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252kV Composite Housed Cable Entry Type Bushing
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252kV Composite Housed Cable Entry Type Bushing

252kV Composite Housed Cable Entry Type Bushing

Our 252kV composite housed cable entry type bushings feature fully sealed dry-type capacitive cores with high-performance silicone rubber housing, designed for cable entry/exit insulation in EHV transformers, reactors, and GIS applications.

• Rated voltage 252kV with current options of 630A and 1250A; creepage distance 8594mm ensures superior pollution flashover resistance.

• Partial discharge ≤10pC at 1.5 Um/√3 kV; dielectric loss factor ≤0.5%; power frequency withstand 505kV; lightning impulse withstand 1050kV.

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

• Maintenance-free silicone rubber housing offers excellent weather ability, mechanical strength, and environmental adaptability.

• Compliant with IEC 60137; ideal for extra-high voltage transmission and distribution systems.

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

 

The 252kV Dry-Type Capacitive Transformer Composite Bushing (Through Cable Type) is a key cable-entry insulation component designed for high-voltage electrical equipment at the 252kV level. It features a fully sealed dry-type capacitive core and a high-performance composite insulation housing, making it suitable for cable entry or exit insulation in transformers, reactors, GIS, and similar apparatus. The product delivers excellent electrical insulation performance, mechanical strength, and environmental adaptability.
This series offers two rated current levels, 630A and 1250A, to meet the insulation and current-carrying requirements of equipment with different capacities. Suitable for medium to high altitude regions, it serves as a safe, reliable, and maintenance-free insulation component in extra-high voltage (EHV) transmission and distribution systems.

 

Technical Specifications

 

Model FBRG-252/630 FBRG-252/1250 FBRGL-252/630 FBRGL-252/1250
Rated Voltage (Ur) 252 kV 252 kV 252 kV 252 kV
Rated Current (Ir) 630 A 1250 A 630 A 1250 A
Creepage Distance 8594mm 8594mm 8594mm 8594mm
Altitude 1000m 1000m 1000m 1000m
Dielectric Dissipation Factor (tan δ) ≤0.5% ≤0.5% ≤0.5% ≤0.5%
External Insulation Material Silicon rubber Silicon rubber Silicon rubber Silicon rubber
Partial Discharge (at 1.5 Um/√3) ≤10 pC ≤10 pC ≤10 pC ≤10 pC
Colour Grey Grey Grey Grey
Power Frequency Withstand Voltage 505 kV 505 kV 505 kV 505 kV
Standard Compliance IEC 60137 IEC 60137 IEC 60137 IEC 60137
Lightning Impulse Withstand Voltage 1050 kV 1050 kV 1050 kV 1050 kV
Terminal Material Tin-plated copper Tin-plated copper Tin-plated copper Tin-plated copper

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