Category 3, 3A999 (a) – Clarification Question
Question: Looking for the membership’s input on understanding 3A999 (a). A frequency changer has a maximum operating frequency of 1167Hz. Its operating frequency is between 0Hz and 1167Hz. Would this unit still be classified under 3A999(a) or not since the maximum is outside of this range? 3A999 a. Frequency changers capable of operating in the […]