G&W Electric’s Viper®-SP solid dielectric, single phase recloser combines the time-proven reliability of electronically controlled, vacuum fault interrupters with the maintenance-free benefits of a solid dielectric insulated device. The Viper®-SP is designed for automatic or manual operation providing overcurrent protection for single phase systems through 38kV maximum, 800A continuous current, and 12.5kA rms symmetrical interrupting. Vertical insulator “L” configurations and horizontal insulator “Z” configurations are available.
Features and Benefits
Reliable Performance - Viper®-SP 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.
Ease of Operation - The Viper®-SP is compatible with the Schweitzer SEL-351RS Kestrel control.
Ease of Installation - The Viper®-SP is lightweight and compact. Site-ready designs provide all accessories including bracket, arresters and voltage transformers.
Power Grid Automation Ready - The Viper®-SP is automation ready, simplifying conversion for any future automation requirements.
Configuration Details
Polemount “L” Bracket
Polemount Horizontal Insulator Bracket
Polemount Complete Site-Ready Assembly
Electrical Ratings Chart for Viper®-SP
| Maximum System Voltage, kV | 15.5 | 27** | 38 |
| Voltage Class, kV | 15 | 25 | 35 |
| BIL, kV | 110 | 125 | 150 |
| Continuous Current, A | 800A* | 800A* | 800 |
| 8 Hr. Overload, @ 20°C | 960 | 960 | 960 |
| 60Hz Withstand, kV rms | |||
| – – – One minute (dry) | 50 | 60 | 70 |
| – – – 10 second (wet) | 45 | 50 | 60 |
| Interrupting Rating, RMS, kA | 12.5 | 12.5 | 12.5 |
| Making Current, RMS, asym, kA | 20 | 20 | 20 |
| Making Current, Peak, asym kA | 32 | 32 | 32 |
| Short Circuit Current, kA sym, 3 sec. | 12.5 | 12.5 | 12.5 |
| Mechanical operations | 10,000 | 10,000 | 10,000 |
| Temperature range | -60°C to +65°C | -60°C to +65°C | -60°C to +65°C |
| * Consult factory for higher continuous current up to 1000A | |||
| ** Can be applied on 29.3kV systems | |||
