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Risks

Risky Business, Hidden Problems with Metal-Clad Circuit-Breaker Switchgear



Product Overview

green pad-mounted underground distribution switchgear

Vista Underground Distribution Switchgear

Vista switchgear solves difficult switching and protection challenges and improves reliability using SF6 insulating gas. Built with the user in mind, it only takes one person to operate and includes other features designed for operator safety, such as highly visible gaps.

Vista Green Unit

Vista Green Underground Distribution Switchgear

Vista Green switchgear provides the same features and design and reliability benefits of Vista switchgear without the SF6 gas. This alternative instead uses a hermetically sealed green gas blend that reduces its global warming potential by 97% compared to SF6 switchgear.

 Zero emissions solid dielectric pad, live front switchgear, zero emissions, solid dielectric, vault mounted

Vista SD Underground Distribution Switchgear

Vista SD switchgear is another eco-friendly option that uses solid-dielectric material instead of an insulating gas. With its highly visible breaks, flexible design, and front-facing terminations, this switchgear is particularly advantageous in vault applications and higher altitudes.

Construction & Design

Explore the construction and key features of this product using the 3D product viewer below. For instructions on how to use the viewer, click the Help button next to the black question mark icon.

Why Go Green?

Vista Green switchgear helps C&I companies meet corporate sustainability goals while including all the operational and design benefits of Vista switchgear. Vista Green switchgear uses a hermetically sealed and eco-friendly CO2 mix, along with vacuum interrupters. When factoring in the total greenhouse gas emissions produced during the lifecycle of the product, Vista Green switchgear has a 97% lower global warming potential than SF6 switchgear.

*3M and Novec are trademarks of 3M Company.

Design & Cost Savings

Vista, Vista Green, and Vista SD switchgear are built to eliminate reliability risks and deliver significant cost savings.

Indoor or Outdoor

Indoor or Outdoor

Requires no additional housing, saving you money and giving you maximum flexibility.

Submersible

Submersible

Can withstand flooding and extreme weather, mitigating damage and replacements.

Compact Design

Compact

Ideal for tight spaces and to maximize valuable real estate for other uses.

Arc Resistant

Arc Resistant

Certified arc-resistant for safe operation and maintenance without high premiums.*

red leaf icon, vista, Green Insulation Technology

Green Insulation Technology

Green insulation material helps meet corporate sustainability goals.**

*Applies to Vista and Vista Green switchgear only.
**Applies to Vista Green and Vista SD switchgear only.

Guidebooks

Are you exploring different options to improve your facility’s reliability? Weighing the pros and cons of various switchgear solutions can be challenging, but we are here to help. The guidebook below includes information about alternative system designs and switchgear options that can enhance C&I system reliability.

Improving C&I System Reliability Guidebook

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Reliability & Restoration

Distributed System Design

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Rapid Fault Restoration

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Features

Zero Emissions

Green Insulation Technology

Uses an insulation technology with drastically reduced global-warming potential.**

Easy Access and Operation

Secure Access & Easy Operation

Access and operate unit without cable-handling* or high-voltage exposure.

Dust, Corrosion and Leak-Proof

Dust, Corrosion & Leak-Proof

Prevent leaking, rusting, or contamination with sealed design.

Visible Open Gap

Visible Open Gap

Easily confirm closed, open, and grounded* positions through large viewing windows.

Aesthetic Improvement

Aesthetic Improvement

Compact, low-profile design is a fraction the size of metal-clad switchgear.

Low Maintenance

Low Maintenance

Minimal mechanical maintenance required after installation.

Cable-Free Grounding

Cable-Free Grounding

Ground medium-voltage cables using a standard internal ground switch.*

Overcurrent Control

Overcurrent Control

Superior coordination, flexibility, and reliability with a user-friendly control.

Highly Configurable

Highly Configurable

Multiple configuration options to meet specific application requirements.

Manual or Automatic

Manual or Automatic

Choose automatic, manual, or remote operational capabilities.

Greater Load Capacity

Greater Load Capacity

Up to six switch and fault interrupter “ways” per unit.

Multiple Installation Styles

Multiple Installation Styles

Pad-mounted, vault-mounted, single-way wind-turbine*, heavy-duty, or UndercoverTM style* units available.

*Applies to Vista and Vista Green switchgear only.
**Applies to Vista Green and Vista SD switchgear only.

Case Studies

C&I customer successes achieved using Vista, Vista Green, or Vista SD switchgear.

Industrial Facility

A 30% smaller footprint and bigger operational cost savings.

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Data Center

Automatic system restoration and a 35%-45% system cost reduction.

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University

Safe and reliable power distribution and reduced operating costs.

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Product Details

Vista OCC

Vista, Vista Green, and Vista SD switchgear are furnished with fault-interrupter ways includes a unique microprocessor-based overcurrent control that detects faults and initiates operation of the resettable fault interrupters. Program the control in the shop or in the field using your personal computer via an easily connected USB port. The control offers exceptional flexibility and reliability, and it includes features unavailable in other manufacturers’ devices—or only available at substantial extra cost:

  • Five families of curves: Standard “E,” “K,” and “T” speed curves are supported plus special customizable “coordinating-speed” tap and main curves.
  • Superior coordination with upstream protective devices and downstream power fuses: Coordinating-speed curves provide optimal coordination on underground distribution systems.
  • Custom curve attributes: Coordinating-speed curves can be easily modified to include two separate definite-time delays.
  • Separate phase and ground curves are standard: This enables better coordination with source-side breaker trip settings. Negative sequence and sensitive earth fault protection settings are also provided.
  • No extra “wake-up” time: If a fault-interrupter way is closed into a fault, the fault interrupter will trip and clear the fault per the selected TCC, with no additional delay.
  • Self-powered: Current transformers on fault-interrupter ways provide sensing and power. No batteries or battery maintenance is needed.
  • Simple and straightforward programming and access to status information: All programming software is stored in the control. Programming is completed via a browser-based user interface.
  • Event log: The log captures information on the last 64 events captured by the control.
  • Diagnostic information: Data is available to assess the status of the control.
  • Optional external trip provisions for additional functionality: Input from external sources such as transformer sudden-pressure relays can also trip the fault interrupters.

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