ZXD2400 modification guild 3Kw 0-60V 0-50A

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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby jefferso » 10 Aug 2022, 09:45

Burgerman wrote:20A is fine. I do a little more. MK say 23A is ok for GRP24.


Interesting, is that 23A for each battery? so could I go up to 46A for the pair? I have the PL8 I've been using set to 40A, but it rarely goes above 23A unless they're very empty.

Burgerman wrote:CHARGE voltage 28.2V maximum at 20C (and a little less if its warmer than that). Say 28.00.


It's going to be 35°C or so in the UK for the next few days so I'll set it lower. It goes down near 20°C at night when I charge but the flat stays warmer from the day's heat.

Burgerman wrote:Then it needs setting to terminate this CV stage at the point where the battery current stops falling by 0.1A over 1 hour. This usually means that you will need to set 0,3A AND 27.0V on the "float" screen.

The float voltage needs to be around 13.5V (27.0V) and it should fall to this level when, as above the current drops automatically to 0.3A.


Thanks. My 24/12V converter for my ventilator constantly draws about 0.15 amps. Should I set that value a bit higher because of that? to like 0.4A?
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby biscuit » 10 Aug 2022, 09:56

Beta models are undergoing debug trials . Wait and see

I'd be interested at the right price. I like the CV timeout option.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 10 Aug 2022, 10:07

Interesting, is that 23A for each battery? so could I go up to 46A for the pair? I have the PL8 I've been using set to 40A, but it rarely goes above 23A unless they're very empty.


No. When in series as every cell in a single battery already is, or every cell in a set of 2 or 3 or 4 series connected batteries are all get exactly the same current through them. So no its 23A max, if you have 1 battery or 2, 3 or 4 in series.

IF you were to connect these batteries in PARALLEL then you would have 12V and the Ah, as well as the charge Amps, would all be double.

2x 12V batts in series is 24V and 70Ah approx.
2x 12V batts in parallel is 12V and 140Ah approx.


At 35C I would choose around 13.95V x 2 for a series connected pair. While its so hot. Remember that the battery is frequently a few degrees warmer than your room afyer use, or as it charges. So 27.90v.

Add the current your devive draws, to the termination point of .3A.
To check this is correct, be sure to watch and see that the charge voltage has dropped from the 27.9 down to that 27V point. It SHOULD do so after 8 to 12 hours. If it is not doing this, set that termination point where it goes to float, a little higher. You are aiming for an 8 to 12 hour switch to float level.

It MAY initially keep kicking back in, and "pulsing" back up to the 29.9V level. For a few hours. Maybe longer. Thats OK. You need to watch what it does on the first couple of charges. Once its behaving properly then you dont need to watch any longer. When it gets below 23C approx in your room go back to 28.2V.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 12 Aug 2022, 00:49

cheers
Ripple noise levels of this machine .
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 12 Aug 2022, 01:31

And 220,000 hours mean time before failure. Or 25 years plus, on time...
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Gnomatic » 13 Aug 2022, 21:10

Of the beta units, I like this one .....
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 19 Aug 2022, 06:39

steves1977uk wrote:Here's the translated manual link again... https://translate.google.com/translate? ... zxd2400%2F :thumbup: Steve
According to page 39 of this thread . cheers drunk2

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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 12 May 2023, 11:48

shirley_hkg wrote:
OK. The next generation is out for trial. New features :
-Large screen
-Compensation for volt drop on cables (4 wires mode)
-Modes Selection - Power Supply , Charger , 3 Stage Charger.
-Polarity protection in charger mode
-Bluetooth connectivity allows firmware update and App


Latest update. The 4th generation is in market now. Price is up by £15, with SB50 & XT90. Display is Chinese for the time being , (BT updatable 2024).
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Gnomatic » 15 May 2023, 17:16

shirley_hkg wrote:
shirley_hkg wrote:
OK. The next generation is out for trial. New features :
-Large screen
-Compensation for volt drop on cables (4 wires mode)
-Modes Selection - Power Supply , Charger , 3 Stage Charger.
-Polarity protection in charger mode
-Bluetooth connectivity allows firmware update and App


Latest update. The 4th generation is in market now. Price is up by £15, with SB50 & XT90. Display is Chinese for the time being , (BT updatable 2024).


I see the XT90 on the back but can't see any SB50.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby ex-Gooserider » 16 May 2023, 00:37

Any option to upgrade one of the earlier units?

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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 16 May 2023, 04:06

Gnomatic wrote:

Price is up by £15, with SB50 & XT90.


I see the XT90 on the back but can't see any SB50.


You will be the first one to add an Anderson SB50 as well. cheers
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 16 May 2023, 04:26

ex-Gooserider wrote:Any option to upgrade one of the earlier units?
ex-Gooserider


I sent back mine to upgrade actually.

Just swap 2 non polarized capacitors .

