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Solid Load Break Switch

Solid Load Break Switch

ENTEC's three-phase Solid Load Break Switch(LBS) is designed for overhead line application for a voltage class of 25.8kV.

The LBS is operated by spring toggle mechanism and uses vacuum interrupters for arc quenching. It can be operated manually or automatically with an integrated motor drive.

The bushings are made of HCEP(Hydrophobic Cycloaliphatic Epoxy) that provides excellent insulation performance even under harsh climatic environments and polluted areas. The LBS tank and control cubicle are made of stainless steel, which have strong endurance against hot, humid, dusty, or corrosive environment.

In the case of motorized operation, complete microprocessor-based controller(ETMFC101-N1) is provided with metering, monitoring, recording, and communication functions.

The LBS has been fully type tested by accredited laboratories such as KEMA, CESI or KERI according to the international standard IEC 62271-103.

HCEP(Hydrophobic Cycloaliphatic Epoxy) Bushing
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  • Advanced outdoor solid dielectric material
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  • Proven performance in heavily polluted area
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  • Environment-friendly, Oil/SF6 gas free
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  • Reliable and enhanced life expectancy
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  • Superior surface arc tracking resistance
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  • UV Protection, resistant to vandalism
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  • Complied with ANSI standard requirements for creepage / leakage distance
Advanced Reliability of Operation
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  • 5,000 times of operation guaranteed with embedded vacuum interrupter as a maintenance-free product
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  • Manual / Automatic operation available 10,000 times of operation guaranteed
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  • Remote and local operation available via SCADA system
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  • Microprocessor-based controller for feeder automation
Loop control Application
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  • Loop control application available as an Auto Sectionalizer / Tie Point Switch
Electrical ratings
Rated maximum voltage [kV] 12 25.8
Rated current [A] 630 630
Operation manual, automatic manual, automatic
Frequency [Hz] 50 / 60 50 / 60
Short time withstand current, 1sec [kA] 20 12.5
Short circuit making current [kA peak] 50 32.5
Basic impulse withstand voltage [kV crest] 75 150
Power frequency withstand voltage, dry [kV] 42 60
Power frequency withstand voltage, wet [kV] 30 50
Control and operation function RTU built- in or separate digital control
Control Operating voltage 110-220Vac / 24Vdc
Ambient temperature -25 to 70 °C
Power frequency withstand voltage [kV] 2
Basic impulse withstand voltage [kV crest] 6
International standard ANSI 37.60, IEC 62271-111

* NOTE : 25.8kV Solid Load Break Switch Housing - Terminal / Mold - cone Type (Option)

Reference project