primary and secondary compartments while ensuring a high degree of protection and mechanical integrity. The armored removable switchgear format simplifies inspection, maintenance, and replacement of components.
- Metal Enclosed Housing: The metal enclosed AC switchgear enclosure provides enhanced electromagnetic shielding, structural strength, and environmental protection, making the metal enclosed AC switchgear suitable for indoor and controlled outdoor substations.
- 40.5kV Grid Compatibility: Specifically engineered for 40.5kV distribution networks, the KYN61‑40.5 switchgear meets the performance demands of modern 40.5kV grid equipment deployments, providing seamless integration with transformers, lines, and protection systems.

Continued Key Features & Technical highlights
- Modular Removable Units: Each unit within the KYN61‑40.5 switchgear can be configured as a circuit breaker compartment, bus section, or cable feeder, enabling scalable 40.5kV grid equipment solutions that evolve with system requirements.
- Safety & Interlocks: Integrated mechanical and electrical interlocks in the armored removable switchgear safeguard personnel and equipment by ensuring correct operating sequences and preventing unsafe operations.

Technical highlights include:
- Robust Busbar Systems: Sized for high short‑circuit currents common in 40.5kV grid equipment networks.
- Vacuum Circuit Breakers: Superior interrupting capability housed directly within the armored removable switchgear framework.
- Precision Metering: High‑accuracy instrument transformers supporting protection schemes and network analytics.
- Flexible Wiring: Variable cable and busbar arrangements accommodating site‑specific layouts for the metal enclosed AC switchgear.

Customization and Technical Support

Customization and Technical Support
Bardeen offers tailored KYN61‑40.5 switchgear configurations to align with project specifications. Whether the requirement is for a compact metal enclosed AC switchgear bank for a commercial substation or an armored removable switchgear assembly for a large utility installation, bardeen can adapt the KYN61‑40.5 switchgear layout, protection schemes, and auxiliary systems to meet the unique needs of any 40.5kV grid equipment project.

Core Merits
1. Safe & Reliable: Independent compartment design and full mechanical interlock avoid mal‑operation; IP4X protection grade prevents dust and foreign object interference.
2. Easy Maintenance: Removable VCB trolley supports quick replacement and on‑site maintenance, improving operation efficiency.
3. Strong Adaptability: Multiple current and short‑circuit grade options support customized configuration for diverse project demands.
4. Standard Compliance: Strictly manufactured per IEC and GB standards, ensuring stable performance for long‑term continuous operation.

Application

Application Scenarios

Power generation plants and power station substations.

Heavy‑industry facilities, mines and large manufacturing plants.

Commercial campuses, large public building substations.

Renewable energy & energy storage power station switch rooms.

Utility substations for urban & rural medium‑voltage distribution networks.

FAQ

Frequently Asked Questions

Q1: What is a metal‑clad withdrawable switchgear? What are its main features?A: A metal‑clad withdrawable switchgear (such as the KYN series) is a fully enclosed, fully compartmentalised power distribution device. Its distinctive feature is that the busbar compartment, circuit breaker compartment, cable compartment, and instrument compartment are independently separated from each other, with each compartment using metal partitions that are grounded and shielded. The core advantages are: the withdrawable circuit breaker trolley can be flexibly pulled out, facilitating online inspection, maintenance, or rapid replacement, which greatly reduces outage time. At the same time, the strict compartmentalised design effectively limits the scope of internal fault arc hazards, enhancing operational safety.

Q2: What is the "five‑prevention interlocking" function of a switchgear, and why is it important?A: The "five‑prevention interlocking" is a mandatory mechanical or electrical interlocking device that ensures operator safety and reliable equipment operation. It includes:
Preventing incorrect opening or closing of the circuit breaker;
Preventing opening or closing of the disconnector (i.e., the trolley) under load;
Preventing the closing of the earthing switch when the equipment is live;
Preventing the closing of the circuit breaker when the earthing switch is closed (i.e., with an earth connection);
Preventing inadvertent entry into live compartments.
This design physically eliminates the possibility of human misoperation and is a core requirement of electrical safety regulations.

Q3: How do I choose between fixed‑type and withdrawable (trolley‑type) switchgear based on project requirements?A: The choice mainly depends on the requirements for power supply reliability and maintenance efficiency
Withdrawable type (e.g., KYN series): Recommended for critical loads, applications requiring frequent operation, or scenarios demanding rapid fault recovery (such as large factories and data centres). The circuit breaker trolley can be kept as spare inventory; in case of a fault, it can be directly replaced as a whole, restoring power very quickly.
Fixed type (e.g., GGD, XGN series): Suitable for applications with stable loads and less stringent outage time requirements (such as general building power distribution). They have a simpler structure and relatively lower cost, but maintenance typically requires an overall busbar outage.

Transportation Services & Process

1. Heavy‑Lift & OOG Expertise

Specialized handling for Over‑Out‑of‑Gauge (OOG) cargo. We manage the entire process for heavy transformers, from custom crating and vacuum packaging to flat‑rack, break‑bulk, or Ro‑Ro shipping.

2. Customs & Compliance Management

Expert handling of complex export/import documentation, HS codes, and destination country regulations. We ensure smooth customs clearance to avoid costly delays.

3. Real‑Time Visibility & Risk Control

24/7 GPS tracking and milestone updates. Comprehensive cargo insurance covering all risks from origin warehouse to destination site.

4. Emergency Response

Prioritized air freight and expedited sea options for critical breakdowns. We minimize downtime by getting your replacement transformer or parts there faster.

Process

Assessment & Planning

We analyze the dimensions, weight, and route to design the optimal transport plan.

Professional Packaging

Seaworthy packing