FED STD
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FED-STD-74A (NOTICE 1), FEDERAL STANDARD: TRANSFORMER, POWER, DISTRIBUTION (67000 VOLTS AND BELOW, 501 THROUGH 10,000 KVA, 3 PHASE, 501 THROUGH 5,000 KVA, 1 PHASE) (15 MAR 1983) [S/S BY ANSI-C57.12.00, ANSI-C57.12.10, ANSI-C57.12.80 & ANSI-C57.12