Uber, I plan on having the breaker inspected and replaced. I've had multiple trips in succession.
Thanks.
Thanks.
Equi=Core Hum & Other Issues
I’ve owned a Core Power Tech Equi=Core 1800 for 6 months. Recently the transformer has started to hum inside the chassis. It happens when components are on and also when sources are powered down. The transformer hum is intermittent. It ranges from multiple times per day to 3 or 4 days without any hum. I never had DC on my dedicated lines before, so I picked up a Klein Tools AC/DC tester... https://www.kleintools.com/catalog/electrical-testers/electronic-acdc-voltage-tester-12-240v-ac-15-2...
and when plugged into wall receptacles it indicated overload. Line voltage is steady at 122VAC and always has been.
What am I doing wrong, and how should I test for DC on the power line?
I discovered another problem when testing the Equi=Core duplex receptacles; they indicate inverted polarity. All house outlets measure correct polarity.
I’m looking for some assistance in diagnosing this hum. I’m not sure if it’s due to DC offset or if the torroid itself is vibrating in its mounting.
I know this is becoming a long thread, but I must mention that the Equi=Core now trips the breaker at the panel when powered on. It trips several times in a row, eventually allowing power-up. This is a 20A dedicated line from a subpanel which I’ve had for years.
Any advice is much appreciated.
and when plugged into wall receptacles it indicated overload. Line voltage is steady at 122VAC and always has been.
What am I doing wrong, and how should I test for DC on the power line?
I discovered another problem when testing the Equi=Core duplex receptacles; they indicate inverted polarity. All house outlets measure correct polarity.
I’m looking for some assistance in diagnosing this hum. I’m not sure if it’s due to DC offset or if the torroid itself is vibrating in its mounting.
I know this is becoming a long thread, but I must mention that the Equi=Core now trips the breaker at the panel when powered on. It trips several times in a row, eventually allowing power-up. This is a 20A dedicated line from a subpanel which I’ve had for years.
Any advice is much appreciated.
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- 107 posts total
DC blockers are cheap to buy and build. One can be put inside your conditioner as I have done in my BPT Balanced isolation tranny. It quieted my BPT Conditioner and my Clayton Audio amp’s transformer. No need to spend many hundreds for the Deep Core to solve a DC issue. I populated this board and wired it inside the unit. The board has inputs from your IEC and outputs to your tranny. You can even buy several finished options: https://www.atlhifi.com/shop/assembled-pcbs/fully-populated-dc-blocker-pcb/ Even tiny, tiny amounts of DC can cause the tranny to buzz like crazy and it does change throughout the day in intensity. That is normal. Replace your breaker and get a dc blocker installed. |
Uber, I plan on having the breaker inspected and replaced. I've had multiple trips in succession. I'm no expert but I do know there are two quality levels of circuit breaker. There is a "home" version and a higher quality version. Ask your electrician for the best breaker. The price may be a little more but since they are overall pretty inexpensive, it's not a place to save money. They may insist the lower priced unit is adequate for your home but this is not a circuit to run a .......hairdryer. ;-) |
lowrider57 OP3,542 posts@lowrider57, I assumed the 20 amp breaker is just a standard type breaker. It’s NOT a GFCI, or an AFCI, or an AFCI/GFCI combination type breaker.... Correct? Overloading a 20A circuit? I guess I should have ask you to be more specific on how quick, fast, after you would reset the breaker and then move the breaker handle to the ON position the breaker tripped. Immediately? Or after a short interval of time? I was thinking immediately when you would move the breaker handle to the ON position. Please clarify.... If the breaker trips immediately that would indicate a very high inrush current or a ground fault or short circuit, condition, event. In either case, event, the current could be well over 100 amps or more. Just a guess by you repeatedly resetting the breaker it temporarily clears the ground fault or short circuit. Can that happen? Yeah, if the fault is not a Bolted Fault. I get the impression you do not leave the Equi Core powered on 24/7. I noticed the unit enclosure looks sealed, there in no air vents to convection cool the power transformer. Have you ever added up all the connected loads plugged into the unit? How hot does the top cover of the unit get? Question. Has the 15 amp circuit breaker on the Equi Core ever tripped? Here is a closeup photo of the inside of the unit. Can’t get any simpler... Just an IEC inlet connector, on/off switch, 15 amp magnetic circuit breaker, power transformer, electrical wiring, and 4 duplex receptacles. At least that’s all I see. Scroll down the page to the photo of the inside of the unit. https://forum.polkaudio.com/discussion/186921/core-power-technologies-equi-core-1800-review Last but not least we have been blaming the Equi Core unit for the cause for tripping the 20 amp breaker in the electrical panel. Did you ever remove the Equi Core unit from the wall outlet and feed your audio equipment directly from the wall outlet the way you used to? I would suggest you try that. That should rule out the problem is caused by the branch circuit wiring or the branch circuit breaker. Of course you don’t know at this point, how weak the breaker is now..... You still should try it.... Jim . |
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