Dry Wall Bushing (Bushing Current Transformer)

1. Product introduction

FCRG dry-type capacitor type wall bushing is used to gradually reduce the high voltage through the principle of capacitive voltage divider. Thereby, the high-voltage lead wire is grounded through the wall or floor, etc., and plays the role of insulating and supporting the diversion device.

It consists of a primary winding, an outer sheath, a silicone rubber shed, a pressure equalizing cover at both ends, a flange and a conductive wire clip.

No oil, no air, no porcelain, small size, light weight, low maintenance workload, fireproof and explosion-proof, and attached with high-precision through-type current transformers. Since the voltage distribution along the surface is uniform and the silicone rubber material is used as the outer insulation, the pollution flashover voltage can be further improved.

2. Main specifications and models of the product

1. FCRG dry capacitor type wall bushing, the model is FCRG series.

3. Conditions of use

1. Ambient air condition: Ambient air temperature: 45℃－45℃.

2. The selection of creepage distance should comply with the provisions of GB/T 5582.

Creepage ratio is divided into 4 grades:

Class I: 16mm/kV; Class II: 20mm/kV; Class III: 25mm/kV; Class IV: 31 mm/kV

4.The main technical parameters of the product

1. Table 1 and Table 2 show the rated voltage, system working voltage, rated current, insulation level and other parameters of the FCRG wall bushing.

Table 1

Table 2

2. At 1.05Ur/√3 and Ur voltage, the dielectric loss factor tgδ≤0.005.

3. Partial discharge: ≤10pC under rated voltage 1.05Ur/√3.

4. The rest of the technical conditions shall comply with GB/T 4109-2008 "Insulating Bushings with AC Voltage Above 1000V".