Overhead Line

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  • Solid Automatic Circuit Recloser

Solid Automatic Circuit Recloser

Solid Automatic Circuit Recloser

Entec's Single/Three-Phase Solid Automatic Circuit Reclosers(EPRIS/EPR-1, EPR-2, EPR-3) are designed for the application in overhead line and substation for voltage classes up to 15kV, 27kV, and 38kV.

The operating mechanism uses a permanent magnetic actuator that guarantees high reliability and maintenance-free operation. It uses vacuum interrupters encapsulated in epoxy bushings for arc quenching, eliminating the need for the insulants such as oil and gas.

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

The Recloser is supplied with complete microprocessor-based controller(ETR300-R or EVRC2A-NT) including metering, monitoring, recording, and communication functions.

TThe Recloser has been fully type tested by accredited laboratories such as KEMA, CESI or KERI according to the international standard ANSI/IEEE C37.60 and IEC 62271-111.

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 requirement for contamination Requirements of creepage / leakage distance
Magnetic Actuator
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  • 10,000 times of operation guaranteed
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  • Enhanced reliability by eliminating the mechanical latches
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  • Maintenance free due to Minimized moving components
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  • Reduced Installation and Operating Cost
Installation Environment
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  • Pole/Substation Mounting available
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  • All accessories included such as Control Power cable, Mounting bracket etc.
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  • Operating Temperature: -40°C to 80°C
Other Technical Features
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  • RVD : Resistive Voltage Divider (1%)
    CVD : Capacitive Voltage Divider(2.5%)
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  • Manual Trip Operation available
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  • Hundreds of open/close operations with fully charged battery(18Ah/30hours) in case of AC supply input loss
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  • Various CT ratio available
Electrical ratings
Description Single Phase Three Phase
Rated maximum voltage [kV] 15.5 15.5 27 38
Rated current [A] 630 630 630 800
Frequency [Hz] 50/60 50/60 50/60 50/60
Short circuit breaking current [kA] 16 16 12.5/16 16
Short time withstand current, 3sec [kA] 16 16 12.5/16 16
Short circuit making current [kA peak] 40 40 32.5/40 40
Cable charging breaking current [A] 10 10 25 40
Line charging breaking current [A] 2 2 5 5
Basic impulse withstand voltage [kV crest] 110 110 150 170
Power frequency withstand voltage, dry [kV] 50 50 60 70
Power frequency withstand voltage, wet [kV] 45 45 50 60
Control Operating voltage 110-240Vac / 125Vdc
Operating voltage -40 to +80 °C
Degree of protection IP 55
Maximum operations 10,000 times
International standard ANSI 37.60, IEC 62271-111

* Other ratings are available upon request.
* ENTEC reserves the right to change the design and specification without notice

Reference project