Sorry Bob, I guess I should of given more of an introduction to the post. A lot of audiophiles are using isolation xfrms for powering their system. My intent of the post is to let the members know how to check the xfmrs for the correct, wired, proper polarity orientation.
Up until today I personally have not used any power conditioners or isolation xfmrs for my equipment. Always just plugged into the wall recepts. Just tonight I am now running the 2KVA xfrm wired 240V primary/ 60V-0V-60V balance secondary, 120V, with my Arcam Alpha 9 CDP connected to it. Sound, pretty good.
And that was the main point of my thread. For those who may be using an isolation xfmr, or xfrms, for their equipment. Imo it is important that they have all the AC polarities the same. Just as the Ac polarity of the audio equipment power supply transformer primary winding, have the same polarity orientation.
Just so I could give you an accurate response to your proposal of using a connected load, a 25 to 40 watt light bulb for the test I did so. I used a lamp with a three way bulb. 50 watts being the lowest.
Primary 246V
Secondary wired balanced 60V-0V-60V (120V nominal)
actual reading with load connected 124.9V
With the center tap lifted from ground:
X4 to ground measured 31.V
X1 to ground measured 145V
X4 being the lowest reading of the two readings will connect to the neutral silver color screw on the receptacle and X1 will connect the hot conductor screw, brass color. Center tap bonded to earth ground.
By the way Bob even with a load connected to the xfmr the cheap Sears Multimeter gave 0 readings for the test. I even turned the lamp to the highest wattage, 150W. The meter would only register the secondary line to line voltage as well as the line to center tap reading. Apparently the digital meter must be of a fairly high resistance, like the Fluke, to do the test. Your thoughts.
Jim
Up until today I personally have not used any power conditioners or isolation xfmrs for my equipment. Always just plugged into the wall recepts. Just tonight I am now running the 2KVA xfrm wired 240V primary/ 60V-0V-60V balance secondary, 120V, with my Arcam Alpha 9 CDP connected to it. Sound, pretty good.
And that was the main point of my thread. For those who may be using an isolation xfmr, or xfrms, for their equipment. Imo it is important that they have all the AC polarities the same. Just as the Ac polarity of the audio equipment power supply transformer primary winding, have the same polarity orientation.
Just so I could give you an accurate response to your proposal of using a connected load, a 25 to 40 watt light bulb for the test I did so. I used a lamp with a three way bulb. 50 watts being the lowest.
Primary 246V
Secondary wired balanced 60V-0V-60V (120V nominal)
actual reading with load connected 124.9V
With the center tap lifted from ground:
X4 to ground measured 31.V
X1 to ground measured 145V
X4 being the lowest reading of the two readings will connect to the neutral silver color screw on the receptacle and X1 will connect the hot conductor screw, brass color. Center tap bonded to earth ground.
By the way Bob even with a load connected to the xfmr the cheap Sears Multimeter gave 0 readings for the test. I even turned the lamp to the highest wattage, 150W. The meter would only register the secondary line to line voltage as well as the line to center tap reading. Apparently the digital meter must be of a fairly high resistance, like the Fluke, to do the test. Your thoughts.
Jim