Good VS Fake bargains on Aliexpress?

[Obamot]

I'm taking up the idea of ​​a thread launched by Phil59 on Chinese equipment purchase tests, because I'm also interested.

I tested this rescue "wolf"

I used it today, about 30 minutes, without pb, to intervene in my electrical panel, at the entrance to the cellar.

1688898301853.jpg (79.64 KB) Viewed times 1414

1688898689976.jpg (87.43 KB) Viewed times 1414

So, at the beginning of me, generally, between 1 and 4, you have it at 1.79€, small price, small risk.

Well, 60W ..... I would have said at best 5 W, the 60W must be "musical W" or equivalent in lux ....
It is supplied with a piece of usb cord, and the hook ...

2 light intensities, and a "flash" mode.

I haven't tested a full discharge yet...
I opened, and did not see the type of battery inside, it looks like it was cast in resin. In any case not an 18650.

[Obamot]

I have an acquaintance who heats with wood and bought an electric/hydraulic wood splitter whose motor would be, "220 volts three phase".

Problem: it is 220 volts simple.

Who has never complained about not being able to use a three-phase device? Is there a simple solution to connect it and make it work?

On Aliexpress there would be a kind of inverter that would allow it... (tweezers)

Screenshot_2023-07-10-19-30-26-38_3aea4af51f236e4932235fdada7d1643.jpg (460.91 Kio) Consulté 1404 fois

Source: https://m.fr.aliexpress.com/item/100500 ... &_fs_=true

Is this a "false bargain"?
if not, another idea?

[izentrop]

There are no complications to be made, from the three-phase it is easy to deliver single or two-phase.

[Obamot]

There are no complications to be made, from the three-phase it is easy to deliver single or two-phase.

No, it's the opposite, it's from his single-phase domestic network that he wants to start a three-phase motor.

[gfgh64]

er, I'm not sure but if 220v three-phase then it's the same phase all three times so no need for a three-phase meter;
it would therefore suffice to bridge the same phase for all three (because if 220 no need for a different phase, or am I wrong?)

[gfgh64]

and on the photo of the inverter, I'm not sure but
input 3ph 380v

[Ahmed]

No, these are 3 different phases. There are 4 wires on the posts: 3 phases and the bottom wire is the neutral.
It is always possible to "manufacture" three-phase with single-phase, but it is quite expensive regardless of the solution adopted.

[izentrop]

I have an acquaintance who heats with wood and bought an electric/hydraulic wood splitter whose motor would be, "220 volts three phase".

Problem: it is 220 volts simple.

Who has never complained about not being able to use a three-phase device? Is there a simple solution to connect it and make it work?

On Aliexpress there would be a kind of inverter that would allow it... (tweezers)

Screenshot_2023-07-10-19-30-26-38_3aea4af51f236e4932235fdada7d1643.jpgSource: https://m.fr.aliexpress.com/item/100500 ... &_fs_=true

Is this a "false bargain"?
if not, another idea?

The seller has good feedback.

Be careful to choose the right version.


For a 1500 W motor, choose the 2.2 kW version. Normally a splitter does not start under load, you should be fine.

[gegyx]

I had this:

Connecting a 380v three-phase motor to 220v single-phase

Here is the Steinmetz coupling, or, how to connect a 380v three-phase motor to 220V mono.
The principle is simple, it suffices to place a permanent capacitor across the terminals of a stator winding, which will generate a rotating field and will cause the rotation of the motor.
It should be noted that the engine will then lose at least 30% of its power.
Then simply apply the following assembly:

- Three-phase motor connected to 220V.jpg (72.13 KiB) Consulted 1309 times

400VAC capacitor preferable to a 250VAC

[phil59]

I have an acquaintance who heats with wood and bought an electric/hydraulic wood splitter whose motor would be, "220 volts three phase".

Problem: it is 220 volts simple.

Who has never complained about not being able to use a three-phase device? Is there a simple solution to connect it and make it work?

On Aliexpress there would be a kind of inverter that would allow it... (tweezers)

Screenshot_2023-07-10-19-30-26-38_3aea4af51f236e4932235fdada7d1643.jpgSource: https://m.fr.aliexpress.com/item/100500 ... &_fs_=true

Is this a "false bargain"?
if not, another idea?

Wasn't Christophe trying something like this for a pump?