KYN28A
Metal-Clad Withdrawable Switchgear
The KYN28A-12 metal-clad withdrawable switchgear is suitable for three-phase AC 50Hz power systems with a rated voltage of 12kV. It is mainly used in various types of substations, power plants, and industrial building distribution systems, providing functions for circuit control, protection, monitoring, and measurement. The product features intelligent functionality, including an electric truck and electric earthing switch, online monitoring of switch mechanical characteristics, and capabilities for unmanned operation and remote intelligent maintenance. The switchgear is equipped with a comprehensive "five-proof" interlocking function to ensure both operator and power supply safety.
Features
● Standards: GB/T 3906-2020 GB/T 1984-2014 DL/T404-2018, DL/T593-2016 IEC62271-100:2021IEC62271-200:2021
● Rated voltage: up to 12 kV
● Rated current: 630A~5000A
● Rated short-circuit breaking current: 20~50kA
● Frequency: 50Hz
● Rated short-circuit withstand current: up to 50 kA
● Rated peak withstand current: up to 130 kA (peak factor 2.6, higher than the national standard)
● Rated short-circuit current breaking times: up to 50 times
● Mechanical lifespan: up to 50000 cycles
Strength
● The cabinet body is made from high-quality aluminum-zinc-coated steel plates, processed and assembled using precision CNC machines and multi-bending techniques.
● The switchgear has standardized, aesthetically pleasing, and environmentally friendly dimensions. It consists of a fixed cabinet body and a removable component (referred to as the truck). The switchgear’s external protection level is up to IP4X, while the internal compartment protection level is IP2X.
● The truck and earthing switch have reliable mechanical interlocks with the cabinet door, ensuring flexible, safe, and reliable operation.
● It is designed to accommodate the HFEV-12 series vacuum circuit breaker and is also compatible with similar domestic and international
circuit breakers and contactor products.
Appliance
Transformer Substation
Power Plant
Industrial Building