XGN66-12 Series High Voltage Switchgear Space Saving Robust Structure

The XGN66-12 Armouring Fixed AC Metal-Enclosed Switchgear is a new generation of high-voltage electrical equipment independently designed and developed by our factory. It perfectly meets the rigorous technical standards of both national criteria (GB3906, DL/T404) and the international standard (IEC60298) for indoor alternating current metal-enclosed switchgear and control equipment operating above 1kV and below 52kV.

By absorbing advanced foreign technologies, the XGN66-12 systematically addresses common industry challenges such as high accident rates and excessive cabinet volume found in legacy switchgear models. It features an exceptionally small cabinet footprint—occupying only about 50% of the space required by conventional switchgear—while delivering superior circuit breaker performance, high structural reliability, and a robust mechanical "Five-Proof" safety interlocking mechanism. It is an ideal space-saving and high-efficiency solution for modern medium-voltage power distribution.

• Ultra-Compact Footprint: Advanced structural engineering reduces the total cabinet size by 50% compared to traditional switchgear, drastically saving installation space and cutting substation civil engineering costs.

• Premium Technical Performance: Integrates high-grade components capable of executing stable control, fault protection, and precise power distribution for 12kV grids.

• Foolproof "Five-Proof" Interlocking: Equipped with a dependable mechanical interlocking mechanism that operates flawlessly to prevent operator errors, ensuring comprehensive personnel protection.

• Optimized Air Insulation Distance: Precision-engineered internal layout guarantees excellent dielectric strength and insulation compliance without relying on complex, high-maintenance gas systems.

X G N 66 - 12 / □ - □

• X: Box structure

• G: Fixed type

• N: Indoor

• 66: Design number

• 12: Rated voltage kV

• □: Rated current A

• □: Rated short-circuit breaking current kA

• Ambient Temperature: Maximum not more than +40°C, minimum not less than -15°C.

• Ambient Humidity: Daily average relative humidity is not greater than 95%; monthly average relative humidity is not greater than 90%.

• Water Vapour Pressure: Daily average value is not greater than 2.2 * 10^-3 Mpa; monthly average value is not greater than 1.8 * 10^-3 Mpa.

• Altitude Restrictions: Standard design is optimized for environments where the altitude does not exceed 1000m.

• Atmospheric Integrity: The surrounding air must not be obviously polluted by dust, corrosive or combustible gases, vapours, or salt spray.

• Vibration: External vibrations or ground motions from switchgear and control equipment outside the installation site can be ignored.

• Electromagnetic Interference: The amplitude of electromagnetic interference induced in the secondary system must not exceed 1.6kV.

• For environments exceeding 1000m altitude (up to 3000m) or other unique operational requirements outside GB/T11022, the user and manufacturer shall negotiate customized engineering solutions.

• Revolutionary 50% Space Savings: Our XGN66-12 reduces cabinet volume by half compared to conventional units, allowing you to maximize layout density in confined indoor substations and dramatically lower civil engineering investments.

• Authority-Certified Engineering: Developed to fully absorb international advanced technologies, the system overcomes traditional failure points, ensuring ultra-low accident rates and high-frequency operational longevity.

• Bulletproof Mechanical Five-Proof Safety: Features a rigid, integrated mechanical interlocking structure that locks out improper actions without relying on electronic sensors, creating an absolute safety barrier for substation operators.

• Premium Grid Fault Suppression: Effortlessly handles short-circuit breaking currents up to 31.5kA and 80kA peak closing currents, ensuring that severe sudden grid faults are safely isolated before affecting your critical upstream infrastructure.

• Tailored Special-Condition Engineering: JNCN Power excels at handling complex operational challenges; we offer verified engineering adaptations for high-altitude zones up to 3000m and high-humidity climates in total compliance with IEC60298 benchmarks.