NiyiOmoIyunade:

Find a blower fan to provide additional cooling to the MorningStar's heatsink - experiment with a normal house standing fan for starters and report back what you see performance wise.

GeorgeD1:


niyi,
an external fan for the morningstar?
that's certainly food for thought.

pranil:


from the Logo Seems to be Ritar - RA12-200D AGM - http://www.ritarpower.com/upimg/2015121116432284.pdf

at swiftmall it is at normal price (130 K) - http://www.swiftermall.com/inverter-batteries/1035-ritar-200ah-12v-agm-deep-cycle-battery.html

may be old stock ?

NiyiOmoIyunade:
Now you know what it means to have a good charge controller at work in tandem with a properly mounted and oriented PV array.

Find a blower fan to provide additional cooling to the MorningStar's heatsink - experiment with a normal house standing fan for starters and report back what you see performance wise.

Tchyfingy:
I recently installed a 3000w 48v mustpower inverter and observed that the temperature of the body really gets very hot reaching up to about 65 deg.C as indicated from the lcd display. Although when it gets that hot, the cooling fan comes on. I just want to know whether it's normal. If not, is there anything that can be done? thanks

makavele:


For space & energy sakes . . a normal house standing fan would be an overkill . .
he could use a simple USB/DC fan mounted close to the controller . . kapish

I happen to use the 3rd one (first row) and it has been superb so far.

edit: you can cut off the USB end and extend the wires to your heart's desire.

Tchyfingy:
I recently installed a 3000w 48v mustpower inverter and observed that the temperature of the body really gets very hot reaching up to about 65 deg.C as indicated from the lcd display. Although when it gets that hot, the cooling fan comes on. I just want to know whether it's normal. If not, is there anything that can be done? thanks

NiyiOmoIyunade:
I know na bros.

That is why I said 'experiment' - I nor wan make Oga Sinistrian stress himself - when he sees the improvement and/or performance difference then he would be convinced and can get a dedicated DC fan.

Tchyfingy:
I recently installed a 3000w 48v mustpower inverter and observed that the temperature of the body really gets very hot reaching up to about 65 deg.C as indicated from the lcd display. Although when it gets that hot, the cooling fan comes on. I just want to know whether it's normal. If not, is there anything that can be done? thanks

NiyiOmoIyunade:
This is a bit of a controversial topic.

External cooling is not generally required for the MorningStar because it has a robust heatsink installed, HOWEVER, external cooling ensures that the CC runs really cool under all operating conditions, ensuring optimal performance and long life of the internal electronics.

Unbeknownst to most people, the MorningStar MPPT CCs actually derate current at heatsink temperatures above 80°C - this kind of temperature is not uncommon in the tropics (read Nigeria) in poorly ventilated indoor installations hence MorningStar published a 16 page TechTip on the subject of temperature and cooling.

Using the TechTip manual, it is possible to perform the fairly complicated calculations to determine if one needs to incorporate external cooling in his scenario - in my case, when I have my blower fan in operation, the CC heatsink is only slightly warm to the touch but with the fan off, hot enough to burn one's hands. At the very minimum, additional cooling will help secure long life for the CC's internal electronics as they face a lot less thermal stress.

I will reproduce a few relevant pages from the

Good analysis

NiyiOmoIyunade:
I know na bros.

That is why I said 'experiment' - I nor wan make Oga Sinistrian stress himself - when he sees the improvement and/or performance difference then he would be convinced and can get a dedicated DC fan.

But man I still can't believe the output I am seeing: 69Ah generated and it's not even 12 noon yet ...

NiyiOmoIyunade:
This is a bit of a controversial topic.

External cooling is not generally required for the MorningStar because it has a robust heatsink installed, HOWEVER, external cooling ensures that the CC runs really cool under all operating conditions, ensuring optimal performance and long life of the internal electronics.

Unbeknownst to most people, the MorningStar MPPT CCs actually derate current at heatsink temperatures above 80°C - this kind of temperature is not uncommon in the tropics (read Nigeria) in poorly ventilated indoor installations hence MorningStar published a 16 page TechTip on the subject of temperature and cooling.

