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 | |||
