AmakaRuby:


250-300, 3.5kva to 5kva

You won't find at that price, but raise your budget to around 350k and you'll have options under 3.5KVA.

loluskysat:
So why do you still have a spark when you connect your inverter to the battery?

There is a difference between in-rush current and surge current.

Interesting

available for sale

SRNE & growat

let me know what you need

whatsapp 08051355133

08035153923

If you still experience a spark above the capacitance of your inverter after a pre-charge circuit or resistor is introduced in your setup and start-up, then something is amiss.

Of course there's a difference between in-rush current and surge current in devices and circuits, you should always outline your arguing points.
Just as you simply put it out, you should have also explained the difference and how to protect your devices from both types.

It would be interesting to see your analogies of both types of current and how you could use an SPD to resolve the IN-RUSH type of current.

I don't know about others here, but despite my knowledge, I am here to learn more.

loluskysat:
So why do you still have a spark when you connect your inverter to the battery?

There is a difference between in-rush current and surge current.

Daniel2802:
Hello everyone. I have this SRNE HYP4850S100-H inverter for sale at 750k

It comes with 18 months warranty. Location is Port Harcourt, but I can waybill to anywhere.

WhatsApp/Call: 081-6157-6719
Specsheet attached.

Still available

July price slash!
24v 100ah 2560kwh lifepo4 lithium battery available with 100A JK Bluetooth bms and JK 3.2inch display @600k

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12v/24v 1600w, 2000w, 3000w pure sine wave sachet inverter available at discounted prices

note all are real capacity, no wayo with smart bms
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jonescosmos:
Of course it's a SHORT CIRCUIT FAULT as clearly seen on the screen.

Your first diagnoses should be to power off the output breaker on the Inverter or UPS, restart it and see if the fault continues.

1. If it continues, you might want to have the unit checked out by a professional, a dust clogged PCB might also cause it.
2. If the fault goes away after tripping the output breaker, then have your load appliances wiring checked out by a qualified electrician for possible shorted wires.

Thank you sir, the problem persisted even after powering everything off and putting it back on, so I've resolved to taking it to the factory for check up..

jonescosmos:


You can google how to protect your Inverter from in-rush current for more info.

Quite correct about the inrush current.

Will prowse uses a pre-charge resistor too before connecting the batteries to the inverter. A cheap alternative is using a 220v/100w or 200w tungsten filament bulb instead of the resistor. In most cases, the bulb will glow slightly when connected inline with one of the battery cables. A 30second wait is usually enough to eliminate such in-rush sparks. Below a 48v tungsten bulb was used. (In absence of that, I use the 100w bulb readily available, wired with a lamp holder and 2 leads. I just hold it for longer)


https://www.youtube.com/watch?v=DOrJ5AH9yjM

https://diysolarforum.com/threads/has-anyone-solved-this-inrush-current-limiter-precharging-circuit-issue.82666/...

https://diysolarforum.com/threads/do-most-builders-users-not-use-inverter-precharge.65222/

The above link discusses the issue when the BMS shuts down for some time, and an inrush current occurs when the BMS switches on again. In this case, the external pre-charge resistor or bulb is of no help.


Hope this helps someone

Hello guys, I'm about doing a solar system in my house in Benin and below is the quotation given to me by the installer. Are these prices fair. Somebody also suggested that I get the materials myself especially the inverter and the lithium battery. If so, how can I get these from the factory directly? Also between Felicity and Yohako, which should I go for since there's over 200k difference in the estimates for both.

I was also thinking about going for a 7.5KVA inverter set up for the load I'm planning to use in the house to reduce cost. 1 2hp inverter standing AC, 1 1HP inverter AC, 6 fans at 50W each, 3 TVs at 100W each, 1 inverter fridge of 200W, 2 inverter freezers of 100W each, bulbs, washing machine of 350W and lighting points. Of course, I'm not going to run all the appliances at the same time. But from what I calculate, all of these are just about 5000W in total. Is there need to go for a 10KVA or will the 7.5KVA be more than sufficient?

