₦airaland Forum

Saipro:
Makavele!

Sorry for the delay; duty calls.

here is the review of the 2kva microtek.

You already know how the inverter looks so i will skip physical attributes.

The inverter is rated for 2kva with a power factor of 1. which is impossible. So lets say 0.8; that puts it at 2kva x 0.8 = 1,6kW real power.

I have actually loaded the inverter up to 1500 W and it didn't cut off due to overload; so it's very good there.

But the problem i have with it is surge power which is non-existent; I mean zero.

My fridge is rated for 120W and freezer is rated for 125W thereabouts. I tried putting both of them on at the same time; and the inverter cuts o

off due to overload. So I had to set a timer to make the fridge come on 5 seconds after the freezer.

If the water dispenser (hot: 580W or so) is turned on; as soon as the cold (110W) comes on too; inverter cuts off.

So It cannot handle surges at all. The inverter is very quiet. Has 2 fan (rear + side) which kick in when its loaded to about 350W only . .

Though they are very quiet and smooth. It's a true sine wave; no humming of appliances. The crests might flatten out at higher power draw, i

can't tell cos you would need an oscilloscope for that. It is rugged, yes, idle power draw is 21W ( believe that ).

But my LED bulbs do flicker; especially when it is not loaded. Load the inverter and they become stable.

Also, when power is restored, my LED flicker deeply (just once) but very noticeable .. that is how I know when NEPA has struck or restored

power, lol; apart from the siren in the estate.

It is cool to touch even at maximum load; very lovely heat-exchange design. and Outputs about 20A during charging. Three stage charge; bulk

to float. But the float voltage is 13.3 (cyclic use) as against 13.6 - 13.8 (the norm for deep discharge).

Absorb is also at 13.8 as against 14.4 for my batteries. That is where I have a problem with it. It has a settings at the back for higher voltage, I

did it, still same thing. Uhmm, what else??

Lovely green LED lights for notification. Transfer time is about 10ms and it transfers power from grid and charges even when off.

Saipro:
Makavele!

Sir?

I have a Microtek 2KVA; I will give an in-depth review by morning.

damola1:
I use a outback vfx3024e inverter for sensitive equipment like server etc

I normally don’t charge with generator but no light in last 4 days so had to use gen to charge it.

Problem now is: out of the 4 times I have tried to change into the generator, twice the server trip off. Defeating the whole essence of the inverter

How can I fix this please ?

I remember I had this issue with a particular sound system for a friend that would always trip off during changeover; it has to do with transfer-time issues.
Tried 3 different inverter brands (even a premium US brand); still the same thing.
It worked finally, there is a trick; since he didn't want to splurge on purchasing an online-ups. . (take note: there is a difference between a regular ups and an online ups)
I got a regular 1kva UPS (more than enough power for the sound system); opened it up
removed the small battery; dedicated a single 100AH battery to it. Turned it on permanently and connected the sound system to it.
And isolated the sound-system and UPS combo . . this way it is not affected by the changeover. The battery is charged by the normal inverter.
and it has been like that since last year.

mcTrinity:
But then there's one thing with this neutral looping of a thing.

if you must run only one neutral cable to the Inverter and loop the input and output neutral, it means you have to connect that neutral at the neutral bar (at the distribution panel).

what I normally do is that I usually totally separate the inverter loads from the main distribution panel and move them to a separate panel. so all loads that the client want to be on inverter, I remove both their live and neutral from the main DB and connect them directly to the Inverter output through a mini panel.
then the inverter input goes to the main DB. hence 4 wires- 2L and 2N (with ground, of course)

where only one neutral cable will be run to the Inverter, the full separation won't be achieved. you have 3 wires- 2L and 1N

watcha think

And after you have suffered yaself finish; your house's neutral is looped with your next door neighbor's neutral and the next building
and they terminate at one point at the feeder or transformer or what have you.
The issue of neutral looping isn't etched in stone. You just have to do it right. The reason why every point/load in the house is not looped via neutral but instead dedicated a single wire to the DB is to avoid multiple failures. If you loop all the points/load with a single wire to the db, it will work. But in the event that the wire suffers breakage/corrosion/burn out. The whole house fails.
I actually looped my neutral from inverter 1 changeover, to inverter 2 changeover, to output and input for both, to the inverter loads to the the main DB, to inverter charging source from mains, every goddamn place . . .It took many days of intensive research but I did it right.
Earth is working perfectly too. Works for me, might not work for you.

VULCAN:
You made a rather emphatic statement about ROY solar in particular so that was why I asked expecting an explanation.

I know that MPPT is a superior technology to PWM in general, but I also know that not every brand of MPPT is good and not every brand of PWM is bad(After all, even Morningstar produces PWM).

At the end of the day it's based on what the manufacturer decides to put inside the box.

Google is an aggregation of people's knowledge and experiences but I wanted to know of yours-so could you kindly educate me on what is so bad about RoY? And as I asked previously, which brand do you recommend as an alternative?

And yes, my reason was enclosed in brackets; you didn't bother to read it; where I said it's a very fake one at that . .

which means there are fake PWMs but Roy is the "fakest" I have come across so far.

I used to have one a generic one with CM3024Z imprinted on it. You google that number for pictures of it.

It does a better job than Roy albeit PWM.

VULCAN:
Please what's wrong with ROY solar and what are the alternatives?

