... Switching DC Power Supply System The capacity of GTDW high frequency switching DC power supply system includes 38AH ~ 1500AH ... . In addition, Guotong also undertake DC power system of specific capacity and voltage. The products are mainly used in ... tele-control, tele-regulation and unattended operation in power system ClassificationAccording to system capacity: 38AH, 50AH, 65AH, 100AH, 120AH, 150AH, ...