Tucode:
Hello guys, I'm about doing a solar system in my house in Benin and below is the quotation given to me by the installer. Are these prices fair. Somebody also suggested that I get the materials myself especially the inverter and the lithium battery. If so, how can I get these from the factory directly? Also between Felicity and Yohako, which should I go for since there's over 200k difference in the estimates for both.

I was also thinking about going for a 7.5KVA inverter set up for the load I'm planning to use in the house to reduce cost. 1 2hp inverter standing AC, 1 1HP inverter AC, 6 fans at 50W each, 3 TVs at 100W each, 1 inverter fridge of 200W, 2 inverter freezers of 100W each, bulbs, washing machine of 350W and lighting points. Of course, I'm not going to run all the appliances at the same time. But from what I calculate, all of these are just about 5000W in total. Is there need to go for a 10KVA or will the 7.5KVA be more than sufficient?

Fair Deal, why not suggest if he 10.2KW/11KW Hybrid inverter with Dual MPPT. It selling around 1.3M Range.
Something Like this, so you don't have to buy extra Controller as well as reduce cost on cabling.
MPPT 450V 150A;
WIFI+parallel function+BMS
AC Output Power:11KW
Battery Input Voltage:48V
PV Input Voltage Range:90-450VDC
Controller:150A MPPT
MAX.PV Input Power:5500W*2
MAX.PV Input Current:18A*2

But I would recommend you allow your installer decide and buy all the accessories, you are paying for the service so you dont need to stress yourself, sourcing materials no be small Job!

lexi28:


Quite correct about the inrush current.

Will prowse uses a pre-charge resistor too before connecting the batteries to the inverter. A cheap alternative is using a 220v/100w or 200w tungsten filament bulb instead of the resistor. In most cases, the bulb will glow slightly when connected inline with one of the battery cables. A 30second wait is usually enough to eliminate such in-rush sparks. Below a 48v tungsten bulb was used. (In absence of that, I use the 100w bulb readily available, wired with a lamp holder and 2 leads. I just hold it for longer)


https://www.youtube.com/watch?v=DOrJ5AH9yjM

https://diysolarforum.com/threads/has-anyone-solved-this-inrush-current-limiter-precharging-circuit-issue.82666/...

https://diysolarforum.com/threads/do-most-builders-users-not-use-inverter-precharge.65222/

The above link discusses the issue when the BMS shuts down for some time, and an inrush current occurs when the BMS switches on again. In this case, the external pre-charge resistor or bulb is of no help.


Hope this helps someone

I've used this bulb trick to charge up gigantic capacitors in some old school IGBT inverter. It works.

Thanks for your response. However, will getting a 7.5KW hybrid inverter with the dual MPPT work for the quoted load above?

Dam5reey1:


Fair Deal, why not suggest if he 10.2KW/11KW Hybrid inverter with Dual MPPT. It selling around 1.3M Range.
Something Like this, so you don't have to buy extra Controller as well as reduce cost on cabling.
MPPT 450V 150A;
WIFI+parallel function+BMS
AC Output Power:11KW
Battery Input Voltage:48V
PV Input Voltage Range:90-450VDC
Controller:150A MPPT
MAX.PV Input Power:5500W*2
MAX.PV Input Current:18A*2

But I would recommend you allow your installer decide and buy all the accessories, you are paying for the service so you dont need to stress yourself, sourcing materials no be small Job!

Thank you for this sequel backup support on this issue, I hope that most of us here will learn from this.

lexi28:


Quite correct about the inrush current.

Will prowse uses a pre-charge resistor too before connecting the batteries to the inverter. A cheap alternative is using a 220v/100w or 200w tungsten filament bulb instead of the resistor. In most cases, the bulb will glow slightly when connected inline with one of the battery cables. A 30second wait is usually enough to eliminate such in-rush sparks. Below a 48v tungsten bulb was used. (In absence of that, I use the 100w bulb readily available, wired with a lamp holder and 2 leads. I just hold it for longer)


https://www.youtube.com/watch?v=DOrJ5AH9yjM

https://diysolarforum.com/threads/has-anyone-solved-this-inrush-current-limiter-precharging-circuit-issue.82666/...

https://diysolarforum.com/threads/do-most-builders-users-not-use-inverter-precharge.65222/

The above link discusses the issue when the BMS shuts down for some time, and an inrush current occurs when the BMS switches on again. In this case, the external pre-charge resistor or bulb is of no help.


