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ralph

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ralph last won the day on August 20 2017

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  1. Your suggestion was correct. Switching the unit off and changing prog 28 to SIG allowed me thereafter to change prog 4 to energy saving mode. Many thanks for your help with this.
  2. Thx for the reply.. will investigate..... No, units are not paralelled. I took a unit out the box, applied 48Volt with my bench PSU, connected nothing else, switched on and couldnt change the setting. I then tried a second unit out the box and couldnt change the setting. Both units have the paralelling board installed though.....
  3. I have two axpert 5Kva units. Both behave the same. I wish to enable the "power saving mode" (setting #4). If one enters setting mode, scroll down to setting 4, press enter, display flashes "SdS", pressing the up/down arrows beeps but does not change setting to "SEN". Does anyone else have this problem? Is there a solution?
  4. One more thought - the RCT's are quite cheap, if you have a mission critical application - you could have an extra unit just in case.
  5. I have had a pair of 5Kva RCT inverters running a lodge in northern Botswana for 3.5 Years now and they were subjected to 0.75Kw electric pumps, 1.5Kw chop saws, angle grinders and even a complete dead short on the output on one occasion and survived. However, no argument that the build quality on Victron is the best I have seen and the accuracy of their voltage set points is unparalelled.Victron is extremely robust when subjected to unfriendly loads. Their Mppts provide the highest solar production of any product ive seen, and a whole lot better than the built --in MPPT on the RCT. My questio
  6. HI Sorry, my bad for using wrong terminology. The victron multi I'm looking at drives the (large torroid) transformers with HF PWM sine wave at low voltage. The HF designs I was referring to are similar in so far as HF pwm but no large torroids/ large copper transformers involved, for eg RCT/ voltronics type units. Ref my comments on efficiency, I refer to the Victron info below. https://www.victronenergy.com/upload/documents/Output-rating-operating-temperature-and-efficiency.pdf This indicates 86% efficiency for a multi 3K at close to full load. I shall assume similar stats fo
  7. Do you know where one can find any circuit diagrams or tech info on the victron stuff? Seems like theres nothing out there.I must say the victron stuff is impressive in terms of build quality and resilience Ive installed a number of larger quattro's in the field 10 and 15Kva models and they are very resilient to abusive loads. However they are not so efficient in terms of DC conversion losses (round 80%) in my large off grid solar systems (no fault of thiers, just the limitation of LF transfromers) - I am beginning to think of using HF inverters again for the inverter part of my offgrid s
  8. Recently was asked to look at a faulty Victron multiplus 3Kva 48V inverter. The symptom was that on switching inverter switch on, when unit attempts to start inverter (with or without load attached) unit emits load buzz noise, then only the overload led comes on and there is no output. Problem turned out to be one of the two torroid transformers 220V winding was internally shorted. The torroids consist of a 220V winding and two presumably 48V windings which are simply run in paralell. Interestingly there are 2 x torroid transformers in the Victron units and each torroid has separate "H" b
  9. I want to set a victron ccgx to user level instead of user& installer. when I follow menu items 'general - access level - and then select 'user', when i press enter key I am prompted to enter password. I didn’t put a password, the dealer that sold it to me says he didint put password. Is password required to change from user& installer to "user"? If password is not known, what to do? I dont see anything in the victron manual about this situation.
  10. HI I recently installed an SMA sunny Tripower 25Kw 3 phase GT inverter with SMA energy meter and SMA sunny home manager there are 15Kw of panels attached- however the readings below were taken during my experiments with only 5Kw of panels attached. I configured the export limitation settings on the home manager and the inverter per the SMA 'official" youtube webinars for '0W' of export. I have strange readings on my 'el cheapo' amp clamp meter. The above readings for utility make no sense when the GT inverter is operating. I conclude the slight differences in readings betwe
  11. I also have a 15kw 3 phase SMA GT installation at the office with a SMA energy meter limiter. I note that it takes about 3 seconds to react.
  12. I opened up the top cover on my infini today to track down the burning smell. It seems to come from the upper left choke. I put a computer fan on top of the unit running permanently and this appears to have cooled the choke off and the smell has gone away. I wonder why that choke is heating up.
  13. Im in Botswana. The metres here are made by Hexing and they carry the SDS logo. They dont trip out if you reverse feed them, they just bill you for exported power.
  14. good news. My infini 3Kw plus with SDM630 meter is working well and limiting power to the grid as it should be! The magic in my case was unchecking (taking away the tick) on the 'export to grid' setting in grid tie with backup II mode and also running a new piece of signal cable away from any power cables between the inverter and the meter situated 30 metres from inverter. All my other settings are as per infini , Modbus card and SDM630 documentation. When I used a piece of signal cable that was running in same conduit as my power cables the infini wasnt getting any comms from the SD
  15. Wetkit... I also have an infini 3kw plus. I have the SDM630 modbus meter. My smart meter doesnt trip, however my infini is not limiting exported power and is exporting all excess power to the grid. Did you manage to get yours to limit export to zero?
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