Vista^® Underground Distribution Switchgear

Circuit Configurations

Vista Underground Distribution Switchgear can incorporate components including load-interrupter switches, fault interrupters, bus taps, and bus-tie switches. Each such component represents one “way.” A single Vista unit can have up to six ways, in any combination of the above components.

Remote Supervisory and Source-Transfer Vista units can also include internal voltage transformers for control power. In this case, the voltage transformers occupy some of the space normally available for other components. Contact S&C for more information.

A few typical configurations are shown below. The model number indicates the total number of ways, as well as the number of load-interrupter switch and fault-interrupter ways. For example, Model 321 has “3” ways — “2” load-interrupter switch ways and “1” fault-interrupter way, as shown below. Many other configurations are possible.

Manual and Remote Supervisory Models

Source-Transfer Models