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KYN28-6
KYN28-6 Indoor Metal – Clad Withdrawable Switchgear
6kV indoor metal armored movable switchgear is a mainstream equipment in industrial and municipal distribution networks, which complies with GB/T 3906-2020 and DL/T 404-2018 standards and is suitable for medium voltage distribution scenarios such as power plants, chemical parks, and urban distribution networks. The equipment adopts a modular armored structure, which separates different functional components into independent compartments (circuit breaker room, busbar room, cable room, instrument room). It has the characteristics of strong breaking capacity, high safety performance, and flexible expansion, and can achieve centralized distribution, control, and rapid fault removal of electrical energy, adapting to the power supply needs of medium and large loads.
Features
1. High breaking capacity to cope with complex working conditions:
Equipped with medium voltage vacuum circuit breakers, the short-circuit breaking capacity can reach 31.5kA-50kA, which can effectively cut off short-circuit fault currents. It has strong short-term withstand current ability and is suitable for complex working conditions such as large motor starting in industrial scenarios.
2. Multiple interlocks, upgraded safety protection:
Equipped with multiple mechanical and electrical interlocks such as circuit breaker and isolation switch interlocks, handcart position and grounding switch interlocks, cabinet door and internal component interlocks, etc., to prevent dangerous operations such as false closing and load pulling from the source, ensuring the safety of operation and maintenance personnel.
3. Modular design, easy expansion:
The cabinet adopts standardized modular units, which can flexibly combine different functional cabinets such as circuit breaker cabinets, metering cabinets, PT cabinets, and contact cabinets according to power distribution needs. During later expansion, there is no need for overall renovation, only adding new modules and connecting them to the busbar.
4. Strong environmental adaptability, stable and reliable:
The cabinet is made of corrosion-resistant cold-rolled steel plate processed by CNC machining, and the surface is treated with electrostatic spraying, which can withstand harsh indoor environments such as high temperature, humidity, dust, etc; The internal components are made of anti-aging materials and can operate stably in environments ranging from -25 ℃ to 40 ℃.
5. Intelligent integration, adapted to smart distribution:
Reserved installation interfaces for intelligent instruments and sensors, which can integrate functions such as power quality monitoring, fault location, temperature monitoring, etc., support docking with distribution network automation systems, and achieve remote monitoring and intelligent regulation of distribution circuits.
The rated current range of the product is 630A-2500A, and the rated short-time withstand current is 20kA-50kA (3s); Supports two configurations of SF6 circuit breaker or vacuum circuit breaker, which can be selected according to the user’s cost budget and usage needs; The default protection level of the cabinet is IP4X, which can be upgraded to IP54 to meet the requirements of high dust and high humidity scenarios; Provide comprehensive factory inspection reports and type test certificates to ensure product compliance.
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Specification
| PROJECT | UNIT | DATA | |
| Rated voltage | kV | 6 | |
| 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: 20 |
| Fracture: 23 | |||
| Withstand voltage for lightning impulses | kV | intermittent to the ground: 40 | |
| Fracture: 46 | |||
| Ingress protection | The shell is IP4X | ||
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FAQs
What is the core difference between 6kV switchgear and 3.3kV products?
The core difference lies in the adaptation of load and performance parameters: 6kV products have higher breaking capacity and rated current, and can adapt to medium and large industrial loads (such as large motors and production lines); 3.3kV products focus more on compactness and are suitable for small end loads, with different application scenarios and distribution levels.
What could be the possible cause of abnormal noise during equipment operation?
Common causes include: loose busbar joints leading to corona discharge, circuit breaker mechanism jamming, transformer failure, etc. It is recommended to immediately stop running and have professional operation and maintenance personnel troubleshoot. Disassembling on your own is prohibited to avoid safety accidents.
Can unmanned operation and maintenance be achieved?
Sure. By integrating intelligent monitoring modules and remote control functions, the device can upload real-time operating parameters (current, voltage, temperature), automatically alarm and trigger protection actions in case of faults, fully adapting to the needs of unmanned distribution rooms.
What site conditions are required for product installation?
The venue must meet the following requirements: indoor dry and ventilated, ambient temperature of -25 ℃ to 40 ℃, relative humidity ≤ 95% (no condensation); Ground bearing capacity ≥ 8kN/㎡, with sufficient maintenance space reserved (≥ 800mm on both sides of the cabinet and ≥ 1500mm on the front); Stay away from flammable, explosive, and corrosive gas environments.
How long is the warranty period for core components?
The warranty period for cabinet body is 5 years, and the warranty period for core components such as vacuum circuit breakers and transformers is 3 years. If non-human faults occur during the warranty period, the components can be replaced free of charge and on-site maintenance services can be provided. After the warranty period, lifelong technical support and parts supply will be provided.
Related Applications
Chemical Industrial Park: Suitable for the power distribution of production equipment, reaction vessels, pumps and other equipment in chemical enterprises. Multiple interlocking designs can effectively prevent safety risks in flammable and explosive environments, and high breaking capacity can cope with short-circuit faults caused by sudden load changes in chemical production, ensuring production safety.
Urban distribution network substation: As the core equipment of the urban medium voltage distribution network, it is used for energy distribution and control in the substation. The modular design can flexibly adapt to different power supply capacity requirements, and the intelligent integration function facilitates remote monitoring by the power grid dispatch center, improving the operation and maintenance efficiency of the distribution network.
Metallurgical enterprises: supply power to large equipment such as blast furnaces and rolling mills in steel and non-ferrous metal smelting, with strong resistance to high currents and strong impact loads, and can stably support the continuous operation of equipment, reducing production interruptions caused by power distribution failures.
Large commercial complexes: used as the main distribution room for commercial complexes, providing centralized power distribution for high-power loads such as central air conditioning, elevators, and lighting systems. It can be flexibly expanded to meet the expansion needs of the complex’s later business upgrading, and multiple protective measures are taken to ensure the safety of personnel and equipment.
