Products > Test Equipment

Kunkin KP184 electronic load : "fixing" an manufacturer issue

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patman27:
Alas, my unit's buried deep in storage and will be for some time. That's the best photo I got from when I chose to not turn it on but take it apaaaaht.

Does anyone else have their Kunkin handy?

aristarchus:

Part number : ZOV-10D181K




--- Quote from: Faron on February 06, 2021, 01:34:00 pm ---Hi everyone!

I need your help. The Varistor (marked VDR1 next to the relais and + terminal) blew up. Sadly the face holding the identification is all charred. Can some of you guys have a look into your unit and tell me which type it is? The part-Number (or at least niminal voltage rating) would be awesome.

I just don't want to fly blind and go with a 150/160V type of random rating.

Thank in advance and best greeting!

--- End quote ---

Faron:
You're my hero of the day! Thank you!


--- Quote from: aristarchus on February 08, 2021, 12:34:16 am ---Part number : ZOV-10D181K

--- End quote ---

ArsenioDev:
Weird problem with my load, left it powered up overnight on a test run maxing out at 40W and when I checked it in the morning it had no voltage sense displayed and the display was strobing at around 60hzish on top of the normal illumination. Took a look inside with the FLIR and WOW something went VERY wrong, the ADC was casually just hanging out at 300+ degrees. Probed around the test points and the only one being weird was the -5V rail. Traced it to what appears to be its reg but that is running normal temps but at 5V, not -5V, it's a SOT-23-6 with the label "CA74" but my google-fu found nothing. Spent a few hours trying to figure out why the heck this thing blew it's ADC to no avail, need to have this thing online soonish when I do power stage testing and would rather not have to buy a new one. Any ideas would be appreciated.

PaWill68:
I got new Kunkin software for KP184 (v4 202004) 2021.02 v1.0.13. Previous versions did not connect to my electronic load.
https://disk.yandex.ru/d/5MizUcHimwxMIw

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