Source-Transfer Vista® Underground Distribution Switchgear
Introduction
S&C Source-Transfer Vista Underground Distribution Switchgear provides fully automatic primary-selective service and fault protection for one, two, or three critical load circuits. It incorporates the same outstanding features as Manual Vista UDS, plus the S&C Micro-AT™ Source-Transfer Control, motor operators and three-phase voltage sensing on source ways, and internal power provided by voltage transformers. It’s available in common-bus and split-bus configurations.
Furnished in ratings through 38 kV, Source-Transfer Vista Underground Distribution Switchgear includes these outstanding features:
- Micro-AT Source-Transfer Control. Transfers on loss of source, voltage unbalance, or any source-side open-phase condition. It’s easy to set up . . . all settings are keypad-programmable, calibration is automatic. Optional overcurrent-lockout feature prevents automatic transfer operation that would close a source load-interrupter switch into a fault. Optional communications card lets you rapidly upload event log to your PC, download standard settings.
- Motor operators on load-interrupter switch ways provide switching between the sources. Also provide operation of bus-tie switch in split-bus gear.
- Standard three-phase voltage sensing for each source. Three-phase current sensing provided too when optional overcurrent-lockout feature is specified.
- Self-powered by means of voltage transformers.
- Exceptionally rugged construction and the industry’s finest finish provide extraordinary resistance to the elements, keep high-voltage components securely isolated from unauthorized access.
- Available in all mounting styles — pad-mounted, undercover, and vault-mounted.