Products

Dongfa Intelligent supplies the 12kV Indoor Earthing Switch 31.5kA for switchgear builders and power engineering procurement teams. This 12kV unit is rated for 31.5kA/4s short-time withstand current, 80kA short-circuit making current, 80kA peak withstand current, 42kV power-frequency withstand voltage, and 75kV lightning impulse withstand voltage. Mechanical life is 3,000 operations. Nine phase spacings from 150mm to 275mm are available; 150mm spacing requires phase-to-phase insulating partitions.

Dongfa Intelligent is a manufacturer and supplier of 40.5kV Indoor Disconnect Switch for indoor high-voltage switchgear applications. The GN27-40.5 series provides 630A and 1250A configurations, with 20kA/31.5kA 4s short-time withstand current and 50kA/80kA rated peak withstand current. The series also provides 185kV/215kV lightning impulse withstand and 95kV/115kV power-frequency withstand for different insulation conditions. Procurement teams can provide switchgear requirements for configuration review.

The GN30-24D series is a 24kV Indoor Disconnect Switch with Earthing Switch, manufactured by Dongfa Intelligent. The disconnector and earthing switch are mounted on the same base. Four current ratings are available: 400A, 630A, 1000A, and 1250A. Thermal stability current ranges from 12.5kA to 31.5kA (4s), and dynamic stability current from 31.5kA to 80kA. The insulation level is 42kV power-frequency withstand and 75kV impulse withstand.

Dongfa Intelligent supplies 24kV Indoor High Voltage Disconnect Switchs for global switchgear builders and power engineering procurement teams. The GN30-24 series covers 400A, 630A, 1000A, and 1250A current ratings, with thermal stability current from 12.5kA to 31.5kA, dynamic stability current from 31.5kA to 80kA, 42kV power-frequency withstand, and 75kV impulse withstand. It is available in Flat-in/Flat-out and Vertical-in/Flat-out installation types.

For outdoor distribution systems built around a 15kV nominal voltage, the 15kV Outdoor High Voltage Isolator Switch provides a 17.5kV working-voltage configuration with 400A and 630A current options. Its 55kV/65kV power-frequency withstand and 105kV/120kV lightning impulse withstand ratings provide defined electrical parameters for insulation coordination, while the 2,000-operation mechanical life supports routine isolation and maintenance requirements.

Dongfa Intelligent provides the 12kV Outdoor High Voltage Disconnect Switch series for outdoor medium-voltage power distribution, covering 12kV, 17.5kV, and 24kV working voltage configurations. The series offers rated current options from 200A to 1250A, with different withstand-current and insulation levels for project-specific selection. Phase arrangement, installation method, environmental conditions, and electrical requirements can be considered when confirming the suitable configuration.