English
KYN28 series high-voltage switchgear is a common indoor metal armored mid-mounted switchgear, which is widely used in power systems from 3.6kV to 12kV. It is mainly used in power plants, substations, industrial and mining enterprises and other places, as an important equipment for power distribution and control. The following is a detailed description of KYN28 high voltage switchgear:
1. Structure and composition
KYN28 high-voltage switchgear adopts metal armor structure, which has high mechanical strength and protection level. Its main components include:
Cabinet body: It is welded by steel plate and divided into multiple compartments, including circuit breaker room, bus room, cable room, relay room, etc. The compartments are separated by metal partitions to ensure safety.
Circuit breaker: Vacuum circuit breaker is usually used, which has high breaking capacity and long life. The circuit breaker is mounted on a mid-mounted handcart for easy maintenance and replacement.
Bus system: used to connect the power transmission between the cabinets, usually using copper or aluminum bars.
Cable room: used to connect incoming and outgoing cables, usually equipped with cable heads, grounding switches, etc.
Relay room: install protection relays, measuring instruments, control elements, etc., which are used to monitor and control the operating status of the switch cabinet.
Operating mechanism: includes manual and electric operating mechanism, which is used to control the opening and closing operation of the circuit breaker.
2. Key features
High safety: KYN28 cabinet adopts metal armor structure, and the compartments are completely isolated from each other to prevent the spread of faults. The cabinet is also equipped with a pressure relief device to ensure that pressure can be safely relieved in the event of an internal failure.
Easy to operate: The circuit breaker is installed on the mid-mounted hand car, which can be easily pulled out and pushed in, which is convenient for maintenance and overhaul. The design of the operating mechanism is reasonable, the operating force is small, and the reliability is high.
High protection level: The protection level of the cabinet usually reaches IP4X, which can effectively prevent the entry of dust and foreign objects.
Modular design: KYN28 cabinet adopts modular design, which is easy to expand and combine, and can meet the needs of different users.
Intelligent: Modern KYN28 cabinets are usually equipped with intelligent monitoring systems, which can monitor the operating status of the switch cabinet in real time and provide remote control and fault diagnosis functions.
3. Technical Parameters
Rated voltage: 3.6kV, 7.2kV, 12kV
Rated current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, etc
Rated short-circuit breaking current: 20kA, 25kA, 31.5kA, 40kA, etc
Rated short-time withstand current: 20kA, 25kA, 31.5kA, 40kA, etc
Rated peak withstand current: 50kA, 63kA, 80kA, 100kA, etc
Degree of protection: IP4X (enclosure), IP2X (internal compartment).
4. Fields of application
Power plant: used for generator export, plant power system, etc.
Substation: used for power distribution system, transformer protection, etc.
Industrial and mining enterprises: used for high-voltage motor control, power distribution system, etc.
Urban power grid: used for distribution substation, ring network power supply, etc.
5. Maintenance and upkeep
Regular inspection: Regularly check the mechanical parts, electrical connections, insulation status, etc. of the switchgear to ensure its normal operation.
Cleaning and maintenance: Keep the inside of the cabinet clean to prevent the accumulation of dust and foreign matter.
Operation training: professional training is provided to operators to ensure that they are familiar with the operating procedures and safety precautions of the switchgear.
6. Safety Precautions
Pre-operation inspection: Before operating the switch cabinet, it is necessary to check the status of the circuit breaker, the position of the grounding switch, etc., to ensure the safety of operation.
Prevent misoperation: Operate in strict accordance with the operating procedures to prevent accidents caused by misoperation.
Troubleshooting: In the event of a failure, the power supply should be cut off immediately and repaired by professionals.
KYN28 high-voltage switchgear has been widely used in power systems due to its high reliability, safety and flexibility. With the continuous advancement of technology, KYN28 cabinets are also developing in the direction of intelligence and digitalization, providing users with more efficient and convenient power solutions.
High pressure KYN-28 cabinet
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