G&W Viper ST 3 Phase Recloser Switchgear
Providing electronic overcurrent protection for single or three phase operation on systems rated through 38kV, 800A continuous current, 12.5kA symmetrical interrupting.
Features
- Reliable performance
- Works directly with SEL-651R control
- Operator safety including mechanical block on trip and lockout handle
- Maintenance free operation
- Overhead, substation and dead-front padmount designs
- "L", "C" and "Z" style options
- Ease of Installation
- Ease of automation
- Internal voltage sensing and current transformers
- Application flexibility
- Various module configurations for circuit connection flexibility
- Smart Grid solutions
- RUS accepted
Operation Options
- DEAD LINE – Unique design of Viper-ST magnetic actuator system provides for local & remote operation if AC power is lost
- OPERATION PRINCIPLE – The Viper-ST recloser monitors the circuit using internal multi-ratio current transformers and voltage sensors. Sequence operations, tripping and overcurrent sensing is an automatic function. Each phase module incorporates a magnetic actuator and drive assembly. Control can be set for three distinct operating modes for maximum application flexibility
- MANUAL TRIP – Operation of the hookstick operable manual trip handle trips and locks out the recloser
Specifications
| Parameter | 15 kV | 25 kV | 35 kV |
|---|---|---|---|
| MAX SYSTEM VOLTAGE (kV) | 15.5 | 27 | 38 |
| BIL (kV) | 110 | 125 | 150 |
| CONTINUOUS CURRENT (A) | 800 | ||
| 8HR. OVERLOAD AT 20°C | 960 | ||
| 60Hz WITHSTAND, kV RMS DRY, 1 MIN | 50 | 60 | 70 |
| 60Hz WITHSTAND, kV RMS WET, 10 SEC | 45 | 50 | 60 |
| INTERRUPTING RATING RMS (kA) | 12.5 | ||
| MAKING CURRENT, RMS, ASYM, kA | 20 | ||
| PEAK, ASYM (kA) | 32 | ||
| SHORT CIRCUIT CURRENT, kA SYM, 3 SEC | 12.5 | ||
| MECHANICAL OPERATIONS | 10K | ||