G&W's Viper-ST solid dielectric, triple option recloser combines the time proven reliability of electronically controlled, vacuum fault interrupters with the maintenance-free benefits of a solid dielectric insulated device. The triple option feature offers ultimate user flexibility by permitting three distinct mechanical operation modes, either 1-phase trip / 1-phase lockout, 1-phase trip / 3-phase lockout or 3-phase trip / 3-phase lockout. The Viper -ST provides overcurrent protection for systems through 38kV maximum, 800A continuous current and 12.5kA symmetrical interrupting with 16kA symmetrical interrupting up to 27kV.
Introducing Accusense™ Voltage Sensors:
Preassembly of all auxiliary equipment significantly reduces recloser preparation time for product installation in the field. Includes potential transformers or voltage transformers, arresters, aerial lugs, terminal/junction boxes, wildlife protectors and all associated wiring. Control cables are connectorized on both ends and cut to length for a cleaner installation. User
identification markers can be preapplied to each unit prior to shipment further reducing installation time.
This configuration is ideal for overhead applications where all three phase conductors are on the same side of the pole or for congested installations with minimal phase spacing.
For applications where space is limited at the substation or where underground feeders require protection, Viper-ST solid dielectric reclosers can provide an ideal solution using a dead-front padmount design. In this configuration, the cable connections can be provided with either a standard IEEE 600A apparatus or 200A deepwell interface for elbow connectors. Separate compartments are provided for accessing the cables and operators. Controls can be mounted directly to the recloser frame or within a separate adjacent enclosure.
The Viper-ST works directly with the popular Schweitzer SEL-651R control. Typical features of the SEL-651R include:
A twist lock style connector makes the cable connection between the control and the interrupter control box. AC power provides the normal supply power to the control.
The following options can be supplied: