Static Voltage Stabilizer (IGBT Controlled)

It would probably last longer in a conditioned space....by ambient do you mean max temp..? This would be located in a protected environment anyway, it wouldn't take much cooling to keep it within operating parameters...

http://tcielectropower.com/IGBT-based-PWM-static-voltage-stabilizers

Cooling is provided by ventilation. Air conditioning provides comfort control.

Semiconductor devices generate lots of heat during operation and some, like vfd, are required to be kept in air conditioned room of 26 degrees Celsius. Otherwise they keep generating alarm and fault due to high heat sink temperature. In cooler countries that may not be a problem. But in tropical countries, it is a big problem i think.

I just wanted to know whether the same is required in case of an Static stabilizer.

So, is there a prize for the right answer?

You really got a sense of humor. Keep it up.

Most manufacturing plants are cooled for the sake of the machinery,not the workers,unless you live in Antarctica.The comfort of the workers is secondary as long as it meets OSHA rules here in the US.In some other countries,no rules apply.

Cooler is better for all electronics,so 45C is within factory specs,but the life expectancy will be increased with a lower temperature.

Unless it is specifically required by the manufacturer then no, however it is all about cost and risk. Additional cooling may be an additional expense but will generally positively effect the life of the unit (especially if it includes capacitors or other temperature sensitive devices).

Also, how much heat does the unit produce because in a closed environment like an uncooled sealed room the temperature could easily exceed the ambient temperature limits making room cooling mandatory.

With anything electronic, heat x time = failure. So if you run something at temperatures close to the maximum it is rated for, the shorter it’s working life will be. You have to weigh the costs vs benefits involved. If you only need it to last for a short time, I would risk it. If you want to avoid replacing it in a few years, I would cool it.

Is humidity a factor in ambient conditions? If it is, air conditioning should help in longer runs. Cost of operation of HVAC v/s cost of reduced lifecycle.