viperVIP:

Also, I need a Low Voltage Disconnect module with up to 50a rating, can I get locally?

viperVIP:
Please do anyone know the service center of Must Inverters in Lagos please?

I need a Must PV18-1012 VPM repaired.
Also, I need a Low Voltage Disconnect module with up to 50a rating, can I get locally?

NiyiOmoIyunade:
Consider what it means to interrupt 50a of DC current - the contacts must be beefy and huge.

You can find 'battery sensing relays' such as XHM6** series on AliExpress.

What you want to do instead is setup Battery > XHM6** > DC Relay/Contactor and then use the main contacts of that DC Relay/Contactor to interrupt the inverter AC Out. So really you are looking for the XHM6** to detect the battery voltage state and the DC Relay/Contactor to (dis)connect the AC supply to the loads.

In practice you need to consider battery voltage hyteresis and recovery points and also what happens if mains becomes available (ideally want to override the battery voltage based cutoff in the presence of mains or Gen)

NiyiOmoIyunade:
My Oga TrippleDots! I hail una o
ba mi, I greet

1. I guess the Fronius is on the AC input side of the Victron Multi/Quattro? Please confirm
confirmed

What PV related assistants are you running on the Multi/Quattro to manage energy flow.
By PV assistant you mean that small package that is started on VE.config/Pv inverter tab right? the settings are just total installed pv capacity and installed pv inverter capacity then assistant is sent to the device

Are you using the default frequency shift thresholds or more aggressive/conservative ones.
default

2. If the actual loads are within 10kw per phase where you have 15kva inverters you should look to your wiring on the load side - the most frequent cause of the generic 'overload' light flashing is actually faulty wiring.
i really hope it is faulty wiring, because this happens on not less than 3 installations

You are looking for all neutral wires for the inverter loads properly moved to an isolated inverter load bus/DB and all neutral wires for non inverter loads moved to the mains DB. Any crisscross of neutrals between mains and inverter side causes these kinds of issues.
yeah, this would have been a probable cause. But the entire premises is purely run on inverter. Mains is sent directly to Acin1 on the quattro multis

If you are pressed for time or want the easy way out, move the inverter supply to AC out 2 and set a suitable assistant to run ACOut2 off battery and prevent overloads.
ok. erstwhile, I haven't played with Ac out 2. New terrain for me

See sample assistant setup below - the red circled (de)activates AC Out from battery based on battery voltage - you could also use SoC or other parameter

The blue circled abi na rectangled protects the inverter from an overload situation e.g in the case below for my house disconnect AC out 2 if loads higher than 9,500 watts for 60 seconds and reconnect or activate AC out 2 if loads under 9,500watts for 200 seconds.
Quite informative. But this overload sometimes happens at no load situation like in the night. Note that the installations are commercial ones hence almost all load goes off after COB yet I get overload over the night before daylight

Two things are important here -
1. The assistant logic is inverse so that START means STOP since the control is OPEN RELAY TO START.....

2. The backoff time for the AC contactor is tres importante - Victron backend dev strongly discourages the relay cycling rapidly ON/OFF several times a minute - it would stick shut and need visit to service center hence I give a mandatory 3 minutes (200 seconds) rest and cool off period if ever the inverter overloads and a 60 seconds of sustained high load before the inverter trips the AC out to allow large transients to pass with no trouble.
smart...noted

NiyiOmoIyunade:
For that second question, I have made the assumption that all issues like phase rotation e.t.c were already sorted since you said things mostly work.

To quickly find a 'common/crossed neutrals' issue I usually employ a test lamp. With mains available, switch off the inverter AC input breaker so that all supply to inverter loads is coming from battery.

With inverter AC input breaker switched off, apply test lamp between inverter AC out live and mains neutral. If the test lamp lights up then you have an inverter load whose neutral is still on the mains DB. Drop wires off the mains neutral bus until you isolate the offending neutral and relocate it to inverter side - there may be more than one neutral wire causing this problem.

Now repeat the test in reverse - disconnect AC input to inverter and apply test lamp between mains live and inverter neutral bus - if the test lamp lights up, there are mains loads whose neutrals are on the inverter side. For this case decide where the loads really should be and handle appropriately.

This test needs an incandescent bulb, a clear schedule for the day and plenty of patience to do in a complex miswiring situation. If you can get the electrician who (mis)wired the building to attend that would be very good too - they usually know all the shortcuts they took and (mis)wiring they did to cause all these problems, just be nice and kind to them during the process and things should typically work out well.

kiekie1:


Haha Tripple. Been pretty engaged offline lately. Regards

earthrealm:


u get what you pay for, they may perform well for the first yr or 2...and then experience a shape decline in performance.
pony up the extra dough and get quality panels.

panels, battery are the 2 things a wise prudent renewable energy person shudnt scrimp on-----as you end up paying heavily for it.

yingli or original suntech should be the least panel, you should consider. if not save up and go for jinko/ja/era/canadian solar.....ensure you buy direct from known distributors

The attached pics are from several yrs old 250w panels in bright sunlight.47w and 72w respectively

manya:
Hello all the Gurus in the house. I need your guide please.
I have a 60ftx30ft hall for my poultry and I need to use solar for the lighting. I have 2 pieces of 80watts solar panel. I have some background knowledge of solar system design.
I have decided to use 10 pieces of 5-7 watts DC bulbs. Please kindly help me and suggest the type of battery I should go for, it's capacity and where I can buy. Also the DC bulbs and charge controller.
NB: I need the system to light my hall for 10 hours.
Thank you.

