Search found 457 matches

by paulvk
Tue, 26 Mar 2024, 07:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

I have experienced glitches Both on wired rs232 and via HLK-RM04 serial to tcp converters) when communicating with the inverters I think it may
be the cpu is interrupted doing higher priority tasks
by paulvk
Mon, 11 Mar 2024, 07:27
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 1075

Re: Weird Overnight Battery Discharge Axpert VM II Hybrid

Flooded batteries need periodic equalization charges for a 48v battery this is 64 volts (the reason for the 64v inverters) so a 24v battery will need 32 volts but this is done maybe once every 2 or 3 months But you first need to know what type of flooded battery you have is it a calcium battery has ...
by paulvk
Tue, 27 Feb 2024, 11:36
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

If the commands for the MPPT board can be known then it would be easy to
program a Nextion display to control it I have programmed the Nextion display
to control the inverters.
by paulvk
Sun, 21 Jan 2024, 19:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: IGBT failure study
Replies: 0
Views: 144

IGBT failure study

It may be that IGBT failure is inevitable but one factor in this article is heat , keeping them as cool as possible may prolong their life
https://www.nrel.gov/pv/assets/pdfs/201 ... 31_das.pdf
by paulvk
Sat, 16 Dec 2023, 16:27
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

With 560Ah you should be ok with charging if you only have 160 amps of mppt I have 15 000 watts of panels and can see my current being over 200 amps today at my other system with 8760 watts of panels I had 116 amps of current from them. I have not noticed my daly shutting off but its not a 2 amp bal...
by paulvk
Sat, 16 Dec 2023, 14:27
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

I have a daly bms with 16s 280ah battery now running for more than 12 months , two 4048ms the bms will do most of the work but you have to know that it will disconnect the battery for over voltage and over current events I still have a 225ah lead acid battery in parallel with the lifep04 battery for...
by paulvk
Sun, 12 Nov 2023, 08:25
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)
Replies: 821
Views: 305541

Re: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)

Charging to 64v is for flooded lead acid it is to gas the battery to stir up the acid and to
de-sulfate them but it is only for a short time so check to see what battery type it is set to.
by paulvk
Tue, 31 Oct 2023, 18:45
Forum: Renewable Energy and Storage (Non-EV)
Topic: JUNCTEK Battery Monitor
Replies: 0
Views: 808

JUNCTEK Battery Monitor

I am working to communicate with these units with AVR using bascom , a Nextion display and an esp8266/esp32 with Arduino so three projects below is a summary of getting the readings and settings and checksum that I have posted in the bascom forum The JUNCTEK KGF140F , KL140F are battery monitors tha...
by paulvk
Fri, 27 Oct 2023, 19:43
Forum: Renewable Energy and Storage (Non-EV)
Topic: Small solar system. Suitable controller?
Replies: 6
Views: 516

Re: Small solar system. Suitable controller?

The other solution to a small system is a BMS with an output to drive a relay
to cut off charging the relay can be inserted in the solar panel circuit so
that it disconnects the panels
by paulvk
Sat, 21 Oct 2023, 08:05
Forum: Renewable Energy and Storage (Non-EV)
Topic: Clone PIP 4048-HS Flickering Panel LEDs
Replies: 19
Views: 1101

Re: Clone PIP 4048-HS Flickering Panel LEDs

The place to buy the capacitors from would be au.element14.com , au.rs-online.com/web/
www.digikey.com.au , au.mouser.com , www.wagneronline.com.au the only places you can have any confidence of quality parts.
by paulvk
Sun, 08 Oct 2023, 07:40
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

My inverters do not always share the load equally I have a 731 load and they are 390 341
while the washing machine is running , inductive loads give the most mismatch.
by paulvk
Wed, 13 Sep 2023, 17:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

The problem of using excess solar is like the MPPT you have to adjust the load to the available excess power not doable with a fixed load like a water heater but you do not want to put switching spikes onto the output of the inverter as this would wear out the MOVs and may even damage the output tra...
by paulvk
Wed, 13 Sep 2023, 08:03
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)
Replies: 821
Views: 305541

Re: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)

I use Albright DC contactors as I have them in my junk box they are made to switch high current DC motor loads For a timer you can get a delay relay from ebay , you can also get DC-DC 48v to 24 , 12 , 5 volts as well handy to run other auxiliary gear off the 48v battery I run my NBN modem and meteri...
by paulvk
Wed, 06 Sep 2023, 08:04
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)
Replies: 821
Views: 305541

