The KYN28-24 Metal-Clad Withdrawable AC Switchgear is designed for indoor three-phase AC power systems operating at 50/60Hz with a rated voltage of 24kV. It is widely used in power plants, substations, industrial and mining enterprises, and high-rise buildings for the reception, distribution, control, protection, and monitoring of electrical energy.
The KYN28-24 switchgear is equipped with comprehensive interlocking mechanisms to prevent operational errors, including:
Prevention of moving the circuit breaker truck under load
Prevention of closing the circuit breaker when the earthing switch is in the closed position
Prevention of closing the earthing switch when the circuit is energized
Prevention of accidental access to live compartments
Other safety interlock functions to ensure operator and equipment protection
The switchgear can be equipped with high-performance medium-voltage vacuum circuit breakers such as ABB VD4, VS1, VH2, as well as equivalent models from leading manufacturers including ABB, Mitsubishi, Schneider Electric, and Siemens.
The secondary control circuit incorporates advanced and reliable protection and control components to ensure stable system operation. The main busbar system utilizes heat-shrink insulation materials or epoxy-coated insulation technology, while the electrode design is optimized to improve electrical performance and insulation reliability.
With its compact cabinet structure, advanced technology, stable performance, and user-friendly operation, the KYN28-24 switchgear provides a safe and reliable solution for medium-voltage power distribution applications.
Rated Voltage |
24 kV |
Rated Frequency |
50/60 Hz |
Rated Insulation Level |
1 min Power Frequency Withstand Voltage: 65 kV / 79 kV |
|
Lightning Impulse Withstand Voltage: 125 kV / 145 kV |
|
Auxiliary Control Circuit Power Frequency Withstand Voltage: 2000 V |
Rated Current |
630, 1250, 1600, 2000, 2500, 3150 A |
Rated Short-circuit Breaking Current |
20, 25, 25, 31.5 kA |
Rated Short-circuit Making Current |
50, 63, 63, 80 kA |
Rated Short-time Withstand Current |
20, 25, 25, 31.8 kA |
Rated Peak Withstand Current |
50, 63, 63, 80 kA |
Auxiliary Control Circuit Rated Voltage |
DC or AC 110/220 V |
Protection Degree |
IP4X |
Key Features
Rated Voltage: 24kV
Frequency: 50/60Hz
Indoor metal-clad withdrawable design
Comprehensive anti-misoperation interlocking system
Compatible with VD4, VS1, VH2 and similar vacuum circuit breakers
Advanced protection and control systems
Heat-shrink or epoxy-coated busbar insulation
Compact and space-saving structure
High operational safety and reliability
Easy installation, operation, and maintenance
Applications
The KYN28-24 Metal-Clad Withdrawable AC Switchgear combines advanced engineering, robust safety features, and dependable performance, making it an ideal choice for modern medium-voltage power distribution systems.
