inverter special for electric communication (ouyad)

it is an available input and output insulate transformer;
it protects against short circuit and overload;
it can input DC220V ,and it can be able to use DC power special for electric;
it is an available 3U shelf;
the capacity range is from 700VA tp 5000VA;
the input voltage range is from 175VAC to 265VAC;
the DC voltage is 220V;
the input frequency range is from 47.5HZ to 52.5HZ;
the output voltage range is from 215.6V to 224.4V;
the output frenquency is 50HZ;
the transfer time is no more than 4ms.