FHF F3B

[orestis]

I am still looking for such a person!

[Kompressor]

.....sorry, but I do understand only railway station....

Can anybody tell me the core of the problem because I know Funke & Huster for a long time. In former times I saw these models on Hanover Exhibition in Germany.

[orestis]

Hi Kompressor

The problem does not concern the siren, but the connection way, because there is no 3phase current available. I have to look for the suitable capacitor...

[Gast]

This siren has only 600W (or have i read false?)

You should look on eBay for a Frequency-Transformer that can be supplied with one phase (avaiable till 2200W).

So you have a funny toy, cause you can set the speed of the siren and the acceleration of the rotor...

But the only way to reach the original sound is "real" RC...

But why you have no RC?

Is it in Greek not also the standart, that a house is supplied with 3P + PE N?

I think you have RC in your house and you don't know it.

For example, a electric stove works always with RC.

Also heavy Waterpumps and continuous-flow water heaters work with RC...

You should ask a electrican for this problem, then you are also able to run your .

3x16A should be enough when you use a C-Fuse (they tollerate the very high accelerating-current of induction-engines and are built for this engines...)

PS: Nikola Tesla would rotate in his oak-domicile if he would know what you do with his invention (the RC)...

[orestis]

Haha, @DerPapst I like your Tesla photo!


It's true, in the majority of greek houses 3phase current is available at the central fuses switchboard.

Although, people who live in block of flats do not have 3phase supply in a plug they can use.

The only way to use 3phase current is to modify the switchboard and take out a line with 380V. Whitch means breaking down wall parts!

Concerning the stove I can't check it or make use of possibly 380 V it works with, because it' s built in ...

Therefore, OK, I can connect my F3B properly, using the correct capacitor. But with my I see no solution for now.

Thanks for helping,
Orestis

[Wolfi]

Hi Orestis !

Congrats for your F3B! Yes - it seems to be brand new!
The startup is indeed very slow, I think too slow, and
I assume your capacitor is too low in capacity.

Please, can you tell me what kind of capacitor
(microfarads / rated voltage / capacitor type)
you have used, and in which connection ?

Best regards,
Wolfi

[orestis]

Hi Wolfi!

Here is a pic whith the capacitor's data http://greeksirens.googlepages.com/capacitor.gif

And here's the connection (black cable with blue - brown)
http://greeksirens.googlepages.com/capacitorcon.gif

[Wolfi]

Hi Orestis,

thanks for the pics! They will answer all my questions.

Wiring is good, delta connection for 230 VAC, and
voltage, type and connection of capacitor is also OK.

But, as I have assumed, capacity is not enough. Your
siren has 0,6 kW, and - like shown in Niklas`schematic -
capacity for operating capacitor must be at least
60 to 80 µF per kW, this means 36 to 48 µF in your case.

Do you have more of these capacitors? Try two, better
three in parallel, and I think your siren will run up faster.

Use only MP capacitors of at least 400 VAC in rated voltage.
Never use electrolytic capacitors in AC circuits, because
they always are polarized.

A very nice siren, indeed! How much does it weigh?

Best regards,
Wolfi

[orestis]

@ Wolfi thanks for the tips!

So you think I must use three capacitors or only one instead with 36 to 48 µF ?

Can you define " parallel" connection of the capacitors? How can I connect them exactly?

A very nice siren, indeed! How much does it weigh?

aprox. 22 kg! Much lighter than Elektror S3, because it is alouminium made (the stator and the motor base). When I first hold it I was surprised as I was expecting it to be very heavy!

[Wolfi]

Hello Orestis,

the best would be using a single 36 to 48 µF capacitor
instead of your 16 µF type, same connection, if available.

Otherwise, you can increase capacitance by connecting
more capacitors in parallel. Parallel, that`s the opposite
of series connection. All capacitors are connected in common
to the same terminals (same voltage).

C (total) = C1 + C2 + C3 + ...

A very good siren of medium size! Not so big and heavy
like an , but with enough power for outdoor alarming.
Congratulations !

Best greetings,
Wolfi

[orestis]

Wolfi!

I' ll try it !

[orestis]

Much better whith a 45 μF capacitor!

http://rapidshare.com/files/35206786/fhf-f3b_2.avi

[HP.D]

The long winddown is awesome

[Wolfi]

Hi Orestis !

Very good ... the sound and especially the runout is like
a big air raid siren, the bearing of your F3B must be excellent !

Here you can see easily, that a three phase motor due to the
fact that it is brushless can run freewheel much more easier
than a DC or AC commutator motor.

The startup capacitance (45 µF) is not yet perfectly, but
sufficient and much more better than your first choice with
16 µF.

Congrats for your excellent siren. You have bought it
by Ebay from Germany?

Best greetings,
Wolfi

[orestis]

Concerning the winddown: I think the siren didn't want to stop running! 5 minutes lasted the winddown and keep in mind that it didn't reach full rpms!

@Wolfi, how interesting that the new bearings and the brushless motor can cause such a long winddown... I wonder how long it takes to an Elektror S3...