G&W 1-2-3 Junction Bars & Cabinets

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Junction Bars & Cabinets

Provides an extremely compact, versatile solution for loop, tap, grounding, testing or sectionalizing applications through 35kV, 900A. Padmount, vault and subsurface designs are available.

Features and Benefits

Customizing Capability – G&W Electric specializes in custom solutions to meet the ever changing needs of it’s customers. Contact your G&W Electric representative with specific application requirements

Application Versatility – G&W Electric epox junction bars accommodate up to 6 point configurations with any combination of 200A, 630A or 900A interfaces for either load break or dead break elbows. The junctions can eliminate or minimize the requirement for stacking 200A taps on 600A or 900A 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 Electric 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 Electric junction bars are designed and tested to applicable sections of IEEE 386 standards. Production tests include X-ray, corona and AC withstand

Electrical Ratings Chart for Junction Bars

Max. Voltage, kV	15	25	35
BIL Impulse, kV	95	125	150
Continuous Current, A	900	900	900
Corona Extinction, kV	11	19	26

Ratings Chart for GNI Switches

Voltage Class, (kV)	15kV	25kV	35 kV
Maximum design voltage (kV)	15.5kV	27kV	38kV
BIL Impulse (kV)	110kV	125kV	150kV
1 Min Withstand AC (kV)	35kV	60kV	70kV
1 Min Withstand Production test rating AC (kV)	34kV	40kV	50kV
15 Min Withstand DC (kV)	53kV	78kV	103kV
Continuous and load break current (A)*	630 amps	630 amps	630 amps
Momentary Current (kA) asym	40kA asym	40kA asym	40kA asym
Fault-Close 3-times (kA) asym	40kA asym	40kA asym	40kA asym
1 Sec Current (kA) sym	25kA asym	25kA asym	25kA asym
Mechanical Operations	2000	2000	2000
Symmetrical interrupting ratings (kA)**	25	25	25
*900A continuous available
**12.5kA and 20kA available