24kV Composite Housed Rod Type Bushing

Our FBRG series 24kV composite housed cable entry type bushings feature capacitive grading structure with high-performance silicone rubber composite insulation, designed for epoxy resin cast dry-type transformers in indoor distribution systems.

• Rated voltage 24kV with current options from 630A to 5000A; creepage distance 744mm ensures reliable insulation.

• Partial discharge ≤10pC at 1.5 Um/√3 kV; dielectric loss factor ≤0.5%; power frequency withstand 61kV; lightning impulse withstand 125kV.

• Superior hydrophobicity and pollution flashover resistance for demanding environments.

• Tin-plated copper terminals provide low contact resistance; suitable for altitudes up to 1000m.

• Compliant with GB/T 4109 and IEC 60137; ideal for data centers, commercial complexes, industrial plants, and new energy stations.

• Fast delivery, reliable quality, responsive service, and extensive project experience backed by our company.

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Product Overview

The FBRG series dry-type capacitive transformer composite bushings are specifically designed for high-voltage terminations of epoxy resin cast dry-type transformers. These bushings incorporate a capacitive grading structure and utilize high-performance silicone rubber composite insulation. Featuring an internal through-rod connection, they are suitable for indoor distribution systems with voltage ratings up to 24kV. The series offers excellent electrical insulation performance, superior hydrophobicity, and pollution flashover resistance. Easy to install, safe, and reliable, they are widely used in power distribution applications with high demands for space, weight, and safety, such as data centers, commercial complexes, industrial plants, and new energy power stations.

Technical Parameter Summary Table
Parameter Item	FBRG-24/630	FBRG-24/1250	FBRG-24/1600	FBRG-24/2500	FBRG-24/3150	FBRG-24/4000	FBRG-24/5000
Type	FBRG-24/630	FBRG-24/1250	FBRG-24/1600	FBRG-24/2500	FBRG-24/3150	FBRG-24/4000	FBRG-24/5000
Rated Voltage (Ur)	24 kV	24 kV	24 kV	24 kV	24 kV	24 kV	24 kV
Rated Current (Ir)	630A	1250 A	1600 A	2500 A	3150 A	4000 A	5000 A
Creepage Distance	744 mm	744 mm	744 mm	744 mm	744 mm	744 mm	744 mm
Suitable Altitude	1000 m	1000 m	1000 m	1000 m	1000 m	1000 m	1000 m
Dielectric Dissipation Factor (tanδ)	≤0.5%	≤0.5%	≤0.5%	≤0.5%	≤0.5%	≤0.5%	≤0.5%
Partial Discharge at 1.5 Um / √3 kV (pC)	≤10	≤10	≤10	≤10	≤10	≤10	≤10
Power Frequency Withstand Voltage	61 kV	61 kV	61 kV	61 kV	61 kV	61 kV	61 kV
Lightning Impulse Withstand Voltage	125 kV	125 kV	125 kV	125 kV	125 kV	125 kV	125 kV
External Insulation Material	Silicone Rubber	Silicone Rubber	Silicone Rubber	Silicone Rubber	Silicone Rubber	Silicone Rubber	Silicone Rubber
Color	Grey	Grey	Grey	Grey	Grey	Grey	Grey
Terminal Material	Tin-Plated Copper	Tin-Plated Copper	Tin-Plated Copper	Tin-Plated Copper	Tin-Plated Copper	Tin-Plated Copper	Tin-Plated Copper
Applicable Standard	GB/T 4109;IEC 60137	GB/T 4109;IEC 60137	GB/T 4109;IEC 60137	GB/T 4109;IEC 60137	GB/T 4109;IEC 60137	GB/T 4109;IEC 60137	GB/T 4109;IEC 60137
Mounting Height (Center-to-Center)	950±20mm	965±20mm	965±20mm	995±20mm	1055±20mm	1040±20 mm	1130±20 mm

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24kV Porcelain Housed Cable Entry Type Bushing

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