保定防爆电动葫芦厂

1、分接：为了适合电网的运行需要，变压器高压侧一般都有抽头，分接开关的同步切换不能够完全保证，所以不能够有载调压变压器并联运行。

1, sub connection: in order to meet the needs of power grid operation, there are usually taps on the high voltage side of the transformer, and the synchronous switching of tap changers cannot be fully guaranteed, so there is no parallel operation of the on load tap changer.

2、防爆电动葫芦的电压互感器一次绕组匝数N1多，二次绕组匝数N2少，相当于是一个降压变压器。于PT在工作时一次绕组和二次绕组都是分别并联在一次回路和二次控制回路电压线圈的。所以如果二次绕组短路，则将会导致非常大的二次侧电流。

2. The voltage transformer of the explosion proof electric hoist is more than N1, and the number of the two winding turns is less than N2, so it is equivalent to a step-down transformer. The one and two windings of PT are parallel to the primary and two control loop voltage coils at work. So if the two winding is short circuited, it will lead to a very large two side current.

3、手车/抽屉：手车和抽屉分别是高压开关柜和低压开关柜的一部分，分别安装高压断路器和低压断路器及其继电器等元器件。他们与固定式开关柜的功能是基本相同的，主要区别是方便了防爆电动葫芦的维护和检修。

3, handcart / drawer: hand cart and drawer are part of high voltage switchgear and low voltage switchgear respectively. They are equipped with high voltage circuit breakers, low voltage circuit breakers and their relays. They are basically the same as the fixed switch cabinet, the main difference is that it is convenient for the maintenance and maintenance of the explosion-proof electric hoist.