ZTE Power Supply OLT Network Power Rectifier Converter supply ZTE PSU-AC 15A Product Description ZTE PSU-AC 30A AC to DC 220V to 48V Rectifier Converter supply in cabinet for ZTE & HUAWEI OLT. The EPS30-4815AF power system converts one AC input into two DC outputs to implement the DC power distribution. It can be connected to one set of batteries and use its monitoring module to manage the batteries.