Overview:

The KYN28-12 indoor AC armored withdrawable metal-enclosed switchgear is designed for three-phase AC systems with a rated voltage of 12kV and a rated frequency of 50Hz. It is used for receiving and distributing electrical energy and for controlling, protecting, and monitoring circuits.

Operating Conditions:

• Ambient temperature: Maximum +40°C, minimum -15°C (can reach -45°C with special processes);
• Ambient humidity: Daily average <95%, monthly average ≤90%;
• Altitude: Below 1000 meters;
• Earthquake resistance: Seismic intensity not exceeding 8 degrees;
• The surrounding air should be free from corrosive or flammable gases, water vapor, and significant pollution;
• Suitable for locations without severe pollution and frequent intense vibration, designed to meet Class 1 requirements under harsh conditions;
• For use in conditions exceeding the normal environmental conditions specified in GB3906, users should consult with the manufacturer.

Notes:

1. When the relative humidity exceeds 70%, the electric heater should be turned on.
2. For areas with an altitude exceeding 1000 meters, refer to JB/Z102-71 for appropriate handling.