Can a switchgear temperature rise under natural convection?

It was found that the temperature rise of the switchgear cannot reach the IEEE standard (temperature rise less than 65 °C) under natural convection, and forced convection must be adopted to ensure the safe operation of the switchgear.

Does the insulation and temperature rise design of switchgear meet national standards?

In order to check whether the insulation and temperature rise design of the switchgear meets the requirements of national standards, a simulation model of electric field and temperature field is established. According to the results, optimized design of insulation and temperature rise was carried out. 2. New switchgear design

What is the surface heat transfer coefficient of a switchgear cabinet?

The switchgear cabinet surface is set as the third boundary condition, with surface heat transfer coefficient h = 10 W/ (m 2 ∙K). Surface-to-surface radiation occurs between the conductive circuit, insulated component, and the cabinet wall, where the conductive circuit surface emissivity is ε2 = 0.5.

What is the maximum temperature rise of a switchgear?

The heat field results reveal that even in the condition of passing through current with long operation time, the maximum temperature rise of the switchgear is 55.9 K and 48.7 K respectively, which is lower than the standard design requirement 70 K.

Can high-voltage switchgear improve the reliability and safety of power supply?

In order to improve the reliability and safety of power supply and reduce the failure rate of switchgear, this paper designs a novel high-voltage switchgear which is reliable and safe.

Can heat pipes solve the problem of contact overheating in switchgear?

Research on the application of heat pipes in the electrical field is still in its infancy, but the superior thermal conductivity of heat pipes provides an effective solution to the problem of contact overheating in switchgear.