Viper®-S Recloser

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G&W Electric’s Viper-S® solid dielectric, three phase recloser combines the time proven reliability of electronically controlled, vacuum fault interrupters with the maintenance benefits of a solid dielectric insulated device. This recloser is designed with a mechanically ganged operator for three phase automatic or manual trip operation providing overcurrent protection for systems rated up to 38kV maximum, 800A continuous, and 12.5kA rms symmetrical interrupting.

Features and Benefits
  • Reliable performance - Viper®-S reclosers utilize G&W Electric's time proven epoxy polymer system to fully encapsulate the vacuum interrupters. This system provides excellent insulation properties while providing fully shielded, void-free construction.

  • Control Flexibility - Viper-S® reclosers are designed to work directly with the popular, field proven SEL-351R control. Other control options are available depending on application and end user requirements.

  • Ease of Installation - The Viper®-S is lightweight and compact. Site-ready designs provide all accessories including bracket, arresters and voltage transformers preassembled prior to shipment significantly reducing installation time.

  • Power Grid Automation Ready - The Viper®-S is automation ready, simplifying conversion for any future automation requirements. Options for adding multi-ratio current transformer for additional applications and requirements.

  • Manual Trip Operation - For manual open and lockout operation, a handle is provided permitting hookstick operation. Pulling the handle down trips and locks out the recloser.

Configuration Details
  • Polemount Center Bracket

  • Polemount Alley-arm Bracket

  • Polemount Complete Site-Ready Assembly

  • Substation Mount Recloser

  • Padmount

Electrical Ratings Chart for Viper®-S
Maximum Design Voltage, kV 15.5 27 38
Impulse level (BIL), kV 110 125 150
Continuous & load break current, A 800 800 800
8-hour Overload, A rms at 20°C 960 960 960
60Hz Withstand, kV rms
– – – One minute (dry) 50 60 70
– – – 10 second (wet) 45 50 60
Radio Influence Voltage, microvolts 100 @ 9.4kV 16.4kV 23kV
Interrupting Current, kA rms sym. 12.5 12.5 12.5
Making Current, kA asym. rms 20 20 20
Making Current, kA asym. peak 32 32 32
Short Circuit Current, kA sym., 3 second 12.5 12.5 12.5
Mechanical endurance, operations 10,000 10,000 10,000
Temperature range -60°C to +65°C -60°C to +65°C -60°C to +65°C
Continuous Current 800A* 800A*
*Consult factory for higher continuous current up to 1000A