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Components Testers: LCR Meter | Function generators | Programmable DC Electronic Load > Digital load DC / AC
Mini Review of ZHIYU ZPB30A1 110W DC Load 0-30V at ITTSB Blog
Kiriakos GR:
Intro: Constant Current Electronic Load ZPB30A1 this is a special cost effective product originally designed for industrial use.
ZHIYU (brand / maker) designed this Load for the application of cost effective multiple testing of all sort of chargers at production facilities.
The idea this is multiple ZPB30A1 to be used in testing cabinets and be used for Aging tests of chargers ( phone chargers, USB chargers or other).
Second application this is battery evaluation and capacity measurements.
In both cases and because test results are of high importance, ZPB30A1 Load this it does maintain operating settings, operating condition, and collected measurements even after power failure, and as soon Mains power this restored, ZPB30A1 continue the job until scheduled operation this gets completed.
First ZPB30A1 this designed about two years ago at 60W, according to my estimation within 2017, old customers of ZHIYU they request something more powerful and this generating less heat at long in duration tests.
New ZHIYU ZPB30A1 V2.8 110W 0-30V this is now looking truly interesting even for ITTSB Blog, this serving as testing gear in my workbench.
ZHIYU this is simply one location in China, so far I was not able to locate any website of this small maker.
Either way, this load at 110W with improved firmware among with heat-sink and better fan, this is very promising to handle real work.
For a price of no more than 25 Euro this is able to be used as substitute of by far more expensive programmable electronic DC loads, in the price range of 300 Euro or about there.
Additionally any one whom own a good quality multimeter with data-logging he can use this among with ZPB30A1 and create battery discharge curves of high precision.
Upcoming Mini Review of ZHIYU ZPB30A1 V2.8 110W This is going to be an exploration of my at discovering true potentials and electrical specifications.
Most to all Asian sellers they continue to mention 0-30V 0-10A but such are not real specifications of 110W model. ;)
Kiriakos GR:
I did a great find 8) some one from Latin America he did a chart of 60W Electronic Load ZPB30A1 V2.6 and he record Ampere output per its volts setting.
I am going to do the same for this 110W product version, and this comparison will be of great interest for many people. ;)
According to 60W Electronic Load ZPB30A1 V2.6 electrical accuracy specifications are:
Maximum capacity test error :
At 0.5A = 2.5%
At 2A = 1.5%
At 5A and above = 1.2%
Voltage measurement error :
1% + - 0.02V
Changes Log for 110W :
New Delta high speed dual bearing fan
Higher cooling redundancy
More suitable for long hours !
I am professional electrician, I have the awareness that a better performing DC fan, this change it does also changing DC power supply requirements for the new 110W circuitry.
ZHIYU maker always advice PSU for 60W PCB circuit this to be at 0.5A of greater.
An higher performing DC fan will require higher energy consumption.
Therefore and possibly, for 110W model, required power supply this would be 1A as minimum requirement.
Best power supply for stable operation of ZPB30A1 in all conditions of operation, this is something that I am going to explore too.
According to DELTA DC fan website, AFB 50x50x20 series comes in four versions at 12V DC:
RPM ---------- Consumption in Ampere
4000 = 0.06
4800 = 0.07
5600 = 0.10
6400 = 0.14
7400= 0.16
Inrush current this is triple at start up.
Therefore just for correct operation of DC fan, 0.5 A this is required for the fan alone.
Kiriakos GR:
Here I am starting to explore LED display components.
Three digits LED this is SP420361N 1534 0.56 inch
Four digits LED this is SR420361N 1549
http://www.arkled.net/
The all idea, this is if I can find compatible with a larger dimensions this to be replaced.
Kiriakos GR:
While arrival of my load PCB this can take several days, I am feeling allot of enthusiasm about this project !
In my planning this is to create one high quality enclosure for this PCB, and professional grade cables and connectors for it.
For example I just discovered one pair of Kelvin type clips designed for battery Lead Acid, this usable for very small ( 7Ah ) up to larger ones.
And interestingly enough front jaws design, are flat and look good even for LCR use and even components testing.
With such clips at hand, I will make one foolproof set of cables, this will use 4 wires connectivity, and will be 100% safe regarding short circuit accidents.
http://www.ebay.com/sch/m.html?_odkw=&_ssn=mxqtech&item=301697783899&_osacat=0&ssPageName=STRK%3AMEBIDX%3AIT&_from=R40&_trksid=p2046732.m570.l1313.TR0.TRC0.H0.TRS0&_nkw=100A+Crocodile+Alligator&_sacat=0
I liked them that much and got three pairs. 8)
Speaking of output connections :
No rule forbids having in your enclosure in parallel connections of both.
Banana binding post ( 2 x 20A & 2 x 5A female (voltage sense) ) among with 4Pin Male & Female Panel Chassis ( for battery type Kelvin clips )
Kiriakos GR:
ZHIYU ZPB30A1 while this is original developer of 60W and 110W and proof this is that they are capable of firmware developing.
Some one from a near by village in China acted as copycat at 60W model, and now this copied product gets marketed as TX6880DH.
I am professional electrician and I have no faith to any copycat design, especially speaking of electrical specifications.
ZPB30A1 product design comes with relaxed electrical specifications speaking of accuracy, and I do laugh when hobbyists trying to verify accuracy by using all sort of trash digital voltmeters 5$ worth at eBay, or by them using multimeter of 20$ retail.
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