I need to find out what ANSI C37.90a is AND what
SAMA standard PMC 33.1 - 1978 is. Any help would be greatly appreciated. This is in a bid spec.

 

ANSI C37.90a: SURGE WITHSTAND CAPABILITY SWC)TEST REDESIGNATED AS IEEE C37.90.1

SAMA PMC 33.1: ELECTROMAGNETIC SUSCEPTIBILITY OF PROCESS CONTROL

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http://global.ihs.com/index.cfm?cus..._id=%'X3.K 0 &country_code=US&lang_code=ENGL