The electrical ratings for RIF (Resin Impregnated Fiber) dry transformer bushings can vary based on the specific design and application, but they generally include the following key parameters:
1. Voltage Rating: Typically, bushings are rated for various voltage levels, china RIF dry transformer bushing such as 15 kV, 25 kV, or higher, depending on the transformer design.
2. Current Rating: This indicates the maximum current the bushing can safely carry, often measured in amperes (A).
3. Insulation Class: This specifies the thermal endurance of the insulation materials, usually categorized as Class B (130°C), Class F (155°C), or Class H (180°C).
4. BIL (Basic Impulse Level): This rating measures the bushing's ability to withstand impulse voltages, given in kilovolts (kV).
5. Frequency: Most bushings are rated for 50 Hz or 60 Hz applications.
6. Mechanical Properties: This includes ratings for mechanical strength and resistance to environmental factors.
For specific applications, it’s important to refer to the manufacturer's datasheets for precise ratings and compliance with standards.
