G&W Electric Co.

United States

G&W offers a variety of distribution switches for 15.5 through 38kV overhead systems. Switches are available for either direct pole or crossarm mounting, and can be operated manually or through various remote control, distribution automation or automatic transfer control packages. Various styles are available depending upon system rating requirements. G&W Diamondback Solid Dielectric switch benefits: Field-proven Solid Dielectric Technology Six Integral Voltage Sensors & Three Current Transformers Compact, Light-weight Maintenance-free Smart Grid Ready DNP3.0, IEC-101 and IEC-104 communication protocols G&W Overhead SF6 distribution switch benefits: An economical alternative with superior performance. Totally sealed contact systems eliminating environmental corrosion and icing concerns. Significant increase in load break performance especially important in automation schemes where the number of switching operations typically increases. Longer service life Minimal maintenance Ease of automation

G&W offers a wide variety of distribution cable terminations through 35kV. Cable terminations are supplied with high grade, wet process porcelain insulators for superior electrical performance, tracking resistance and mechanical strength. Field assembled designs offer interchangeable aerial lugs, hoodnut connector assemblies, porcelains, bodies and cable entrance fittings to accept any construction of extruded dielectric, paper insulated or armored cable. A variety of pre-assembled designs offer built-in stress relief and insulation permitting ease of installation and adaptability to a wide range of cable types and sizes.

Utilities have been looking to improve performance metrics as a means to meet regulations since the late 1990s. One of the most reliable ways to do so is to quickly determine the location of faults, isolate them, and automatically restore the healthy feeders promptly. G&W Electric has been installing Fault Detection, Isolation and Restoration (FDIR) systems for many years. Shorter outage durations Fewer sustained outages Improved performance indices Enhanced operational efficiencies Improved service quality G&W’s Lazer automation systems can isolate faults with the closest upstream device to allow the fewest number of circuits to see the outage. Our pre-configured solutions allow you a choice of fully distributed intelligence and peer-to-peer communications, local controllers built directly into the switches, or a combination of both. This flexibility coupled with standard communication interfaces and open protocols offer solutions that can meet almost any automation need including smart grid applications. Like all of our solutions, FDIR systems are fully tested at our facility before ever being shipped.

• Max. Voltage, kV15

G&W junction bars provide an extremely compact, versatile solution for loop, tap, grounding, testing or sectionalizing applications through 35kV, 630A. Padmount, vault and subsurface designs are available. Features: Customizing Capability – G&W specializes in custom solutions to meet the ever changing needs of it’s customers. Contact your G&W representative with specific application requirements. Application Versatility – G&W EPOX junction bars accommodate up to 6 point configurations with any combination of 200A or 630A interfaces for either load break or dead break elbows. The junctions can eliminate or minimize the requirement for stacking 200A taps on 600A elbows and provide an ideal solution for confined space installations. The flexible design permits integrating interface points for grounding or testing the circuit while minimizing the movement of cables. Junction points can also be used for arrester locations. Rugged construction using EPOX technology – G&W junction bars utilize time-proven EPOX technology to assure a void-free, extremely durable system imperious to environmental contamination. The rugged epoxy interfaces minimize the breaking force required for removing separable connectors compared to rubber-to-rubber junctions. The epoxy system provides excellent mechanical and electrical properties, excellent fracture toughness, and outstanding thermal endurance. A permanently bonded, external semi-conducting coating provides a fully shielded, dead front system. Copper buswork provides maximum conductivity. Silicone bronze studs assure high strength connection points. Mounting Flexibility – An optional stainless steel mounting bracket with tilt feature helps facilitate the most ideal mounting configuration where cable training is a concern. Parking stands are available and can be rotated to match a vertical or horizontal configuration. A retaining plate with “U” straps is available for padmount enclosure installations. Tested Reliability – G&W junction bars are designed and tested to applicable sections of IEEE 386 standards. Production tests include X-ray, corona and AC withstand.