Author Topic: High DC rated AC voltage sensor  (Read 861 times)

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Offline endevor100Topic starter

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High DC rated AC voltage sensor
« on: June 16, 2017, 04:40:48 am »
I need some suggestions for a voltage sensor. I would like to monitor the AC ripple on the DC bus of some industrial VFDs. The DC bus voltage is normally around 600V but can get as high as 900V depending on what the motors are doing. I'd like to be able the AC ripple on the bus down to 1V RMS. Because of the high DC voltage it seems the sensor would have to be rated for at least 1kV and it would certainly make the powers at be happier if it carried a UL or similar safety rating. There are several motor control cabinets spread around the facility so ideally I would like to have a sensor in each cabinet sending their readings over a hard wire (ethernet, RS-485, or whatever) to a central data logging computer. Anyone have any ideas or suggestions?
 


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