to prevent direct heat from Sunlight, dust or bee, warp nest.

most string inverter got fan to remove heat created when converting DC to AC.

I not sure how high heat do our rooftop can go when running the Microinverter.
but what they tested is 85C for 1h and ram down to -40C for 200 cycles

our environment is can be 6 to 8 hours of constant heat. plus how hot is the inverter at the roof top combine with solar panel heat and DC to AC conversion heat add up together.
maybe need someone to use thermal imaging to check it.

200 cycle = 200 hours of test.
ours if let say 10 years and average 6h of extremely hot.

= 365 * 10 * 6 = 36.5k hours

not slight, is kind noisy when peak.

i installed inside my study room.... kind annoying but too late to change.

the inverter will enjoy aircon when i at my studying during noon, lol

operating temp excluding environment temp.

most testing is in the lab and not real condition specially in Malaysia,
humid and hot.


dry and hot is very different with humid and hot.


not sure the use MTBF/MTTF or ALT to predict 25 years.

hopefully is ALT which much higher temp, if MTBF, then good luck.

another point, better to check with the manufacturer is it the device can work with 65C for 25 years, get their MTBF and ALT result for 65C if they been tested at that level.
cause i work in similar industrial, the normal product life is in control temperate aka 25C and not the max temperature. Most manufacturer will not test on the max temperature as it will fail badly.




i never measure before, so i Ai asked some info,

Below from AI Grok


This post has been edited by angelgemini: Aug 18 2025, 05:03 PM

An IP68 rating means a device is both dust-tight and waterproof. Specifically, the "6" in IP68 signifies complete protection against dust ingress, while the "8" indicates that the device can withstand submersion in water deeper than 1 meter for a specified duration (often 30 minutes or more).

on the roof top 24/7 exposed + the heat in Malaysia.
better finger cross.

they just give 25 years,
they will 101 reason to void the warranty specially on the water side,
cause IP68 is not guarantee water cannot go in.
and no warranty on water protection.
the company also dunno still around after 10 to 15 years

mostly likely the company is around, but if they are the largest then should be ok.

risk to close down is lower

more of if the mirco inverter company close shop, then gg.

cause PG will not able to honor the micro inverter or even hosting the software.

just imagine the micro inverter software not accessible anymore.

it happen once in USA, which the company need to 100% change all the micro inverter for the client by own cost as the manufacturer kena buy over by another company.

if

is all about risk management and what is the option if that happen.

some like to plan ahead and do risk management,

so just tak apa, when time come only care about it.

the discussion is to for risk management and what to expected if shit hit the fan.

nope, do own assessment to determine which to buy.

study the risk,

anyone know they using EOB or Load Profile/Survey for TOU calculation?

Huawei launch Solar Fusion 9.0
AI integrated with battery

Below is from Gemini 3.0

The statement you provided contains several factual inaccuracies. While there is a grain of truth regarding Malaysia's tariff structure, the claims about Sigenergy being "older" and Huawei "copying" them are incorrect.

Here is the breakdown of what is accurate and what is not:

1. Claim: "Huawei is copying Sigenergy... Sigenergy has been selling longer."
Verdict: FALSE.
Huawei is the veteran: Huawei entered the global solar inverter market around 2013 and became the global market leader by volume shortly after. They have been selling residential solar solutions for over a decade.
Sigenergy is the newcomer: Sigenergy was founded in 2022—very recently.
The Connection: The founder of Sigenergy, Tony Xu, was actually the former President of Huawei's Smart PV Business.
This explains why the features look similar. It is not that Huawei copied a startup; rather, the person who helped build Huawei's solar division left to start Sigenergy, bringing similar design philosophies and industry knowledge with him.

2. Claim: "Huawei FusionSolar AI is useless in Malaysia because we don't have different rates."
Verdict: PARTIALLY TRUE, BUT MOSTLY MISLEADING.
It is true that Malaysia does not yet have mandatory, fluctuating "spot prices" like the UK or Australia, but the AI is not useless. Here is why:

Scenario A: Standard Tiered Tariff (Most Malaysians)
Malaysia uses a Tiered Tariff (the more you use, the expensive it gets).
How AI helps: The AI (Huawei's EMMA or Sigenergy's MYOS) doesn't just look for "cheap hours." It looks to maximize self-consumption.[1] It ensures you use your own solar power (free) to avoid buying electricity from TNB when you hit the expensive "Tier 2" or "Tier 3" usage blocks (where rates jump from ~21 sen to ~57 sen).
Result: It stops you from importing grid electricity unnecessarily, which saves money even without Time-of-Use rates.

Scenario B: Time-of-Use (TOU) Tariff (Optional)[1][2][3]
TNB does offer a "Time of Use" (TOU) tariff scheme for residential users with smart meters (Prime vs. Off-Peak rates).[1]
If you opt into this, the AI becomes extremely valuable by charging your battery at night (cheap rate) and discharging it during the day/evening (expensive rate).

3. Claim: "They are just copying Sigenergy features."
Verdict: INCORRECT.
Huawei has had "AI" features in their inverters (like Arc Fault Circuit Interrupters and IV Curve Diagnosis) for years before Sigenergy existed.
However, Sigenergy did launch a very aggressive "5-in-1" integrated system (inverter + battery + EV charger in one stack) that looked different from Huawei's separate "Luna battery + Inverter" setup.
Huawei's recent updates (EMMA assistant) are a response to the market evolving, but given their size and R&D budget, they have been developing these algorithms for a long time.
Summary for your decision:
Don't buy Sigenergy because you think they are "older" or "more established." They are a very new startup (though with an experienced founder).
Don't dismiss the AI in Malaysia. Even with standard TNB bills, "Smart Energy Management" helps you avoid the expensive >600kWh tariff block.

Comparison:
Huawei: Proven reliability, huge support network in Malaysia, long warranty track record.
Sigenergy: Innovative "All-in-One" design (easier to install), very smart software, but a much newer company with less long-term history to prove warranty support 10 years down the line.



Sources
help
efsrevision.com
solaroo.com
getsolar.ai
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This post has been edited by angelgemini: Yesterday, 10:34 AM

is not for normal home use,
more for factory, and large scale solar farm,

maybe bungalow need it also, hahahaa
running own data center inside house,