Jeremy B said
If the input voltage exceeds 10 VAC above the output level setting the relay will click to make the adjustment.
What adjustment is being made when the relay clicks?
Hi Elk,
The Buck / Boost feature provides an extra “Boost” in country’s that have lower than 240 VAC supply and a a reduction “Buck” in those country’s that have higher than 240 VAC.
The click is an internal relay that enables / disables a special coil in the secondary of the P10’s transformer when the unit senses the power input is greater than 10 volts difference between the input and output voltage supply.
Each P10 is configured for either Buck or Boost based on it’s country of destination.
Jeremy, thanks for your reply. Are you saying it is possible therefore that I might set the output voltage initially to be within 10V of input voltage but that if the input voltage rises so that it exceeds 10v higher than the output voltage an internal relay will be activated to cope with that greater than 10V difference? If so, that would account for me hearing relays clicking in and out through the day. My input voltage does vary through the day as can be seen from the attached typical log.
Nick
HI Fourlegs,
Thanks for posting the Performance image.
You have it right, your input voltage is pretty high so it is likely that the Buck / Boost feature is in play.
Try reducing the difference between the input and output voltage and listening to see if the relay click is no longer there.
If you continue to have any trouble please reach out to us at service@psaudio.com.
Thank you for your additional reply. I have tried to reduce the difference between the input and output voltages so that they are within 10V. However the P10 will not allow me to select an output voltage greater than 240V. As you can see from my posted typical voltage log, the daily input voltage regularly varies between 243V and 253V. This is within EU/UK spec of 230V +10% -6%. So with an output voltage limited to 240V I am still doomed to get the regular clicking throughout the day.
Now that I know what it is I am fine with that but just to put this one completely to bed, can you please confirm that regular (ie many times a day) implementation of the Buck / Boost feature does not harm the P10 in any way or lessen its life?
Perhaps more importantly, I see in the detailed spec for the P10 that the Over Voltage Limit is - “Continuous 5% of setting”. So with a max output voltage setting of 240V the maximum allowable continuous (ie greater than 15 seconds) input voltage is 252V. I have checked some of my other daily logs and I sometimes get 253V input for several hours at a time. This is completely within UK voltage spec but conflicts with and is over the P10 allowable continuous input voltage. Is this likely to do any harm to the P10 at all?
I have had the output voltage set on maximum (240v) all today and the number of internal clicks has drastically reduced which all fits in with the idea that it was the Buck / Boost relay activating.
I can now settle down and enjoy all the advantages of the P10. The more I use it the more I realise what a clever piece of kit it is.
I like to understand my kit and sometimes there is a bit more to stuff than is in the manuals. This was a case in point and hopefully the dialogue here will enable other users to understand their P10 a bit more and use it to it’s strengths.