Re: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)

Dual lamps often have off set pins on the side eg brake lamps
by paulvk
Wed, 06 Sep 2023, 08:00
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 1549
Views: 333455

Re: PIP inverter repairs and hardware modifications

D50 and D56 are burnt , D50 very cooked.
by paulvk
Wed, 06 Sep 2023, 07:57
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

I have 6 x PIP4048MS 4 in service and two spares most manufactures only think of 5 -7 years for the life of a product
so I made the decision for spares and when nearly 9 years ago the 6 were about the cost of two of the others on the market.
by paulvk
Tue, 05 Sep 2023, 07:59
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)
Replies: 821
Views: 305541

Re: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)

The lamps in vehicles use "small bayonet lamp holder" so two 24v lamps and two lamp holders would do the job with the lamps in series you get 48v and the current would only be a few amps with a push button switch to do the pre-charge which you hold down then release after you operate the m...
by paulvk
Sun, 03 Sep 2023, 08:33
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)
Replies: 821
Views: 305541

Re: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)

Cheap resistors can be found in your car "light bulbs" (as long as its not one with LEDs) a brake light would make a good pre charge
you know when it is ready the light goes out.
by paulvk
Thu, 17 Aug 2023, 08:33
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

Be careful with that dc-dc converter as its not isolated very likely the negative will be negative 48v battery
its much better to use isolated dc-dc converters element 14 has 2 amp 5v ones for AU $21 (convert to your currency)
by paulvk
Wed, 16 Aug 2023, 17:48
Forum: Renewable Energy and Storage (Non-EV)
Topic: Lifepo4 and Lead Acid a working combination
Replies: 9
Views: 330

Re: Lifepo4 and Lead Acid a working combination

The problem with the electrolyte stratifying is part of the recommendation (trojan battery pdf) to charge to 62 volts for flooded cells the other is reducing sulfating. The pulse charging needs to be short bursts it mainly benefits sealed batteries needing to be short enough to not cause gassing. I ...
by paulvk
Mon, 14 Aug 2023, 09:30
Forum: Renewable Energy and Storage (Non-EV)
Topic: Lifepo4 and Lead Acid a working combination
Replies: 9
Views: 330

Re: Lifepo4 and Lead Acid a working combination

To answer :what are my lead acid doing" My inverters are lead acid based in original form with a max of 60 volts which is not enough for flooded lead acid (ok for sealed lead acid) which need 62-64 volts if there is no battery connected the inverters will suffer damage this can occur if the Lif...
by paulvk
Mon, 14 Aug 2023, 09:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: Lifepo4 and Lead Acid a working combination
Replies: 9
Views: 330

Re: Lifepo4 and Lead Acid a working combination

More info on batteries and how I am doing it Flooded lead acid need 62 volts for a proper charge so almost all chargers do not charge them properly sealed lead acid should be kept below 57 volts but benefit from pulse charging to 62 volts . Regular maintenance is a must for lead acid so part of this...
by paulvk
Sun, 13 Aug 2023, 12:09
Forum: Renewable Energy and Storage (Non-EV)
Topic: Lifepo4 and Lead Acid a working combination
Replies: 9
Views: 330

Lifepo4 and Lead Acid a working combination

I have started this topic as most places will say things like "it will stuff your lead acid battery" but have no actual evidence or experience , well I am doing it so I am providing the real evidence. I am running lead acid an Lifepo4 in parallel its working just fine the Lifepo4 handles 9...
by paulvk
Fri, 21 Jul 2023, 07:10
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

That is not all that much different to my two inverter setups. I have had two 700 watt split AC's running , lights , fridges , computer , TV and portable induction unit so in the 4000 watt range I now have 10kW of panels but have had no problems with overheating. You might find this interesting http...
by paulvk
Thu, 20 Jul 2023, 08:25
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 3265
Views: 1277168

Re: PIP-4048MS and PIP-5048MS inverters

I use old merlin gerin , ABB , hager (no longer have DC rating) left overs from previous career , new NoArk who make ones that go to 1000V per contact. Looks can be deceiving with switches contact resistance can increase over time all quality contacts are normally silver plated , high current contin...