the tube loss of main switch reduced and efficiency of module improved.
3. 先进的无源PFC技术: 更好地抑制高次谐波，功率因数可达0.92。
Advanced PFC technique: high-frequency harmonic can be restricted better, and power factor can be up to 0.92.
4. 先进的无级调流技术：可以根据负载电流或电池容量，无级调节限流值。 Advanced stepless modulating technique: it can steplessly modulate current limit values according to load current or battery’s capacitance.
5. 先进的民主均流电路：采用先进的专用均流芯片，在小电流下仍达到好的均流效果。
Advanced self-controlled current dividing circuit: with advanced current dividing chip, the current can be divided well even when it is very low.
6. 多级保护电路：输入级采用双臂逐个脉宽保护电路，输出双电流环双重保护，确保整个系统在异常情况下可靠保护。
Multi-protection circuit: output steps are composed of double-arm gradual pulse protection circuit, and with the double-protection of output current limit and over current, it can be ensured that the whole system is protected well under abnormal conditions.
7. 独立工作能力：模块在脱离监控的情况下，可以独立或并机正常工作。 Independent running ability: modules can run normally by itself or connected to other machines in parallel without being monitored
五、模块结构和功能Module Configuration and Functions
1．1 模块尺寸 Size of Module
1. 模块尺寸：460×270×148
Size of Module: 460×270×148
2. 前面板尺寸：310×180
Size of Front Panel: 310×180
1．2 前面板说明 Front Panel Instruction
1. 前面板如图一。