(1) The Open-Type IP00, which provides front protection against access to the internal components of the variable frequency power supply that are not reachable by the human body.
(2) Enclosed with IP20 and IP21 protection ratings, this type of variable frequency power supply features an outer casing, allowing for wall-mounted installation on the interior walls of buildings. It is suitable for most indoor installation environments (this is a commonly used protection structure by Tongyuan). Aviation ground power supply 2, 36V aviation power supply 1, 400Hz variable frequency power supply 7, 115/200V power supply 2, 27V DC power supply 5, 400Hz power supply 12, aviation power supply.
(3) Sealed IP40, IP42 ratings, suitable for industrial environments with poor conditions.
(4) The enclosed type with IP54, IP55 ratings features dust and water-resistant protective structures, suitable for industrial environments with poor conditions, such as water splashes, dust, and certain corrosive gases.
