Greetings, We manufacturer a small line of vacuum pumps that use very small (1/16 hp) 12, 6 and 4 VDC motors. Just a DC motor and a pump. We have had some EMC testing performed to the EN 55014 and EN 55104 standards where there was some high conducted emissions that required a .1 uf capacitor across the positive and negative terminals. But I believe this is more of an issue of the power supply source, and lead lengths than the motor.
These items are considered components because they need a power supply to operate. However, they could use battery power, but I assume that there would not be an emission problem in this mode. We now have another source for motors, and I have been asked to retest. I am very reluctant to spend thousands of dollars on testing, when I personally do not understand the benefit or risk. Of course the test house highly recommends additional testing. So I come seeking some advice or alternatives. Here are some of my thoughts: Since this is a component, could we just assign a declaration of incorporation? Are there any reasonable limits to what should be tested, as far as power/frequency/application in the directives? Is there a justifiable reason to test this product? Thank you for your consideration, any thoughts would be appreciated. Ray Russell ray_russ...@gastmfg.com
