Specifications KYN28A-12 Metalclad AC Enclosed Switchgear switchgear distribution box. Rated voltage:12kv IEC62271 CERTIFICATE:ISO9001 -China Top 500 Enterprise -26 years rich experience in manufacturing electrical products -Sales in over 100 countries KYN28A-12(Z) (GZS1) Metalclad AC Enclosed Switchgear. switchgear distribution box. General Ratings: system voltage 3.6kV, 7.2KV, 12KV, rated current up to 4000A, AC three phase 50/60HZ. Application: mainly applicable in the power plant, substation, mineral enterprise to receive and distribute power with the functions of controlling, protecting and monitoring. It also can be used in places where the frequently operations are in need. Standard: IEC62271-200 Working Conditions 1. Ambient air temperature: -15°C~+40°C. 2. Altitude: ≤1000m. 3. Relative humidity : Daily average≤95%, daily averange of vapour pressure≤2.2kpa. 4. Earthquake intensity: ≤magnitude 8. 5. Applicable in the places without corrosive and flammable gas and water vapor. 6. Used in place without frequently intense vibrant. Note: Customized products are available.