Without typing too much ENGLISH

ROY Solar is a PWM charge controller (and a very fake one at that);
unlike MPPT charge controllers.

Do a google search PWM vs MPPT charge controllers and expand your horizon.

Vested:
I have a 5kva 48v complete solar system for sale. It consists of the following:

5kva 48V pure sine wave inverter

4 of 200amps inverter batteries

8 of 130watts solar panels

50amps 48V solar charger.

Batteries are weak but still retain charge.

See my ad for further details and contact me.
https://www.nairaland.com/4568736/5kva-solar-inverter-4-batteries

no wonder the batteries died .

roy solar on top 4 x 200ah battery

hmmm

OnePunchMan:
420,420 credit alert received for items

Nice doing business with you; yet again !

Highly recommended and vouched for.

More to come

OnePunchMan:
Items ordered for my oga on this forum...

T'was nice doing business with you . . Very legit and highly recommended for your overseas solar (and accessories) purchase !

kiekie1:
Good to meet with you . . Thanks for the patronage Sir ! Cheer's

Anytime! anyday!

Dam5reey:
I sorry for you.. Good night
SMH...

Struck a nerve, did I?

Stanley08:
LMFAO!

Abeg guys, how far this Ntel browsing thing jare?

SMH

fowlyansh181:
like i said, your comment went from good to mentally deranged...

...

Pachesky:
Pls how old is this makavele guy..nairaland is filled with shallow minded men these days

I am 8

How can a 10yr old (you) be a pal to me?
You dig that analogy?
If u think I am not way above you;
lets do a video contest
Post a short video of u (or ur garage) and I will of me
and let NL judge who d boi is !
Common, get out
when i had my first child, u were still in school

Stanley08:
This makavele guy is just so fowl and has an irritating personality. Yuck

can u pls stop quoting me
i tot i stopped replying u

Dam5reey:
Empty barrels.. we all know what they do.

Thought you were too big for such deals..

Lord of second hand products..

I know your type, who live fake lives, owing millions...

Till u die, u & ur generation will never reach half of where I have reached! Its not a curse!

Its not about 2nd hand or 3rd hand; its about d amount involved. Afterall tokunbo cars are 2nd hand.

This comeback is too weak. You should try harder son!

I will bless your career tonight with 20k if your comeback comes hot!

Broke goat! waiting for your church member to

raise money with u to buy 1 battery!!!

Pig; u will come n beg me to dash u iTracer mppt

tomorrow at low ball price like u did d last time

fowlyansh181:
really wish this site has a downvote button. I honestly thought it was uncool when that guy poked into your business by asking about your idm version and nothing that concerns him, but your reply so far went from good to MENTALLY DERANGED..

Lol I understand but the only language they understand is this. Caustic soda !
The fool was saying indirectly I was using an outdated PC only for him to run and cower. The this busy body took it up and I had to put him in check ! Kapish !

Dam5reey:
Some people are just proud and arrogant, Even if you are the God of Nairaland, Or you are owner of Nigeria it self.. does not mean you should be disrespectful.

If you are really what you claim you are, then you are just one of those bragging kids out there... I can't imagine it's Dangote behind the moniker and would ever type those rubbish...

Grow up !, if you think you are bigger or older than everyone here.

Expecting someone you don't know as well to come and bow and beg you shows a lot of who you are..

shut up and go pick up ur one Ritar battery from Frank. I jst left his house, he is waiting for u
And while u are at it, ask him bout me!
I am ur father in all ramifications of life!

Stanley08:
Oga! I don't know you on or off Nairaland or on whatsapp. But you've displayed how 'unnecessary' you can be. Delete my number if you have it too. You hear? Thanks.

My friend; will u keep quiet?
If it’s to ask for odds now; u go carry ur useless self come ask! When next u have inverter issues; u will look for recommendation again!
Ungrateful kid!

industrialchemi:
Lol, okay nah.

Hw r u?

industrialchemi:
Why are you laughing?

Cos Stanley is my boy . . . on & off Nairaland !
If he knew the person behind this moniker; he would quickly apologize on whatsapp

Stanley08:
Lol. Bye.

Hang yourself !

Stanley08:
Telling a joke and laughing at it yourself. Lol. My guy, just go back to the server room.

Try harder !

5k is yours each time you make sense !

Yaba m0ron !!

Stanley08:
Ehn. You are downloading on a server PC. What now happen?! Oga! Shift jor!

Wat now happen is that next time; stop doing your mouth chor chor chor like ashawo 10kobo

toluxa1:
Which kind old version of IDM is this? Abi na the windows old? This is how my system looked way back 2008

I'm not into your win7 & win10 sh!t

swift on drugs

....

DUNKA:
Goodmorning house please I need to know how long a 50litre electric hot water heater will keep its water hot without power?

Also what type of programmable timer do I need for the water heater?

Any suggestions or insights would be appreciated


Thanks!

I use Ariston and if left untouched, it will retain its hotness for 3 days .. .

But when used, fresh cold water flows in to fill up slowly; then it retains the hotness for about 36 hours or so.

kiekie1:
HURRY ! TESTED & VERY OK !! CALL TO BOOK YOURS NOW!!!

Ritar 12v 105a telecom batteries ... #27,000
Limited stock "fairly used" at affordable price

Contact:
Smartcell global services
081-350-31951

Keep 8 sharp ones for me sir !