Hope this helps someone

Disco01:


See the information and know if something can be done

It's the manual you will check, not chassis.

Allem:
I dey interested

DM. Although another person has indicated interest, but who pays first picks it up.

Just want to recoup money.

saint2ace:


This assumption is wrong, it works doesn't make it optimal, but that's a subject for another day. Cheers

Wrong? For two lithium packs?

Toh....my oga av spoken. 🙌

toyeoye:
How true is this statement please

"Lithium battery is crashing. Cells that cost $2200 for 14kWh is now close $900. This means you can have 8kWh lithium battery grade A for less 500k. That is the about 3 Tubular battery worth of lithium. Lithium prices crashing so fast naira inflation is struggling to keep up"

8kwh for 500k?...where abeg

mctfopt:


I've used this bulb trick to charge up gigantic capacitors in some old school IGBT inverter. It works.

Please what's the New school that succeeded IGBT.

I'm still a learner in this solar field

Whats the worst that can go wrong in buying a fairly used inverter.... I mean is there anyway to check the mileage?

swagifted:
Whats the worst that can go wrong in buying a fairly used inverter.... I mean is there anyway to check the mileage?

Inverter no be motor .
You will have to rely on what the seller is telling you

Obnoxious2001:


Inverter no be motor .
You will have to rely on what the seller is telling you

No be motor na vehicle car

For your Industrial Power Supply Equipment, you can contact us on 08066332919. We have Offices in Lagos , Abuja and also do Nationwide Delivery and Installation

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swagifted:
Whats the worst that can go wrong in buying a fairly used inverter.... I mean is there anyway to check the mileage?

Open it and if you have the eye for it could see if it's the original soldering on the board or if there's an attempt on repair. Most repaired inverter often fail soon enough due to either inferior part used or wrong equivalent component used that may work for a short time. Check the transformer for signs of stress if it's a transformer based inverter. Generally look at the internals of the power board and check the state of ithe components. If it's all good, pay and hope it doesn't fail.

Omo... Person wan sell victron quattro 10kva for 1.5million.... I don reason am taya

mctfopt:


Open it and if you have the eye for it could see if it's the original soldering on the board or if there's an attempt on repair. Most repaired inverter often fail soon enough due to either inferior part used or wrong equivalent component used that may work for a short time. Check the transformer for signs of stress if it's a transformer based inverter. Generally look at the internals of the power board and check the state of ithe components. If it's all good, pay and hope it doesn't fail.

Abeg what budget friendly 24V hybrid inverter do you guys recommend that will be capable of carrying a 1 hp or 1.5hp water pump as one of its load?

ojesymsym:
Abeg what budget friendly 24V hybrid inverter do you guys recommend that will be capable of carrying a 1 hp or 1.5hp water pump as one of its load?

SAKO, Welion, ANERN 24v 4.2kw hybrid inverter

swagifted:
Omo... Person wan sell victron quattro 8kva for 1.5million.... I don reason am taya

The price is high, in my opinion. I'll rather buy a brand new 10kw SRNE Hybrid inverter than buy a used 8kva Victron for that amount.

Thanks boss, are they transformer based?

Any idea of price range? You suppose de sell sef, right?

Valto:
SAKO, Welion, ANERN 24v 4.2kw hybrid inverter

mctfopt:


The price is high, in my opinion. I'll rather buy a brand new 10kw SRNE Hybrid inverter than buy a used 8kva Victron for that amount.

sorry, its 10kva not 8kva

swagifted:
sorry, its 10kva not 8kva

How much is brand new one?
How long has it been in service?

10kva Deye with dual mppt will just be a little higher than the 1.8m