
ghatikar
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About ghatikar
- Birthday 12/11/1971
Profile Information
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Gender
Male
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Location
ABUJA
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Interests
IoT, EV's and Solar- In general LIFEHACKING
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Skype
anil.ghatikar
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Youda reacted to a post in a topic: simulation software for renewable energy
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I will be also watching the development with interest Although don't have enough time and inclination to write it myself I do have a Modbus energy meter which I would not mind monitoring to separate loads between AC out 1 and AC out 2
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Despite asking repeatedly Victron has not satisfactorily replied to my queries on duty cycle of those contacts. I suspect the 100 Amp is nominal which means they may be rated different for different types of loads https://en.wikipedia.org/wiki/Utilization_categories e.g. For example, the Schneider LC1D18xx contactor is designed to control motors with a nominal current rating of 18 A (AC-3). This contractor is capable of withstanding current peaks (~ 100 A) on starting, such as are typical on inductive machines like motors, without sustaining any damage. It can also control resist
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___ reacted to a post in a topic: Axpert VM III
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It all boils down to price and application. e.g. Nigeria where grid-tied is not really a viable option due to missing grid regulation and infrastructure. They are targeting mission-critical applications primarily like ATMs, digital signage where efficiency is not a real concern. Imagine if you have 70 % saving in deployment cost per ATM !! The other battery-less 5KW inverter is what piques my interest. the biggest advantage is you can use crappy /secondhand battries for applications like airconditioner loads without bothering about AH and C10 Although I suspect even the
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Guys I have a bad news.( and also good news) I contacted MPPSolar who sell the models as retail . the BMS part will not be ready till next year. and the initial release will be only with OEM orders ( where battery and inverter is sold as bundle) But in General PIS - 5048GK - (Voltonics Axpert VM III) 5KW/48VDC, 80A MPPT, max 500V PV open circuit with all the above features except BMS PIP- 3048 MK - ( voltronics King) - Zero changeover time ( PV input 145 V - ONLY 3KW model ) others features same ( no BMS yet) If I look at the graphic of the display I
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___ reacted to a post in a topic: Simple "Lithium" UPS system
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I am using a similar solution for my NAS / router/Network switch for quite a while now except I use a Victron Filax changeover which is fast ( https://www.victronenergy.com/transfer-switches/filax-2) a 20 AH Lifepo4 with cheap Charge controller - https://www.ebay.co.uk/itm/6v-12v-Lead-Acid-3-6v-7-2v-NiMH-6-4v-12-LiFePO4-Li-Ion-solar-charge-controller/292584753349 with a 20 Watt panel and a generally good quality inverter with minimum fan noise - https://www.ebay.co.uk/p/Inverter-Power-Bestek-300w-DC-12v-to-230v-AC-Car-Converter-Electronic-Dual-USB/5017022038 why the wired comb
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pilotfish reacted to a post in a topic: WHICH BMS for my LiFepo4
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Thanks, Guys,. I contacted REC and they Confirmed the 16Q model is fully compatible with Victron over CABUS out of the BOX . The BMS on spec sheet looks wonderful but is rather expensive 400 Euro plus for basic ( software, cables, contactor, adding temp probe etc) take you well north of 900 Euro Maybe I will get one of those cheap Chinese versions, USE the ATC/ATD contacts and keep the battery isolated with sandbags https://www.dhgate.com/product/high-accuracy-battery-management-system-bms/409065600.html#s1-2-7b;searl|3968060313
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Which combination to use with 48 V , 200 AH Lifepo4 cells ( keep in mind battery was less than 3000 Euro) Following options Option 1 - Costliest most reliable Victron Multi 5KVA /48 - with REC BMS ( cost with Contactor, software etc almost 900 Euro) Option 2 - Axpert 5KVA - Coulomb's firmware patched - Which BMS ??? have not found any third party which will work with Axpert yet via serial port Option 3 - use a generic BMS to switch off the battery on extreme low/high voltage with the contractor and use additional BMV 702 relay to switch off Axpert load through
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Use grid tie inveter to tie Lead acid bank to Lithium bank ?
