Main Application ：

■ Power system of the DC switch for communications

(a) Outdoor base station;

（b） Village base station with no air conditioner;

（c）Indoor macro base station in constrained space;

（d）DC indoor covered/distributed information source station;

（e）Solar photovoltaic base station in the area with no mains power or with third- and fourth-level electric power;

（f）AC WLAN site.

■ UPS AC power system for communications

（a）AC indoor covered/distributed station powered by alternating current;

（b）AC micro cell station;

（c）Data center powered by embedded UPS;

（d）AC WLAN site.

■ 240V/336V high voltage DC (HVDC) power system for communications（HVDC）

The HVDC system is a new-type power supply system applied in the communications machine room. The system uses auxiliary battery packs of two voltage levels, namely 240V and 336V, and the battery capacity generally is 50Ah–200Ah.