ORD-20 20 Ampere universal booster

RocNet(RaspberryPi), mergCBUS and LocoNet based hardware developed by Peter Giling. (GCA)
Documentation: http://wiki.rocrail.net/doku.php?id=english#hardware
Order information: http://wiki.rocrail.net/doku.php?id=gca:gca-index-en/

ORD-20 20 Ampere universal booster

Postby phg » 01.07.2015, 18:44

To all G-trackers.

Need a good and cheap 20 Amp Booster?
Follow this link:
http://wiki.rocrail.net/doku.php?id=ord-20-en

A continious test with load of 20 Amp by 24 Volt dc supply was very good.
With 480 Watts, there is some heat but nothing one or two very small fans will not solve.

And all that on a board of 140 x 75 mm!
With fans added size will be 140 x 90 mm.
Best regards, herzliche Grüße, chaleureuses salutations, saludo cordial, migliori saluti, hjärtliga hälsningar, hartelijke groet,

Peter Giling (Rocrail - LNet(GCAxxx) - Fiddle Yard control GCA145 - CBUS (CAN-GCx)- RocNet (Raspberry Pi GCA-PIxx)
phg
 

Re: ORD-20 20 Ampere universal booster

Postby eroncelli » 02.07.2015, 20:12

And what about a short-circuit ?
You'll burn everything: 20 Amps are not a wise solution (only a cheap one)
HO Maerklin, CS2+MS2, PC with Win10, Android phone, electronics by IEK, decoder by Maerklin-ESU-TAMS
".. and let your dog enjoy Rocrail"
eroncelli
 

Re: ORD-20 20 Ampere universal booster

Postby Pirat-Kapitan » 02.07.2015, 20:47

Hi eroncelli,
You do not know anything about G-track railroading, do You?
The need for 20A is discussed in the German part very clearly, please look there.
Short-circuit handling at 15A or 20A is solved by many manufactors e.g. Zimo, Heller, Massoth. So why should Peter not be able to handle this too?

I use 20A too and I burned nothing.

Best regards
Johannes
Clearasilfahrer auf Spur G, Lenz LZV (3.6), ORD-20, Manhart-Funki und WLM, RS-Bus Rückmelder (Reedkontakte),
Rocrail auf RasPi ("raspiRoc") mit mobilen Geräten (andRoc). Details auf http://wiki.rocrail.net/doku.php?id=use ... at-kapitan.
Pirat-Kapitan
 

Re: ORD-20 20 Ampere universal booster

Postby phg » 03.07.2015, 11:03

Hi Eroncelli,

Like the previous message from Pirate Captain already explained, 20 Amp is a MUST for good G-track use.
I can assure you that, regardless what everybody is thinking, it will not weld the train to the rail in case of short circuit. (sorry Rob, I tried it, but it did not work!)
The main issue here is the used wires.
The booster itself will shut down very quickly on a short circuit, no harm will be done, but that is only correct when the correct wires are used.
It will harm a lot, if the wiring between booster and rails is not adequate.
In my experiments now, it proofed that I need AT LEAST 6 mm2 wire to get a good respond on short circuit, which fits perfectly the official data for current and wires.
This goes totally against the way many 'official' modelrailroad factories handle this.
They seem to have no problem to connect rails to 3 amp booster and 3 amp booster to a 3 amp transformer, using 0,14 mm2 wires.
Also many modeltrain shops do not seem to have a problem with that.
Look at the amount of 0,14 mm wire they have in stock! Ask there for 0,5 mm and they might give you a look like : does that even exist????
Now, if we talk about stupid situations, that is is sure a stupid and dangerous one!
Based on 3 Amp., a wire there should be at least 0,5 mm2, to be at the safe side.

The 20 Amp Booster is only guaranteed when MINIMAL 6 mm2 wire is used, and for the longer wires even more that that.
With that wire, there is no problem, I tested that over and over.

If you want a proof, just show up on the round table meeting the end of this month in Speyer, and you will see for yourself.!
Best regards, herzliche Grüße, chaleureuses salutations, saludo cordial, migliori saluti, hjärtliga hälsningar, hartelijke groet,

Peter Giling (Rocrail - LNet(GCAxxx) - Fiddle Yard control GCA145 - CBUS (CAN-GCx)- RocNet (Raspberry Pi GCA-PIxx)
phg
 


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