Using the TechTip manual, it is possible to perform the fairly complicated calculations to determine if one needs to incorporate external cooling in his scenario - in my case, when I have my blower fan in operation, the CC heatsink is only slightly warm to the touch but with the fan off, hot enough to burn one's hands. At the very minimum, additional cooling will help secure long life for the CC's internal electronics as they face a lot less thermal stress.

I will reproduce a few relevant pages from the TechTip manual below;

sinistrian:

I used to overclock computer CPU's so i know how important the fan is In fact i have already ordered a 48V dc fan from aliexpress so I can connect the terminals directly to my busbars. The MorningStar heatsink temperature is currently 51°C, when it's doing the most work.

_{But man I still can't believe the output I am seeing: 69Ah generated and it's not even 12 noon yet ...}

pranil:


Gentelmen - A humbel request
Is it possible to start quoting WH or KWH numbers - The Ah are difficult to digest without context ( battery bank , panels configuration etc)

e.g 250 watt panel on 12 V batttery is max 20 Ah(per hour) on battery side so Battery Ah will be very high in contract to 250 watt on 48 V battery ( 5 Ah ( per hour max)

on Panel side Ah if the 3 no.s of 250 watt panels are in sries they will yeild approx 8 Ah max per hour
the same 3 no of of panels in partallel will Yeild appox 24 Ah ( per hour)

Wh removes all the confusion as it remains same irrespective of battery or panel configuartion with minor effect on battery side due to CC effciency

A better no to quaote is KWH/KWp which is neutral to system configuration of amount of installed panels

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TPAND:
Do you deliver and install in lagos.

makavele:


For space & energy sakes . . a normal house standing fan would be an overkill . .
he could use a simple USB/DC fan mounted close to the controller . . kapish

I happen to use the 3rd one (first row) and it has been superb so far.

edit: you can cut off the USB end and extend the wires to your heart's desire.

Saipro:


Been looking for a 24VDC or 48VDC fan to get some ventilation to my batteries, which are boxed in a corner or the premises. Something not too big, not too small. Will use the logic of the Midnite's AUX1 to ensure only while batteries are charging.

Such a fan should not exceed 20W consumption (30W tolerable). Any suggestion?

DMerciful:
Battery going out of sync is the biggest challenge to series batteries. I am changing the configuration of a client system to 12v bcoz of this. For me the max system voltage should be 24v..best is 12v.

makavele:


Will send a link for one as soon as I can get on a computer. They don’t even use up to 5 W and are brushless

Saipro:


Can be a nightmare especially because, by the time you're noticing, it's probablytoo late (the same weaker batteries tend to keep drifiting and you're forced to do equalizing charges more often - pretty hard on the entire rack). A short term solution is to switch to the next lower bank config voltage value and run a series/parallel but it seldom helps for long as a weak cell tends to mysteriously appear in the stronger string used in keeping the weaker one in check. Given me no small misery with a few clients habitually abuse their battery banks.

davodyguy:
Hello all.

If you need Canadian Solar, let me know. Ill link you up directly with the main distributor. Gennex Technology for great discount, courtesy of being members of same Nairaland Forum. I would't collect 1 kobo for the link up

abunafiu:
Make una folllow me analyse this. Fridge, iron join others.

People need to wise up not to fall into wrong hands.

lexi28:
hi house. I have a question
there are 6 no's 300w panels.(imp :8.24amp, Vmp : 36.7v, VOC: 44.06v) and two MPPT controllers available. system is to run on 48v. according to gleanings from the forum:

fangpusun prefers 2s*3p : total string current : 8.24*3= 24.72a

TriStar/epever prefer 3s*2p: total string current:16.48a

which will offer more MPPT Current under the same light conditions?

Mr Niyi
George D.
kiekie,
makavele
Oga Chris
JUO
anyone who has tried it the comparison, kindly advise
Thanks!!

makavele:


For space & energy sakes . . a normal house standing fan would be an overkill . .
he could use a simple USB/DC fan mounted close to the controller . . kapish

I happen to use the 3rd one (first row) and it has been superb so far.

edit: you can cut off the USB end and extend the wires to your heart's desire.

duwdu:


"You got P.M." please, davodyguy.

........
P34c3
.....
...

abunafiu:
Make una folllow me analyse this. Fridge, iron join others.

People need to wise up not to fall into wrong hands.