- ???????, ???????, Ukraine
- US $10.00
- Jan 29th
You are bidding Wattmeter three-phase cos-Phi D 510 vintage Soviet Union 1958Is 100% original, please look at the pictures, make sure that you are happy with the description and condition before bidding. I am always ready to answer questions and provide more photos on request. D510 phase meter is designed to measure three-phase power factor (cos ?) in the three-phase alternating current at a nominal frequency of 50 Hz with a symmetrical load phase voltage and symmetrical.