durodee:
Battery type is not the first problem here. There is harvest versus usage disparity. Your panels will generate @ 600w/day under the best conditions. Yet you plan to use 500-700w/day. Chances are that the days in a year that you will meet your 10hours need will be few unless you change your calculations or expectations.

manya:

Thank you for your response. Then if I am to add yet another 80 watt panel, what spec of battery will be suitable for me?

manya:

Thank you for your response. Then if I am to add yet another 80 watt panel, what spec of battery will be suitable for me?

zeestone99:
Sunmart vmii 5.5kw 48v 100a hybrid inverter 500vdc - 375k

Sunmart Vmii 3.5kw 24v 100a hybrid inverter 500vdc - 320k

Sunmart Vmiii plus 3.5kw 24v 100a hybrid inverter 500vdc - 340k

Sunmart Vmiii plus 5.5kw 48v 100a hybrid inverter 500vdc - 395k

Sorotec Revo Vmii 5.5kw 48v 100a hybrid inverter 500vdc - 420k

Sorotec Revo Vmii 3.5kw 24v 100a hybrid inverter 500vdc - 340k

Sorotec 5.5kw 48v 100a hybrid inverter 500vdc parallel version (includes parrallel kit) - 460k

Sorotec 3.5kw 24v 100a hybrid inverter 500vdc parallel version (includes parrallel kit)- 380k

Sorotec Revo vmiii 5.5kw 48v 100a hybrid inverter 500vdc - 440k


Sorotec Revo vmiii 3.5kw 24v 100a hybrid inverter 500vdc - 360k

Powmr 3.2kva 24v 80a mppt hybrid inverter - 250k

Powmr 3.5kva 24v 100a mppt hybrid inverter - 340k

Powmr 5.5kva 48v 100a mppt hybrid inverter - 385k

Snadi 3.5kva 24v inverter wall mount (transformer) - 275k


Snadi 5.5kva 24v inverter wall mount (transformer) - 350k

Snadi 5.5kva 48v inverter wall mount (transformer) - 350k

Epever tracer 60a mppt charge controller - 175k

Epever tracer 100a mppt charge controller - 280k

Must 100a mppt solar charge controller - (out of stock)


Must 60a mppt solar charge controller - 130k

Must 80a mppt solar charge controller - 140k

Fangpusun flexmax 80a mppt charge controller - 270k

Fangpusun flexmax 60a mppt charge controller - 200k

Fangpusun 50a 12/24v - 90k

40amps mppt lumiax Bluetooth controller - 80k

60amps lumiax Bluetooth mppt controller - 145k

60amps 12/24/36/48v powermr mppt - 80k

Greenpole 48v 100ah lithium battery - 930k

Avr/current limiter 60a (Tomzn) - 10k

Avr/current limiter 63a 4pole (tomzn) - 25k

Change over breaker/MTS (tomzn) - 6.5k

Change over breaker/MTS 4pole (tomzn) - 15k

DC SPD 500v - 9k

DC spd 1000v (tomzn)- 10k

Ac spd 385v - 8k

Ac spd 275v (tomzn) - 9k

Ac spd 4 pole - 17k

DC Voltmeter (5v- 120v ) - 2k

Watt meter - 15k

Mc4 connectors - 650

Mc4 y connector 2 in 1 - 2.8k

Mc4 y connector 3 in 1- 4k

Mc4 y connector 4 in 1 - 8k

Programmable timer 15a UK pkug - 9k

Programmable timer 25a - 9k

solar DC fuse holder 1 pole (tomzn) - 3k

Solar DC fuse holder 2 pole (tomzn)- 5.5k

Solar DC fuse (10a/16a/20a/25a/30a) - 2k

DC breaker 10a 600v double pole (tomzn)- 6.5k

DC breaker 16a 600v double pole (tomzn) - 6.5k

DC breaker 20a 600v double pole (tomzn) - 6.5k

DC breaker single pole (32-63a) - 3k

DC breakers double pole 63a - 5k

DC breaker double pole 100a - 9k

Dc breaker double pole 125a - 10k

DC breaker double pole 100a (tomzn)- 10k

Dc breaker double pole 125a (tomzn)- 13k

Dc breaker mccb 250a double pole - 29k

Ha02 battery balancer - 35k

Automatic transfer switch (ATS) 63a (tomzn) - 21k (out of stock)

Automatic transfer switch (ATS) 100a (tomzn) - 26k

Automatic transfer switch (ATS) 125a (tomzn) - 26k

6 in 1 Ac display meter ( watts, voltage,kWh,amps, freq, power factor) - 15k

6 way breaker enclosure - 3.5k

9 way breaker enclosure - 4.5k

12 way breaker enclosure - 5k


DM for other items.

Call/chat - 08117398294
- 09067411214

Trippledots:


Nice, I learnt something today... thanks boss. the building is a commercial one and generally I don't meddle with their internal wires.

manya:

Thank you for your response. Then if I am to add yet another 80 watt panel, what spec of battery will be suitable for me?

Polaris1:
DC 12 volts, 6 watts
Cool, Led light bulbs.
Screw holder.
12 pcs. Sold together.
9,600 Naira. Surulere Lagos.

rodgers:
Are they new?

adrusa:
For the felicity crew in the house, I need some help and information.

I bought a new 120A Felicity Charge Controller yesterday, but it appears to be working differently from the previous one I have. I expect the Charge Controller to come up when I connect it to battery, but it does not. It only came up after I connected the panel. However, once it is dark, the controller died again. It woke up again this money once the sun came up.

The previous one wakes up even in the middle of the night when I press the on/menu button.

Can anyone with recent Felicity Charge Controller please share their experience with me.

Thanks.