You need new control board, of course. $40
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 16 May 2023, 04:45


Extra gadgets,
Large screen 3.2"
Nicely arranged connection board. cheers
Anything you thought about. :dance
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 17 May 2023, 10:13


Normal shipping is resuming.
3 ZXD and 3 PL8 with accessories of total weight 20kg were dropped off at DHL shop last Friday evening.
They are now on the bench of member at California, 4 pm Tuesday local time.
20kg @$130.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby steves1977uk » 22 May 2023, 09:57

Just wondering if it's safe to leave the ZXD2400 on overnight as my family are worried about it catching fire since it's made in China. I keep trying to explain the mobility chargers are more of a fire hazard than the ZXD.

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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 22 May 2023, 10:17

I leave mine on all the time. They are well made - not everything is badly made in china. And in the UK we have fuses in the plugs. And its all metal. Whats the worst that could happen anyway? A flash and a bang. And a small puff of smoke.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 22 May 2023, 10:18

I leave mine on all the time. They are well made - not everything is badly made in china. And in the UK we have fuses in the plugs. And its all metal. Whats the worst that could happen anyway? A flash and a bang. And a small puff of smoke.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby ex-Gooserider » 23 May 2023, 00:26

steves1977uk wrote:Just wondering if it's safe to leave the ZXD2400 on overnight as my family are worried about it catching fire since it's made in China. I keep trying to explain the mobility chargers are more of a fire hazard than the ZXD.

Steve

It is worth pointing out that all the heavy power handling electronics in the ZXD is made to TELEPHONE COMPANY standards, albeit Chinese TELCO... The only thing that is not telco is the control electronics which are all low voltage / low power.

The core electronics are manufactured for use as the power supplies used as chargers for the battery banks in cell towers, and as such need to meet Telco reliability standards, which specify 'five nines' reliability, or up and functioning 99.999% of the time... This translates to about 30 minutes of 'down time' per YEAR maximum.... A ZXD charger is arguably the most robustly built piece of electrical gear in your entire house... The only other sorts of electronics with this sort of reliability specs are 'life critical' things where people DIE if it breaks...

That said, one still shouldn't be 'stupid' - follow the same sorts of thing you should with any sort of electrical stuff, don't put it on overly flammable surfaces, don't block fans, and so on...

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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 28 May 2023, 14:40


I have had my first 4th generation ZXD .

Firstly, it is much much quieter. Fan noise is unnoticed arm's length away.
Adjustment is 0.01
BT connectivity
4 lines load drop compensation

Developer replied that Lenny's suggestion to add trigger_to _float timer will be added next year, so do English menu.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby ICEUK » 28 May 2023, 20:03

Hi what's the price on these zx PSU now with sb50 connector and delivery to UK?
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 28 May 2023, 21:13

On that original case theres no space for one. You would need a XT90 to anderson on a short fly lead.
And it wont be in english for a year.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby shirley_hkg » 29 May 2023, 04:25

Burgerman wrote: And it wont be in english for a year.

Agreed .
No rush at the moment, unless you happen to need one urgently .


ICEUK wrote:Hi what's the price on these zx PSU now with sb50 connector and delivery to UK?

Will change it to aluminum outfit, with Anderson SB50 added, if shipped by shirley_hkg . :clap :clap
Price is more or less the same as I can ship it in China now.
Much cheaper & faster.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Gnomatic » 29 Jun 2023, 16:58

I charged a couple out of chair gel bats in parallel and set psu to 14.1v and 10a. I keep trying to set my psu as a chair charger, 28.2V and 8A. The psu seems to take it, but then falls back to 14v and 10A on screen. I roll the knob and 27.8v and 8a flshes like its set that way. But I let go and it falls back to 14.1v ect. Am I forgetting something, does my psu need reset??? banghead
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 29 Jun 2023, 18:36

Its tricky but you can set it and it sticks if you do it right! I know, not helpful but I dont know what you are doing wrong.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Gnomatic » 29 Jun 2023, 21:41

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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 29 Jun 2023, 22:03

If I do what you just did mine responds exactly the same. But thats not how you change the voltage for good. Dont ask me how you DO do that, because without it here to play with myself I cant remember!
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 29 Jun 2023, 22:10

OK just had my ZXD passed to me on my bed!
Do as you did in the vid, choose your voltage, when it stops dimming then TURN the knob left... Now its set to your new settings and also stays whenever you power it up.

Mine was set to 20V and now set to 22V. Also was set to 40A and now set to 50A. Took seconds.

Dig your green nails...
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Gnomatic » 29 Jun 2023, 22:33

LOL those are my sisters.
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Burgerman » 29 Jun 2023, 22:44

Did she do as I say above?
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Re: ZXD2400 modification guild 3Kw 0-60V 0-50A

Postby Gnomatic » 29 Jun 2023, 23:14

What's different about what's in the vid?
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