·GB/T 4109-2022;
·IEC 60137:2017 – Insulated Bushings for Alternating Voltages Above 1000 V

Model: FCRG–X/Y
- F: Composite main insulation
- C: Wall bushing
- R: Capacitive type
- G: Dry-type insulation with silicone rubber external insulation
- X: Rated voltage, in kV
- Y:Rated current, in A

·Dry-type composite capacitive insulation, oil-free, porcelain-free and gas-free.
·Excellent resistance to pollution and moisture.

·Ambient Temperature: -50°C to +50°C
·Altitude: Designed for an installation altitude of 1000 m. For installations above 1000 m, corrections shall be made in accordance with GB 311.
·Pollution Class: Class IV for outdoor applications and Class III for indoor applications.
(Special requirements shall be specified separately.)

·Applicable Rated Voltage Levels: 12 kV, 24 kV, 40.5 kV, 72.5 kV, 126 kV and 252 kV.
·Rated Primary Current: Up to 6300 A.
(Special design is required for rated currents exceeding 4000 A.)

·60-second power frequency withstand voltage test
·Partial discharge measurement
·Dielectric dissipation factor and capacitance measurement

The relevant lead of the capacitive insulation system must be reliably grounded during normal operation.