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KYN28-15
KYN28-15 Indoor Metal – Clad Withdrawable Switchgear
The 15kV indoor metal armored withdrawable switchgear is a specialized equipment designed for medium and high voltage long-distance distribution and large-scale industrial and mining scenarios in China. It complies with GB/T 3906-2020, DL/T 404-2018, and IEC 62271-200 standards and is suitable for scenarios with high requirements for transmission distance and load capacity, such as large mines, cross regional industrial parks, and urban suburban distribution networks. The equipment adopts an ultra-high voltage optimized armored compartment structure, focusing on strengthening insulation resistance and long-distance transmission stability. It has the characteristics of high rated parameters, strong anti-interference ability, and intelligent operation and maintenance, which can achieve efficient transmission, precise control, and rapid fault isolation of medium and high voltage electrical energy.
Features
1. Long distance distribution optimization with excellent voltage drop control:
The circuit topology design is optimized for the 15kV voltage level, equipped with a dedicated voltage compensation module, which can effectively suppress voltage drop problems in long-distance transmission. The terminal voltage deviation is controlled within ± 5%, suitable for medium and high voltage transmission scenarios over 10km.
2. Strengthen insulation tolerance and broaden safety boundaries:
Imported composite insulation materials and vacuum insulation technology are used, with insulation distances between phases and relative to ground reaching 45kV level standards. A partial discharge online monitoring system is equipped, which can withstand extreme disturbances such as lightning overvoltage and operating overvoltage, and eliminate the risk of insulation breakdown.
3. Adaptive protection for working conditions, suitable for complex loads:
Integrated intelligent adaptive protection system can automatically adjust the protection threshold according to the load fluctuation characteristics of mining, industrial parks and other scenarios, supporting multi-mode switching such as overcurrent, overvoltage, differential protection, etc., to avoid equipment failures caused by sudden load changes.
4. Modular expansion and adaptation to phased construction:
Adopting standardized modular unit design, it supports flexible combination of functional cabinets such as circuit breaker cabinets, PT cabinets, and contact cabinets. Later expansion does not require overall modification of busbars and foundations, and can adapt to project phased construction needs, reducing initial investment costs.
5. Anti pollution and anti-corrosion upgrade, suitable for harsh scenarios:
The cabinet adopts fluorocarbon spraying technology and stainless steel connectors, and the internal components are made of anti pollution and temperature resistant materials, which can operate stably in environments with high dust, high humidity, and slight corrosion. It is suitable for complex indoor scenarios such as mines and remote suburbs.
The rated current range of the product is 1600A-4000A, with a short-circuit breaking capacity of 63kA-80kA and a rated short-time withstand current of 63kA (3s); Support full vacuum circuit breaker configuration, optional permanent magnet operating mechanism; The default protection level is IP54, which can be upgraded to IP65. For mining scenarios, a customized dust-proof enhanced version can be provided; The intelligent module supports IEC 61850 and MODBUS TCP communication protocols, and can be connected to industrial control systems and distribution automation platforms; Provide a complete set of type test reports and pollution resistance level certification.
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Specification
| PROJECT | UNIT | DATA | |
| Rated voltage | kV | 15 | |
| Rated frequency | Hz | 50 | |
| The rated current of the main bus | A | 630/1250 | |
| Current rating | A | 630/1250 | |
| Ground Loop Rated Short-Time Withstand Current (2S) | kA | 31.5 | |
| Rated short-time withstand current of main circuit (4S) | kA | 25/31.5 | |
| Rated peak withstand current (peak) | kA | 63/80 | |
| Rated short-circuit interrupting current | kA | 25/31.5 | |
| Rated insulation level | 1 minute power frequency withstand voltage | kV | intermittent to the ground: 38 |
| Fracture: 45 | |||
| Withstand voltage for lightning impulses | kV | intermittent to the ground: 95 | |
| Fracture: 110 | |||
| Ingress protection | The shell is IP4X | ||
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FAQs
What are the differences in long-distance distribution adaptation between 15kV switchgear and 12kV products?
The core difference lies in transmission distance and voltage drop control: The 15kV product optimizes voltage compensation and insulation design specifically for stable coverage of transmission scenarios over 10km, with better voltage drop control; 12kV products focus on local distribution of ultra large loads, and there is a higher risk of voltage drop during long-distance transmission. The two are adapted to different levels of scenarios.
Is the permanent magnet operating mechanism suitable for frequent operation scenarios?
Suitable. The mechanical life of the permanent magnet operating mechanism is over 100000 times, with low operating energy consumption, no mechanical wear, and better resistance to frequent operation than traditional mechanisms. It is particularly suitable for frequent start stop load scenarios such as mines and industrial parks.
How to avoid component fouling faults in dusty environments?
The dust-proof enhanced version adopts a sealed cabinet design, with HEPA high-efficiency filtration devices installed in the ventilation openings. At the same time, the cabinet is equipped with an automatic dust removal module inside, which can regularly clean the surface dust of the components. Combined with anti pollution insulation components, it effectively avoids insulation failures caused by pollution accumulation.
Can linkage control be achieved with the existing 10kV distribution system?
Sure. The device supports voltage level adaptation modules and cross level communication protocol conversion, and can seamlessly integrate with existing 10kV systems to achieve data sharing, collaborative protection, and remote control, without the need for large-scale modifications to existing systems.
How to ensure the warranty period and later supply of accessories for the product?
The cabinet is guaranteed for 5 years, and the core components (circuit breakers, transformers) are guaranteed for 3 years. During the warranty period, free on-site maintenance and replacement of components are provided; The manufacturer reserves a complete set of original accessories, which will be supplied for life after the warranty period, and supports 24-hour technical response.
Related Applications
Large coal mine underground supporting power distribution: used in the central power distribution room of large coal mines to supply power to equipment such as coal mining machines, conveyors, and ventilation systems. It is resistant to pollution, corrosion, and has long-distance adaptability to cope with dusty and high humidity environments underground. The adaptive protection function can avoid power outages caused by load shocks and ensure the continuity of coal mining operations.
Cross regional industrial park power distribution: Suitable for large industrial parks with wide land occupation and cross regional layout, realizing the transmission and distribution of medium and high voltage electricity in various production areas within the park. The modular expansion design can adapt to the phased construction of industrial parks, and the voltage compensation function ensures stable voltage in remote production areas.
Urban suburban distribution network: As the core equipment of the urban suburban distribution network, it is used to connect the urban backbone network with suburban residential and industrial areas. The long-distance transmission adaptability can reduce the number of substations, lower distribution network investment, and improve the reliability of power supply in suburban areas.
Large cement production enterprises: provide power supply for large equipment such as rotary kilns and mills in cement enterprises, with excellent dust resistance and frequent operation resistance. It can cope with high dust environments and frequent equipment start stop requirements in cement production, and stably support the continuous operation of production lines.
