抽屉单元装有可靠的机械联锁装置，只有在分断开关的状态下才能被打开，同时抽屉具有明显的合闸、试验、分断位置显示。
There is mechanical interlock for the drawer units, they can be opened only if the switch is at break-off state. The drawers have apparent position indication for close~ test and off.
仿真和试验结果显示，漏感能显著影响均衡电路工作模态，开关管电压，均衡电流等，需要在均衡电路实际设计时仔细考虑。
Simulations and experiments show that leakage inductor can affect the operation mode, switch voltage and equalization current, etc and should be consider carefully.
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