I have a 230v to 110v transformer which I use to power some equipment. I saw on the internet that some power transformers need a soft start circuit. The power of my transformer is 200VA. On the internet is specified that only transformers with a power over 300VA require a soft start circuit. I also read on the internet that if I connect the transformer to 230v there is a high current which goes through the primary winding for a short period of time.
My questions are: Do I need a soft start for my 200va transformer?
What happens if I connect some equipment (for example a soldering station or an oscilloscope) to the secondary of the 200va and after that I connect the transformer to 230v?
Is possible to appear in the secondary a voltage bigger than 110v which can damage my equipment?