1988IEEE C57.12.10-1988 Transformers - 230 kV and Below 833/958 Through 8333/10 417 kVA@ Single-Phase@ and 750/862 Through 60 000/ 80 000/100 000 kVA@ Three-Phase Without Load Tap Changing; and 3750/ 4687 Through 60 000/ 80 000/100 000 kVA with Load Tap Changing - Safety Require
1977IEEE C57.12.10-1977 REQUIREMENTS FOR TRANSFORMERS 230 000 VOLTS AND BELOW 833/958 THROUGH 8333/10 417 KVA@ SINGLE-PHASE@ AND 750/ 862 THROUGH 60 000/ 80 000/100 000 KVA@ THREE-PHASE; ERRATA - APRIL 1978@ SUPPLEMENT C57.12.10A - MAY 1978
1958IEEE C57.12.10-1958 American Standard Requirements@ Terminology@ and Test Code for Distribution@ Power@ and Regulating Transformers@ and Reactors Other Than Current-Limiting Reactors