₦airaland Forum

Tdoctor:
Anyone selling a 60A SRNE charge controller here?

Are you looking to Buy brand new or Used ?
The Used I know of is 40amps while the brand new I know of is not directly under my care. Also you're in Anambra while I'm in Lagos

Ofejiro20:
thanks boss but I already have a charge controller. Having an hybrid inverter would mean that my charge controller will no longer be useful

You can use both together. And also it's not like a standalone inverter of that capacity would be cheaper than a hybrid anyway.

Ofejiro20:
thanks boss but I already have a charge controller. Having an hybrid inverter would mean that my charge controller will no longer be useful

You can go for a non hybrid HF inverter.

xzynwa:
This ain't detailed enough for one to give a suggestion.

Answers to the following question will give a clearer information to what the recommended setup could look like.

Does the hospital plan to go completely offgrid?

Will all the loads be powered at the same time?

What are the critical loads and for how many hours would they be powered?

How many hours of grid power is available?

Would there be room for upgrade or addition of other appliances?

By the way, what about the 3 fridges/freezers at 1500w each still giving a total of 1500w?

Nna eh.
I ask WAEC question, you change am to JAMB question 😁😁🤣.

It'll only replace gen, meaning it's purpose is only to take up those hours when there's no nepa (let's say max 5 hours no nepa - but you can't trust nepa sha). They still intend to use nepa.
Forget the fridge watts, u can clearly see it's a mistake.
Assume that they'll be powered at same time.
Any where could be upgraded any time.

HeavenlyBang
Edrizz
dollarnaira

I was thinking at least 30kwh battery.
Its inverter to use that's cracking me head.

cutefy:
You can go for a non hybrid HF inverter.

Are there non-hybrid HF inverter? Or you meant to write Low frequency inverter?

It'll amaze me to know there's a non-hybrid high freq inverter. Pls what brand is that?

6kva inverter is fine
The 30kwh battery is fine too.
Based on your explanation, 5-6kwpanel should suffice

ask4bk:
Nna eh.
I ask WAEC question, you change am to JAMB question 😁😁🤣.

It'll only replace gen, meaning it's purpose is only to take up those hours when there's no nepa (let's say max 5 hours no nepa - but you can't trust nepa sha). They still intend to use nepa.
Forget the fridge watts, u can clearly see it's a mistake.
Assume that they'll be powered at same time.
Any where could be upgraded any time.

HeavenlyBang
Edrizz
dollarnaira

I was thinking at least 30kwh battery.
Its inverter to use that's cracking me head.

Mrreed:
6kva inverter is fine
The 30kwh battery is fine too.
Based on your explanation, 5-6kwpanel should suffice

Thanks bro..
With full capacity load of 5000w, you still advice for a 6kva inverter?

Mrreed:
6kva inverter is fine
The 30kwh battery is fine too.
Based on your explanation, 5-6kwpanel should suffice

hmm

ask4bk:
Thanks bro..
With full capacity load of 5000w, you still advice for a 6kva inverter?

10kw inverter shud b d minimum. as for batterry, alot has to b considered..time of usage of appliances (day/night), running hours...

SaintUlot:
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Check this thread for pictures:
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Make the best use of your Solar installation.

ask4bk:
Nna eh.
I ask WAEC question, you change am to JAMB question 😁😁🤣.

It'll only replace gen, meaning it's purpose is only to take up those hours when there's no nepa (let's say max 5 hours no nepa - but you can't trust nepa sha). They still intend to use nepa.
Forget the fridge watts, u can clearly see it's a mistake.
Assume that they'll be powered at same time.
Any where could be upgraded any time.

HeavenlyBang
Edrizz
dollarnaira

I was thinking at least 30kwh battery.
Its inverter to use that's cracking me head.

Keep in mind that if those fridges are actually 1500w running power and not inverter fridges, you could be dealing with up to 7kw starting power. Add other appliances and a 10kw inverter is what you should go for.

30-35kwh of batteries sounds about right.

