Products > Test Equipment
Korad KA3005P+ (from welectron)
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twist3r:
Ok, I see now that welectron now has KA3005P+ model, both with 'safety terminals' and 'screw terminals'.

So, I want to go with screw terminals. Since I'm a newbie, and have no clue, can someone tell me this:

welectron also offers me to buy couple different 'measuring' leads, or 'Hirschmann PRUEF 2 Test Probe Pair', 'Hirschmann AK 2 S Alligator Clip Pair', 'Hirschmann KLEPS Clamp-Type Test Probe Pair'.
I'm lost, so... what would you guys suggest me to order as 'extra' to come along with the bench supply? My main goal is to be able to use voltage injection when I try to find a short.
And...I'm not sure if all of these come with 'cable' attached so I can just 'stick it' into the 'screw terminal' or I would have to buy the cables myself. Can someone give me some advice here, plase?

Also, I asked them about calculating Swiss VAT, and they said that they can't do that. They can only ship it without EU VAT, and once the package arrive in Switzerland, my family members would have to pay Swiss VAt + some fee for the service. They sais that price for service should be around 10 euros, but I'm not so sure it would be that 'low'.
nightfire:
As the screw terminal type of power supply does not take insulated cables, you should buy a pair of non-insulated CAT I cables. Also crocodile clips in good quality are always useful, albeit I personally prefer the dolphin type form of other manufacturers...
If you want to inject voltage to devices etc. to find shorts, depending on the possibilities to attach the power supply the KLEPS hooks are not bad.

But: In which situations do you need to inject that amount of voltage with the corresponding currents to find shorts?
In appliance testing, VDE standards mandate a minimum of 200 mA to check a PE for continuity, which usually means a very low voltage...
tooki:

--- Quote from: twist3r on May 23, 2022, 06:05:43 pm ---Ok, I see now that welectron now has KA3005P+ model, both with 'safety terminals' and 'screw terminals'.

--- End quote ---
For what it’s worth, I have the screw terminal version, and I’d much prefer the safety jack version. I basically never use the screw connection, whereas being able to plug in any banana plug, such as multimeter probes, is super useful. (I use adapters to get around this.)
ebastler:

--- Quote from: twist3r on May 23, 2022, 06:05:43 pm ---welectron also offers me to buy couple different 'measuring' leads, or 'Hirschmann PRUEF 2 Test Probe Pair', 'Hirschmann AK 2 S Alligator Clip Pair', 'Hirschmann KLEPS Clamp-Type Test Probe Pair'. I'm lost, so... what would you guys suggest me to order as 'extra' to come along with the bench supply? My main goal is to be able to use voltage injection when I try to find a short.

And...I'm not sure if all of these come with 'cable' attached so I can just 'stick it' into the 'screw terminal' or I would have to buy the cables myself. Can someone give me some advice here, plase?

--- End quote ---

None of the three items you list will include cables, so you need to order those separately. All cables shown in the accessory box seem to come with regular (non-shrouded) plugs, so they will fit your screw terminals. Just choose a length which makes sense on your bench.

Regarding the probe tips and clips: I don't think I have ever used pointed tips with a power supply. Maybe they can be useful for temporary voltage injection, but even in that application I think you would want at least one permanent connection (to have at least one free hand to probe temperatures in whichever way you prefer). For clips, I prefer the "KLEPS" type over the alligator clips, since they tend to hold on tight and can reach into narrow spaces.

Just having seen tooki's reply, I can add that I am in the screw-terminal camp. I use the screw connection often, e.g. for cut-off USB cables or quick jury-rigged leads to a barrel plug or such. And I own hardly any safety banana plugs, since I only use them for extra-low voltage anyway. A matter of personal taste; it's nice that Korad still offers both connection types.

EDIT: Oh, and in a pinch you can unscrew the knurled nuts from the screw terminals and plug in a safety-shrouded plug directly. Although it can't be inserted very deeply, so yes, that's a bit of a kludge.
twist3r:
@nightfire
Can you give me an example (or a link to) of an 'non-insulated CAT I cables' so I can check it out and see how that 'thing' looks like?
Also, what 'dolphin' clips?

As for voltage injection, I plan to use this power supply 'mostly' for voltage injection, but that doesn't mean I wont be using it for something else. (charging the battery, or maybe even giving power to some device that needs higher voltage). I was told that I should get 32v 5A (or 10A) bench power supply, but since I'm noob, most ppl said 30V 5A should be good enough.

Voltage injection would mostly be used on PC or laptop motherboards, or PC graphic cards. Voltage should be 0.8-1.0 v, but current will start small and raise up until I feel the heat (I don't have that heat 'scanner' camera (or whats the proper name for it), so I would test it by 'touch'. :)


@tooki
So, if I understood you, ... if I ever 'need' safety terminals connection I could use some kind of adapters to 'bridge it' from screw to safety terminals? (if 'yes', then can you share the photo of how that adapter looks like or... if you bought it... a link would be great)


@ebastler
For 'tree items that I listed' which you said that don't come with cables, and that I would have to buy them separately.... what would be the length of cables that you would pick. Is 1.5m ok length? Should those cables need to be 'special' or... could I make them on my own by using a 'used' scraped wires?



Ok, so...here is what I'm thinking:

I think I should order:
Hirschmann KLEPS 30 Clamp-Type Test Probe Pair https://www.welectron.com/Hirschmann-KLEPS-30-Clamp-Type-Test-Probe-Pair-Red-Black

One thing that I'm thinking about (but at the same time is confusing me is)...I asked the guys from welectron the same question that I asked here: 'what would they suggest me to buy along with this bench power supply' and their answer was: "We would recommend you Hirschmann MLN test leads and probes such as PRUEF 2:"

Now... for PRUEF 2 (https://www.welectron.com/Hirschmann-PRUEF-2-Test-Probe-Pair-Red-Black) I ...understand (I think). I would have to get my own wires and connect it with these (I guess its called) 'pointed' probes.

But...I don't understand why they suggested me 'Hirschmann MLN test leads' because... the picture shows that they are like 'banana plugs' for like multimeter or for...'safety terminals' version. https://www.welectron.com/Hirschmann-MLN-150-25-RS-Measuring-Lead-25mm-150m-Pair-Red-Black

So... any comments regarding these leads that gives me headache?

Thanks in advance guys!
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