Dear group, The 3-2 standard defines professional equipment as equipment not intended for sale to the general public. I have a product that is not intended for the general public but is intended to be connected to a low voltage distribution system. It is approximately 300 watts and utilizes multiple DIN rail mounted power supplies. Each individual power supply meets the intended specification but when all four power supplies are utilized if fails the intended specification. As previously mentioned this device will never be sold to the general public and is currently being used in automotive world. This is a measurement device that is categorized as measurement equipment so the goal is to meet the requirements of IEC61326-1. Now with that said clause 7.2 of the 61326-1 states that for Class A equipment (which this is) the limits, the measuring methods and provisions given in CISPR 11 apply. For Class B equipment, the limits, the measuring methods and provisions given in CISPR 11, IEC 61000-3-2 (or IEC 61000-3-12) and IEC61000-3-3 (or IEC 61000-3-11) apply. So my interpretation of this standard, since I have a Class A device is that no harmonics and flicker are required. Is this correct?
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