ghatikar replied to ghatikar's topic in Solar Power
GFPR specially tested one like Fronius is expensive and I am sure the Chinese have no product with that. it does disconnect at 51 HZ So my Generator logic of SOC based contractor does that - the GTI only gets connected if the SOC is below 95% . or there is enough load on output ( was 100 watt for 500-watt GTI for 1000 watt GTI I can even set 500-watt minimum load needed before GTI kicks in I agree with the second caveat - but a man can dream to prevent battery voltI have a contactor disconnecting GTI ( SOC above 99 %) plus AC OUT2 disconnects at 57V as a backup. ( c -
ghatikar reacted to a post in a topic: Use grid tie inveter to tie Lead acid bank to Lithium bank ?
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I was wondering if my thinking is correct or I may end up with a big paperweight on my hand. Recently I came across this product - https://www.aliexpress.com/item/1000W-Battery-Discharge-Power-Mode-MPPT-Solar-Grid-Tie-Inverter-with-Limiter-Sensor-DC22-65V-45/32762489820.html It is essentially a 1000W Grid-tie inverter with built-in export current limiter which can work with lead acid battery bank instead of PV panels as DC input I was thinking to use it on the output of 5 KW Quattro with Current limiter CT inserted between Grid-tie and Quattro ( see crude sketch attached)
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ICC version 2.3.0 out now!
ghatikar replied to Centurionsolar's topic in Axpert Control Software - Beta
@watkykjy1 Updated to fresh PI image downloaded from website. The problem still exists but I could nail it down to one reason IN Detail, Downloaded fresh image - checked local emoncms working - did the necessary settings as per my install - NO emoncms posting! Again started from the fresh image - no PI settings changed only changed in ICC - NO EMONCMS posting Again started from fresh - went one setting at a time - every time checking if EMONCMS was working BINGO - it seems for whatever reason enabling BMV on USB tickmark stops EMONCMS posting immediately. - The mo -
ICC version 2.3.0 out now!
ghatikar replied to Centurionsolar's topic in Axpert Control Software - Beta
Rebooted . also cross-checked if the WriteApi was correct. - still no luck Interestingly ICC thread does not show error now but there is no input reported on emoncms both remote ( Centurionsolar) and local host The local was not working for a long time ( i think from 2.6 or 2.7 ) but remote to emoncms.org was working - see screenshot Have sent the password to @Manie -
ICC version 2.3.0 out now!
ghatikar replied to Centurionsolar's topic in Axpert Control Software - Beta
@watkykjy1 Marvellous update. ICC far surpasses other software with the new features few issues though 1. I did the in-app update using update button - Should I be using a fresh image? - what is the recommended path 2. I could not see a button or tab where I can selectively switch off inverters 3. ICC posting is not working to centurionsolar - On the threads tab under EMONCMS 2 - " Error posting data - Error 401" 3. How long the centurionsolarservers keep the data - If more than 6 months then I can just switch off local EmonCMS and post to EMONCMS and centurio -
ghatikar reacted to a post in a topic: ICC version 2.3.0 out now!
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ghatikar reacted to a post in a topic: VE direct usb 2 PI 4 ICC
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Should be ticked. and BMV should say thread running with time indication
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Just to check did you tick the use BMV under battery control? What is the bmv thread saying on the threads info tab
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The meter issue was partially resolved - We narrowed it down to cable or the USB /RS485 converter - The whole USB bus shuts down after power is restored to ET112 . The ET340 does not exhibit same behaviour I will replace the cables with CAT6 ( using telephone cable) over weekend and see if it goes away or alternatively only plug Et112 to a separate venus on PI and check Izak tried alternative drivers etc before concluding it is a hardware issue steps until now -------------- . Both meters are plugged in directly to venus 2. The problem is only with ET11