HeavenlyBang:
Keep in mind that if those fridges are actually 1500w running power and not inverter fridges, you could be dealing with up to 7kw starting power. Add other appliances and a 10kw inverter is what you should go for.

30-35kwh of batteries sounds about right.

Not to consider days when they battery bank is yet to recover fully from previous day's usage or days of poor weather.

Also as for the freezers, who knows if they are the types used in temporarily storing bodies or mayBe blast freezers sef.

Let's not assume since a hospital ain't a household.

In situations such as this, after studying things, even going there in person, I would give 3 quotations:
1. The actual quotation (e.g 10kwh)
2. The actual quotation with 50% extra (e.g if 10kwh, this would be 15kwh)
3. The actual quotation with 100% extra (e.g if actual is 10kwh, this would be 20kwh)

Also you try to put as less pressure as you could on the batteries. MayBe even make the setup 2 parts where 1 part handles a set of loads while another handles a set of loads.
Also hope these don't include MRI machine sha.

Truth is, a lot of times, don't rely on the client giving you their full load hence you need factor that in as allowance.

I put brief explanations and suggest they grant me a face to face opportunity to explain further. this is necessary in organizations where there are lots of bureaucracies.

bassdow:
Not to consider days when they battery bank is yet to recover fully from previous day's usage or days of poor weather.

Also as for the freezers, who knows if they are the types used in temporarily storing bodies or mayBe blast freezers sef.

Let's not assume since a hospital ain't a household.

In situations such as this, after studying things, even going there in person, I would give 3 quotations:
1. The actual quotation (e.g 10kwh)
2. The actual quotation with 50% extra (e.g if 10kwh, this would be 15kwh)
3. The actual quotation with 100% extra (e.g if actual is 10kwh, this would be 20kwh)

Also you try to put as less pressure as you could on the batteries. MayBe even make the setup 2 parts where 1 part handles a set of loads while another handles a set of loads.
Also hope these don't include MRI machine sha.

Truth is, a lot of times, don't rely on the client giving you their full load hence you need factor that in as allowance.

I put brief explanations and suggest they grant me a face to face opportunity to explain further. this is necessary in organizations where there are lots of bureaucracies.

I think 10-15kw is fine. 20kw is overkill for sure, if we're going by the load he shared.

That was me assuming you already overstated the load. Even those white double opening freezer with old compressor don't draw 400w continuously.

ask4bk:
Thanks bro..
With full capacity load of 5000w, you still advice for a 6kva inverter?

HeavenlyBang:
Keep in mind that if those fridges are actually 1500w running power and not inverter fridges, you could be dealing with up to 7kw starting power. Add other appliances and a 10kw inverter is what you should go for.

30-35kwh of batteries sounds about right.

You think a high frequency Growatt 12000 ES (12kw) is durable enough to handle regular heavy inductive loads without needing repairs every year? 😭😭.
Abi just to go for transformer low frequency inverter?

brightk

bassdow:
Not to consider days when they battery bank is yet to recover fully from previous day's usage or days of poor weather.

Also as for the freezers, who knows if they are the types used in temporarily storing bodies or mayBe blast freezers sef.

Let's not assume since a hospital ain't a household.

In situations such as this, after studying things, even going there in person, I would give 3 quotations:
1. The actual quotation (e.g 10kwh)
2. The actual quotation with 50% extra (e.g if 10kwh, this would be 15kwh)
3. The actual quotation with 100% extra (e.g if actual is 10kwh, this would be 20kwh)

Also you try to put as less pressure as you could on the batteries. MayBe even make the setup 2 parts where 1 part handles a set of loads while another handles a set of loads.
Also hope these don't include MRI machine sha.

Truth is, a lot of times, don't rely on the client giving you their full load hence you need factor that in as allowance.

I put brief explanations and suggest they grant me a face to face opportunity to explain further. this is necessary in organizations where there are lots of bureaucracies.

