Check your terminology. Do you mean 3 phase (3 hot wires, a neutral wire, and a ground wire) power that would be used in a commercial building? If so, yes they are made. Most of the ones I've seen (I've only really looked on eBay) were large, expensive models designed so suppost an enormous load just long wnough for a generator to start. You can probably find ones designed for longer run times, though.
There has no 5-phase power supply available in the market.
Usually a SLA Battery (12 or 24 Volt) with Capacity depending on "up time" after loss of power and if it is an "online" or "offline" UPS. See Wikipedia
A uninterruptible power supply (UPS) is a system that will store a certain amount of power when you feed power into it while providing power to connected appliances. When it experiences a outage, it will provide power to the same appliances through its previously-stored power for a certain amount of time without much of a delay in switching power sources, thus the term.
If there is not enough power and the power trips, your appliances will lose power abruptly. This sudden loss of power can cause damage to sensitive electronics and appliances, particularly if the power surges when it returns. It is recommended to use surge protectors and Uninterruptible Power Supply (UPS) devices to protect your appliances in such situations.
variable dc supply are used to get desired amount of dc supply
infact i think the power supply be replaced with new one. infact i think the power supply be replaced with new one.
UPS = Uninterruptible Power Supply
You can't "calculate" it...
Uninterruptible Power Supply
An (UPS) Uninterruptible power supply
Uninterruptible Power Supply
UPS (uninterruptible power supply)
uninterruptible power supply
As long as the UPS has power. UPS's have different run times.
UPS (uninterruptible power supply)
the ups was invented by the great american christopher latthem
Uninterruptible supply
Give you time to shut down if you lose your power. Not a replacement for regular back-ups though.