Hama Flush socket with two USB ports

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Official specifications:
I got it from amazon.de dealer Telehomeshopping24

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I got it in a blister pack.

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It contained the socket and a instruction sheet.

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Mains wired are screwed on from the backside.

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The frontplace is clipped on and removing it gives access to the mounting screws, but not anything carrying mains voltage.



Measurements



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It can deliver 2.6A on port #1.

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And also on port #2

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When running both usb ports in parallel the current is still 2.6A, here done at 120VAC

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And at 230VAC.

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Running at rated output for one hour is no problem.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
When mounted in a wall the temperature will depend on how the wall transfer heat.

Temp4000

M1: 60,0C, HS1: 63,6C

Temp4001

M1: 36,4C, HS1: 70,4C
HS1 is the rectifier diode.

Temp4002

HS1: 54,7C

Temp4003

M1: 63,0C, HS1 77,7C
Here HS1 is the transformer.

Temp4004

M1: 32,8C, M2: 35,8C, HS1: 59,6C

10ohm

At 0.5A the noise is 15mV rms and 198mVpp.

5ohm

At 1A the noise is 25mV rms and 268mVpp.

2ohm

At 1A the noise is 22mV rms and 157mVpp.


Tear down

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When the front frame is unclipped it is possible to unscrew more of the front and gain access to the usb connectors and a couple of clips.

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The usb circuit board is only the two connectors and space for coding resistors. These coding resistors are not used, the data pins are shorted on the circuit board for a DCP coding.

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Not much here.

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Unclipping 6 clips and cutting a label made it possible to remvoe the back cover.

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There is both a fuse (F1) and a transient protection (RV1: MOV). Between the two capacitors (EC1 & EC2) is both a inductor (L1) and a ferrite bead (L2). There is also the usual safety capacitor (CY1) and the transformer has flying leads for extra safety distance.

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The safety capacitor has, as usual, lots of approval markings.

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To see this side of the circuit board I had to unsolder the mains socket from the circuit board.
On the other side of the circuit board is the bridge rectifier (DB1), the mains switcher (U1).
There is a single rectifier diode (D2)

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The requirement for safety distance is only 4mm when across a slot in the circuit board, this is easily surpassed here.

Testing with 2830 volt and 4242 volt between mains and low volt side, did not show any safety problems.



Conclusion

The usb output can easily deliver the rated current, it has low noise, coding is acceptable and it looks safe.

This is a fairly good mains socket with usb output.



Notes

Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger
How does a usb charger work?