40.5KV Indoor Metalcald AC Enclosed Withdrawable Switchgear KYN61-40.5KV
KYN61-40.5KV Removable AC Metal-Clad Switchgear
KYN61-40.5KV removable AC metal-clad switchgear (hereinafter referred to as switchgear) is a high-voltage electrical equipment specially designed for 40.5KV, three-phase, AC 50/60Hz power grids. It is mainly used for power receiving, power distribution, control, monitoring and protection of electrical equipment in power systems, and is widely applicable to general power systems and occasions requiring frequent operation, such as power plants, substations, industrial and mining enterprises, metallurgical plants, chemical plants, commercial buildings and other high-voltage power distribution scenarios. The product fully complies with national and international standards, including GB 3906 "3~35KV AC Metal Enclosed Switchgear", GB/T 11022 "The Common Technical Clauses of High Voltage Switchgear and Controlgear Standard", DL/T 404-1997 "Order Technical Term of Indoor AC High Voltage Switchgear" and IEC 298 "1~52KV AC Metal Enclosed Switchgear and Controlgear Standard", ensuring high safety, reliability and compliance.Working Conditions
To ensure the long-term stable operation and service life of the KYN61-40.5KV switchgear, it must be installed and used under the following specified working conditions, which are compatible with most conventional high-voltage power distribution environments and can be customized for special scenarios:Ambient Temperature: The operating ambient temperature ranges from -25°C to +45°C, with a daily average temperature not exceeding 35°C. Extreme high or low temperatures will affect the performance of internal electrical components (such as circuit breakers and operating mechanisms), leading to reduced efficiency or equipment failure.
Altitude: The standard installation altitude is ≤1000m; for special orders, it can reach up to 4500m (special insulation treatment is required). Exceeding the standard altitude will affect the insulation performance of the equipment and increase the risk of electrical breakdown.
Relative Humidity: The daily average relative humidity shall not exceed 95%, and the monthly average relative humidity shall not exceed 90%. Excessive humidity will cause moisture condensation inside the switchgear, corrode components and damage insulation performance.
Earthquake Intensity: The switchgear can adapt to earthquake intensity ≤8 degrees, with strong anti-seismic performance, ensuring stable operation even in earthquake-prone areas.
Surrounding Environment: The applicable occasions shall be free of corrosive gases, flammable substances and water vapor, so as to avoid corrosion of the equipment shell, busbars and internal components, and prevent safety hazards such as short circuits.
Product Definition
KYN61-40.5KV removable AC metal-clad switchgear is a modular assembly-type high-voltage switchgear. It takes the removable handcart-type circuit breaker as the core component, integrates control, protection, monitoring and power distribution functions, and adopts advanced composite insulation technology. It is characterized by compact structure, convenient maintenance, strong interchangeability and high safety, and is an essential key equipment in 40.5KV high-voltage power distribution systems.
Product Features
Modular Assembly & Convenient Maintenance: The switchgear is an integrated assembly unit, and the circuit breaker adopts a floor-mounted handcart design. Equipped with an advanced composite insulation vacuum circuit breaker, it has excellent interchangeability and easy replacement. A lead screw nut propulsion mechanism is installed on the handcart frame, which can effectively prevent misoperation and damage to the propulsion mechanism, and the handcart can be easily removed for maintenance and replacement.
Safe & Reliable Operation: All operation steps can be carried out under the closing condition, and there is a mandatory locking mechanism between the main switch, handcart and panel door, which fully meets the five protection requirements (overload protection, short-circuit protection, undervoltage protection, earth fault protection and misoperation protection), effectively avoiding safety accidents caused by misoperation.
Large Cable Connection Space: The cable compartment is designed with a large space, which can realize the connection of multiple cables, adapting to the needs of complex power distribution scenarios and reducing the difficulty of cable installation.
Multiple Protection Functions: The earthing switch is used for equipment earthing and loop short-circuit protection, which improves the safety of equipment maintenance. The enclosure protection level reaches IP3X (IP2X when the door is open), effectively preventing dust, foreign objects and accidental contact, ensuring the safety of operators and equipment.
Structure Features
High-Strength Enclosure: The switchgear is composed of enclosure and handcart. The enclosure is made of galvanized aluminum-zinc steel sheet, processed by CNC machine tool and multi-bending forming, and assembled with bolts. It has high mechanical strength, neat appearance and good corrosion resistance, which can effectively protect internal components.
Reasonable Compartment Division: The switchgear is divided into relay compartment, handcart compartment and cable compartment. When the circuit breaker handcart is in the opening and testing position, the protection level of the enclosure is IP2X, which ensures the safety of inspection and maintenance. The main circuit adopts composite insulation treatment, which can prevent fault expansion and avoid affecting other parts.
Integrated Structural Design: The switchgear is a metal-clad removable type. Current transformers (CT) and earthing switches are installed in the cable compartment and busbar compartment, with reasonable layout and convenient inspection. The new fully insulated vacuum circuit breaker (VCB) or SF6 circuit breaker and spring operating mechanism adopt an integrated console design, which has the advantages of good interchangeability and easy replacement, and greatly improves the operation efficiency and maintenance convenience.
Excellent Protection Performance: The overall protection level of the enclosure is IP3X, which has good dustproof and anti-foreign object performance. The cable compartment has a large space, which not only facilitates cable connection but also provides sufficient space for subsequent maintenance and expansion.
Environmental Adaptability
The KYN61-40.5KV switchgear has strong environmental adaptability, which can operate stably under the specified temperature, humidity, altitude and earthquake intensity conditions. It is suitable for indoor installation and use, and can adapt to various harsh industrial environments (excluding occasions with corrosive gases, flammables and water vapor). Its excellent structural design and material selection ensure that it can maintain stable performance in long-term operation, reduce the frequency of maintenance and replacement, and save operation and maintenance costs for users.Drawing
| ltem | Unit | Data | |
| Rated voltage | KV | 36/38/40.5 | |
| Rated curren | A | 1250,1600,2000,2500 | |
| Rated frequency | Hz | 50/60 | |
| Rated short circuit breaking current | KA | 25,31.5 | |
| 4s rated short time withstand current | KA | 25,31.5 | |
| Rated short circuit making current (peak) | KA | 63,80 | |
| Rated peak withstand current | KA | 63,80 | |
| Insulation leve | Rated lightning impulse withstand voltage | KV | 185 (phase to phase:215) |
| Main circuit 1min power frequency withstand voltage | KV | 95 (phase to phase:110) | |
| Auxiliary circuit 1min power frequency withstand voltage | KV | 2 | |
| Outline dimension(W)*(D)*(H) | MM | 1400/2800/2600 (GPN1 type) 1200/2600/2400 (For VD4/HD4 type | |
| Protection degree | P3X (compartment IP2X) | ||
| Weight | KG | 1000-1850 (GPN1 type) 850-1850 (For VD4/HD4 type) | |
Key Advantages & Application Scenarios
As a high-performance 40.5KV high-voltage switchgear, the KYN61-40.5KV switchgear has the advantages of compliance with international standards, safe and reliable operation, convenient maintenance, strong interchangeability and good environmental adaptability. It is widely used in power generation, power transmission, power distribution and power consumption links of various industries, including power plants, substations, industrial and mining enterprises, metallurgy, chemical industry, building materials, shopping malls, high-rise buildings and other fields, providing safe, efficient and stable power distribution solutions for various high-voltage electrical equipment.
