KYN28A-12(GZS1-12) metalclad movable switchgear is suitable for operating in the power system of three phases, rated voltage 12KV, rated frequency 50Hz, to receive and distribute electricity and control, protect, and monitor the line. Complied standards:  

Comply with GB3906 AC metal-enclosed switchgear and controlgear for rated voltages above 3 kV and up to and including 35 kV, GB/T11022 Common specifications for high-voltage switchgear and controlgear, IEC60298 AC metal-enclosed switchgear and controlgear for rated voltage above 1 kV and up to and including 52 kV, DL/T404 Purchase technical specifications for indoor AC high voltage switchgear standard.  

Normal service conditions

■ Ambient air temperature:  Maximum air temperature: +40℃, Minimum air temperature: -15℃ (Under a special process, up to -45 ℃);

■ Altitude: ≤ 1000m;

■ Humidity:Daily average value of relative humidity: ≤95%

Monthly average value of relative humidity: ≤90%

■ Earthquake grade less than Degree 8

■ The ambient air is not significantly polluted by dust, smoke, corrosive and/or flammable gases, vapours or salt.

■ No serious contamination and severe vibration recurrent, severe degree designed to meet the harsh conditions of Class 1 requirements; 

■ When used in excess of the normal environmental conditions specified in GB3906, negotiated by the user and the manufacturer. 

Note:① relative humidity greater than 70% should be turned on the electric heater. 

   ② Where 1000m altitude over the place, according to JB/Z102-71 regulations.