Underground Single Phase Protection Case Study Solution After evaluation of the requirements, the utility decided on G&W Electric Trident ® single phase, solid dielectric fault interrupters. The compact modular construction permits mounting in a small, shallow vault with easy access for hookstick operation from above ground. A manual operation handle permits resetting of the vacuum interrupter thereby eliminating the cost of fuse replacement and stocking of different fuse types. An electronic control permits a wide range of overcurrent protection curves and can be easily changed in the field if future requirements change. The device is also capable of complete submersion. Challenge The utility is undergoing efforts to increase service reliability and reduce outage time for their cu

Join for free to read