Industrial notes

Transformers for Boulder Dam. — Four additional large power transformers have recently been purchased from the Westinghouse Electric & Mfg. Co. for the Boulder Dam Power Project. They will supply power to the Metropolitan Water District of Southern California and are rated 55,000 kva each, single phase, 60 cycles, water cooled for stepping up from 16,500 volts to 230,000 volts. These transformers will take power from generator units No. 5 and No. 6, stepping it up to 230,000 volts, at which voltage it will be transmitted to the aqueduct pumping plants of the Metropolitan Water District of Southern California, a distance of approximately 237 miles. After installation, the transformers will be operated with the neutrals of the high voltage windings solidly grounded, but they are designed so that the neutrals can have a current limiting reactor installed later if it is so desired. Total weight of each transformer after installation will be approximately 125 tons.