I'm considering getting a UPS for my house due to frequent voltage drops and no power 5sec-30min and electrical equipment doesn't like that kind of thing. Once there was 17 hours out due to a storm in 2 years. Ideally it should be 3-phase on input and output. Why 3-phase then it could be plugged in directly under the installation and output directly to the installation then it would serve the whole house. But the price is 2x more expensive than a 1-phase UPS. And probably easier to plug it in then 
For the whole house ordered power of 10kW only the induction hob uses 3 phases, the rest goes on 1 phase. I have the installations divided up for the lighting, individual floors in the house and the kitchen and dishwasher separately. So would it be possible to hook up the single-phase one somehow?
As for the power of the UPS I'm thinking about 10kVA, it should be able to pull the whole house without the induction hob. Of course, I would use it on battery power if there was no power, e.g. dishwasher, washing machine and iron.
I have a further query about when the power is out for a longer period of time, I would like to connect the aggregate to the installation and then charge the UPS slowly. I wonder if a 3.5kV 3-phase or single phase aggregate would be suitable for this and able to charge the UPS. Or would the UPS just not see power from it because the power is too low. I know that if I want to connect the genset to the installation I will have to buy a mains/aggregate switch and still preferably approach the power company and anger it to have a clear conscience.
From what I've found the smallest one is 10kVA and the price starts at 13,000s, although there are also the same ones for 28,000s. I assume that every company is a company and the device is not maintenance-free and the batteries need to be replaced from time to time. I have also seen on the internet used UPS from 3-7 thousand PLN. Is it worth to be interested in such a thing?
What ideas do you have to do this and protect your home from power failure?
For the whole house ordered power of 10kW only the induction hob uses 3 phases, the rest goes on 1 phase. I have the installations divided up for the lighting, individual floors in the house and the kitchen and dishwasher separately. So would it be possible to hook up the single-phase one somehow?
As for the power of the UPS I'm thinking about 10kVA, it should be able to pull the whole house without the induction hob. Of course, I would use it on battery power if there was no power, e.g. dishwasher, washing machine and iron.
I have a further query about when the power is out for a longer period of time, I would like to connect the aggregate to the installation and then charge the UPS slowly. I wonder if a 3.5kV 3-phase or single phase aggregate would be suitable for this and able to charge the UPS. Or would the UPS just not see power from it because the power is too low. I know that if I want to connect the genset to the installation I will have to buy a mains/aggregate switch and still preferably approach the power company and anger it to have a clear conscience.
From what I've found the smallest one is 10kVA and the price starts at 13,000s, although there are also the same ones for 28,000s. I assume that every company is a company and the device is not maintenance-free and the batteries need to be replaced from time to time. I have also seen on the internet used UPS from 3-7 thousand PLN. Is it worth to be interested in such a thing?
What ideas do you have to do this and protect your home from power failure?
