KYN28-12 Armored mid mounted AC metal enclosed switchgear

In the application process of KYN28-12 armored central cabinet type metal enclosed switchgear in the field of power supply and distribution, in order to prevent electrical misoperation, various mechanical and electrical interlocking devices are designed in the switchgear according to relevant national standards. The interlocking circuit between the busbar separation switchgear and busbar isolation switchgear in the central cabinet is explained, and the interlocking circuit between the busbar separation switchgear and busbar isolation switchgear is designed by analyzing the principle of the locking circuit, which improves the reliability of equipment operation.

Conditions for use of KYN28-12 armored switchgear

1. Surrounding air pollution temperature: maximum temperature+40C, minimum temperature -15C.

2. Humidity conditions: daily average relative humidity: s95%. The daily average water vapor pressure does not exceed 2.2kPa. The monthly average relative humidity is 90%, and the monthly average water-based gas pressure does not exceed 1.8 kPa

3. Altitude: 1000m and below.

4. Earthquake intensity: not exceeding 8 degrees.

5. The surrounding air should not be significantly polluted by corrosive or combustible gases, water vapor, etc. Mid mounted)

6. No frequent and intense vibration in the workplace.

7. Use under normal conditions exceeding GB3906 regulations shall be negotiated between the customer and the supplier.