Vista^® Underground Distribution Switchgear

Introduction

The answer to your difficult-to-solve switching and protection problems through 38 kV, Vista Underground Distribution Switchgear features 600-ampere load-interrupter switches and resettable fault interrupters — all elbow-connected and enclosed in a hermetically sealed, SF₆-insulated tank.

Innovative features simplify operations, enhance safety, and minimize outage duration. Routine operating tasks can be performed quickly by a single person without the need for cable handling or exposure to medium voltage.

Both manual and power-operated models are available for pad-mounted, vault, and subsurface applications. A wide variety of circuit configurations and options can be furnished too.

• Integral visible break and ground position on load switches and fault interrupters eliminates the need to move, park, and ground cables.
• Optional voltage indication and low-voltage phasing feature located in operating compartment further reduces exposure to medium-voltage cables.
• Innovative UnderCover™ Style puts the gear underground, out of sight — yet allows all routine operations to be performed from ground level . . . outside the pit and away from energized cables.
• S&C’s proprietary gas-sealing designs offer a new level of gas-tight performance.
• Flexible, programmable overcurrent control allows optimal coordination with upstream and downstream devices.
• Certified arc resistant per IEC 60298 Annex AA for fault currents up to 12.5 kA symmetrical for 15 cycles . . . adds another level of safety for operating personnel.
• Significant improvements in power reliability can be achieved using three-pole fault interrupters to sectionalize 600-ampere loops and feeders.