I like how you are reasoning the "what ifs".
When a hospital says freezer/fridge, it may not mean our household freezers. It could be for bodies or any thing. I didn't go to check it, but the person that did said 500w for each. Could be right or wrong. As you said, until one goes and is sure. There are freezers that are cold rooms. You walk into the freezer with your entire body and inside is like full self contain room, but it's a freezer. They can consume power in kws.

ask4bk:
I like how you are reasoning the "what ifs".
When a hospital says freezer/fridge, it may not mean our household freezers. It could be for bodies or any thing. I didn't go to check it, but the person that did said 500w for each. Could be right or wrong. As you said, until one goes and is sure. There are freezers that are cold rooms. You walk into the freezer with your entire body and inside is like full self contain room, but it's a freezer. They can consume power in kws.

The answer to your question is here. You need to go and find out, and also ask those important questions regarding the usage time, grid-reliance, and all that. Else, any answer here is just based on estimations or guesses that could turn out costly later on.

ask4bk:
I like how you are reasoning the "what ifs".
When a hospital says freezer/fridge, it may not mean our household freezers. It could be for bodies or any thing. I didn't go to check it, but the person that did said 500w for each. Could be right or wrong. As you said, until one goes and is sure. There are freezers that are cold rooms. You walk into the freezer with your entire body and inside is like full self contain room, but it's a freezer. They can consume power in kws.

Tell them to go and buy Mikano generator. End of discussion!!!
No go put urself for wahala oo. Them go spend tire with complaints..

From the total power consumption of the appliances listed which is 5910w, you should go for a 10kw or at best 12kw inverter.

The is reason is quite simple. Considering things like safety factors, assumptions based on you not physically present for on-site assessments and likelihood of the hospital using other appliances not earlier listed (remember, when this inverter sleep starts getting sweet the user will like to throw in appliances not earlier budgeted) 😴 😀

A likely pointer to the inverter size could be the size of the generator used to power those loads. Get the generator power capacity and oversize it slightly and you get the answer to it.

A 6000w load at 6 hours would be 36kwh. At 80% depth of discharge you will need 45kwh of battery storage to achieve that. Trust me, you will need more than that.

Since there would be grid power to charge the battery, you may get by with roughly about 15-20kwp of solar power.

Mind you, the above suggestion is based on you relying on the information provided by an organisation that may beyond the listed appliances, and stressing the setup beyond what an informed user may decide to do.

Finally, a job like this requires one to have an on-site inspection and critical questions asked than relying on assumptions to avoid stories that touch and "solar na scam"

ask4bk:
Nna eh.
I ask WAEC question, you change am to JAMB question 😁😁🤣.

It'll only replace gen, meaning it's purpose is only to take up those hours when there's no nepa (let's say max 5 hours no nepa - but you can't trust nepa sha). They still intend to use nepa.
Forget the fridge watts, u can clearly see it's a mistake.
Assume that they'll be powered at same time.
Any where could be upgraded any time.

HeavenlyBang
Edrizz
dollarnaira

I was thinking at least 30kwh battery.
Its inverter to use that's cracking me head.

xzynwa:
From the total power consumption of the appliances listed which is 5910w, you should go for a 10kw or at best 12kw inverter.

The is reason is quite simple. Considering things like safety factors, assumptions based on you not physically present for on-site assessments and likelihood of the hospital using other appliances not earlier listed (remember, when this inverter sleep starts getting sweet the user will like to throw in appliances not earlier budgeted) 😴 😀

A likely pointer to the inverter size could be the size of the generator used to power those loads. Get the generator power capacity and oversize it slightly and you get the answer to it.

A 6000w load at 6 hours would be 36kwh. At 80% depth of discharge you will need 45kwh of battery storage to achieve that. Trust me, you will need more than that.

Since there would be grid power to charge the battery, you may get by with roughly about 15-20kwp of solar power.

Mind you, the above suggestion is based on you relying on the information provided by an organisation that may beyond the listed appliances, and stressing the setup beyond what an informed user may decide to do.

