Applies to single-phase and polyphase dry type transformers (including both autotransformers and noncurrent limiting reactors) for supplying energy to power, heating, and lighting circuits.
NEMA ST 20-2021 History
NEMA ST 20-2021
$61.00 $123.00
NEMA ST 20-2014
$45.00 $90.00
More Standards PDF
JIS K 8659:2014
$42.00 $85.00
JIS A 9501:2014
$145.00 $290.00
JIS B 1189:2014
$47.00 $94.00
JIS B 1003:2014
$27.00 $54.00