Finally, a job like this requires one to have an on-site inspection and critical questions asked than relying on assumptions to avoid stories that touch and "solar na scam"

Simple truth.
Thanks

dollarnaira:
Tell them to go and buy Mikano generator. End of discussion!!!
No go put urself for wahala oo. Them go spend tire with complaints..

🤣🤣🤣.
Na the diesel dem de spend on the mikano wey dem already get dem wan run away from.

ask4bk:
You think a high frequency Growatt 12000 ES (12kw) is durable enough to handle regular heavy inductive loads without needing repairs every year? 😭😭.
Abi just to go for transformer low frequency inverter?

brightk

maybe you should visit the location and do some analysis.. check each devices consumption, peak load hrs and off peak load hrs.. i think u can draw your conclusion from there.

brightk:
maybe you should visit the location and do some analysis.. check each devices consumption, peak load hrs and off peak load hrs.. i think u can draw your conclusion from there.

You are right.
But assuming (we are doing assumptions now) the load is truly 5kw at peak, would you suggest a high frequency inverter like Growatt 12000 ES (12kw), or you would prefer a transformer based inverter coz of surge current from hospital inductive loads?

ask4bk:
You are right.
But assuming (we are doing assumptions now) the load is truly 5kw at peak, would you suggest a high frequency inverter like Growatt 12000 ES (12kw), or you would prefer a transformer based inverter coz of surge current from hospital inductive loads?

i would rather pick a deye 12kw over growatt 12000 Es. but factor in their pockets..

ask4bk:
🤣🤣🤣.
Na the diesel dem de spend on the mikano wey dem already get dem wan run away from.

Then run away. No go inherit people problems ooo. Be warned!!!

Quick question for the experts in the house. Can this old model Felicity 60A MPPT, which does not have lithium settings, charge a Firman 5kWh 24V lithium battery, and can I use the user-defined option in the battery selection settings?

HeavenlyBang:
I think 10-15kw is fine. 20kw is overkill for sure, if we're going by the load he shared.

Reason why there are 3 options and most times, after discussion with client, we mostly use either option 1 or an amended version.

That a client gave you their load list, doesn't necessarily mean you follow it blindly because should expectation run low, you're the first to blame even when it's the other way.

olatade:
Quick question for the experts in the house. Can this old model Felicity 60A MPPT, which does not have lithium settings, charge a Firman 5kWh 24V lithium battery, and can I use the user-defined option in the battery selection settings?

A user-defined option, in most cases is equivalent to the Lithium setting.

But then again, depending on how far you can modify those settings, you just might be better off getting a Charge Controller with support for Lithium batteries. This is mostly because the charging pattern for lead acid batteries differs from how Lithium batteries are charged e.g Lithium doesn't require floating.

In fact, except you just want to take your chance, would just suggest you get another charge controller with Lithium battery support. Even if you use the User-Option, you still wouldn't be able to completely replicate the exact charging profile for Lithium batteries which mostly have just 2 stages compared to the 4 stages of lead acid batteries.

dollarnaira:
Then run away. No go inherit people problems ooo. Be warned!!!

Not everyOne can afford to let a client go Ooo. Let's be honest with ourselves; especially when the numbers in the profit are high.

brightk:
i would rather pick a deye 12kw over growatt 12000 Es. but factor in their pockets..

Client wey insist on buying everything himself, have had to change his MUST charge controller in less than 8-months. Money wey him no want take buy quality item, him don spend am the other way round.

e get the kind capacity you go dey run, you need quality items. At least play your part make you know say you don try.


Another thing is, Solar power isn't really all that super efficient on some load types. e get as the load go take big reach, petrol / diesel generator go just better EXCEPT they really got the resources to plan and build such system. At such stage, that kind work no be wetin dem dey give any how

bassdow:
Not everyOne can afford to let a client go Ooo. Let's be honest with ourselves; especially when the numbers in the profit are high.

But this numbers here will lead to tears.
No be all meat person dey chop.